SFI SYSTEM, Diagnostic DTC:P1603, P1605
| DTC Code | DTC Name |
|---|---|
| P1603 | Engine Stall History |
| P1605 | Rough Idling |
DESCRIPTION
- P1603 (for CVT models)
After starting the engine, this DTC is stored when the engine stops without the ignition switch being operated.
Using the GTS, the conditions present when the DTC was stored can be confirmed by referring to the freeze frame data. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
It is necessary to check if the vehicle has run out of fuel before performing troubleshooting, as this DTC is also stored when the engine stalls due to running out of fuel.
- P1605
This DTC is stored if the engine speed drops below the set speed.
Using the GTS, the conditions present when the DTC was stored can be confirmed by referring to the freeze frame data. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
It is necessary to check if the vehicle ran out of fuel before performing troubleshooting, as this DTC is also stored when idling is unstable due to running out of fuel.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory |
|---|---|---|---|---|---|
| P1603 | Engine Stall History | After monitoring for startability problems (P1604) finishes and 5 seconds or more elapse after starting the engine, with the engine running, the engine stops (the engine speed drops to 200 rpm or less) without the ignition switch being operated for 0.5 seconds or more (1 trip detection logic). |
|
Does not come on | DTC stored |
| P1605 | Rough Idling | After 5 seconds or more elapse after starting the engine, with the engine running, the engine speed drops to 400 rpm or less (1 trip detection logic). |
|
Does not come on | DTC stored |
*: for CVT models
WIRING DIAGRAM
Refer to DTC P0010 for the camshaft timing oil control valve (for intake camshaft) circuit.
Refer to DTC P0013 for the camshaft timing oil control valve (for exhaust camshaft) circuit.
Refer to DTC P0102 for the mass air flow meter sub-assembly circuit.
Refer to DTC P0115 for the engine coolant temperature sensor circuit.
Refer to DTC P0136 for the air fuel ratio sensor circuit.
Refer to DTC P0351 for the ignition coil assembly circuit.
Refer to DTC P0443 for the purge VSV circuit.
Refer to Fuel Injector Circuit.
CAUTION / NOTICE / HINT
Tech Tips
-
In contrast to normal malfunction diagnosis for components, circuits and systems, DTCs P1603 and P1605 are used to determine the malfunctioning area from the problem symptoms and freeze frame data when the user mentions problems such as engine stall.
As these DTCs can be stored as a result of certain user actions, even if these DTCs are output, if the customer makes no mention of problems, clear these DTCs without performing any troubleshooting and return the vehicle to the customer.
-
If any other DTCs are output, perform troubleshooting for those DTCs first.
-
Use any information from the customer problem analysis about the condition of the vehicle at the time when the problem occurred (how the engine stopped, conditions when the engine was restarted, etc.) as a reference.
Symptom Suspected Area Engine vibration occurs and engine stops Air fuel ratio abnormal Engine stops with no engine vibration Ignition system, injection stoppage, high load from external parts Engine can be started with accelerator pedal depressed Insufficient air volume Rough idling after engine started Air fuel ratio abnormal, abnormal combustion -
Read freeze frame data using the GTS. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
-
When confirming the freeze frame data, be sure to check all 5 sets of freeze frame data.
-
When DTC P1603 (Engine Stall History) is stored, DTC P1605 (Rough Idling) is also stored. When confirming freeze frame data, check DTC P1605. The ECM stores DTC P1605 first. Therefore, 5 sets of freeze frame data can be confirmed through DTC P1605, enabling the technician to obtain more information.
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When confirming freeze frame data, if there are multiple items related to the cause of the malfunction, perform troubleshooting for all related items.
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Try to operate the vehicle under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and the data when the engine is idling (engine warmed up, no load, and shift lever in D or N (neutral)) and compare these data with the freeze frame data.
-
Inspections take into account the fact that the malfunction may not have reoccurred and place emphasis on checking the vehicle conditions present at the time when the malfunction occurred.
-
When performing inspections, jiggle the relevant wire harnesses and connectors in an attempt to reproduce malfunctions that do not always occur.
| Inspection flow |
|---|
| Using freeze frame data, narrow down the parts to be inspected according to the vehicle conditions at the time when the malfunction occurred. |
- P1603:
-
If the engine stalled when the intake air volume was low (during idling or deceleration), there may be a decrease in torque due to an incorrect air fuel ratio, etc.
-
If the engine stalled when the intake air volume was high (during driving or acceleration), there may be a major malfunction such as continuous misfire due to ignition stoppage, fuel injection stoppage, etc. and the torque drops to zero.
1:
-
If the engine speed decreased slowly, there may have been a decrease in torque due to an air fuel ratio that was incorrect (by approximately 20 to 30%), etc.
-
If the engine speed decreased rapidly, there may have been a malfunction such as when the engine misfires almost continuously due to ignition stoppage, fuel injection stoppage, etc., or when the external load increases due to an external part malfunctioning.
2:
-
If the air fuel ratio is abnormal, there may have been an intake air leak, sensor malfunction, or fuel supply problem.
-
If the vehicle was normal, the air volume may have been insufficient or the ignition timing may have been incorrect.
3:
P1603 inspection flow: Narrow down the parts to be inspected according to the vehicle conditions at the time when the malfunction occurred (freeze frame data).
| Vehicle State | Engine Speed | Suspected Area | Primary Parts to Inspect | Procedure | |
|---|---|---|---|---|---|
| Idling or decelerating | Slowly decreases and engine stalls | Ignition system abnormal | Igniter abnormal |
|
10, 38, 53 |
| Air fuel ratio abnormal | Air suction |
|
5 to 9 | ||
| Sensor malfunction (value from sensor too lean) |
|
11 to 23 | |||
| Sensor malfunction (value from sensor too rich) | 39 to 51 | ||||
| Fuel supply problem |
|
24 to 37 | |||
| Intake air volume insufficient | Problem with air passage |
|
54 to 56 | ||
| Excessive valve overlap |
|
57 to 60 | |||
| Ignition timing incorrect | Does not operate as expected |
|
61 to 65 | ||
| Rapidly decreases and engine stalls | Ignition and injection stops (electrical system malfunction) | Power temporarily cut |
|
66, 67 | |
| External part malfunctioning | Increase in load |
|
68 to 71 | ||
| Accelerating | - | Crankshaft position sensor or camshaft position sensor malfunction | Power temporarily cut |
|
1 |
| Mass air flow meter | Foreign matter adhesion |
|
72 to 75 | ||
| Ignition and injection stops (electrical system malfunction) | Power temporarily cut |
|
76, 77 | ||
| Fuel supply problem | Fuel leak, clog |
|
78 to 82 | ||
- P1605:
-
If the engine speed decreased slowly, there may have been a decrease in torque due to an air fuel ratio that was incorrect (by approximately 20 to 30%), etc.
-
If the engine speed decreased rapidly, there may have been a malfunction such as when the engine misfires almost continuously due to ignition stoppage, fuel injection stoppage, etc., or when the external load increases due to an external part malfunctioning.
1:
-
If the air fuel ratio is abnormal, there may have been an intake air leak, sensor malfunction, or fuel supply problem.
-
If the vehicle was normal, the air volume may have been insufficient or the ignition timing may have been incorrect.
2:
P1605 inspection flow: Narrow down the parts to be inspected according to the vehicle conditions at the time when the malfunction occurred (freeze frame data).
| Engine Speed | Suspected Area | Primary Parts to Inspect | Procedure | |
|---|---|---|---|---|
| Slowly decreases | Ignition system abnormal | Igniter abnormal |
|
10, 38, 53 |
| Air fuel ratio abnormal | Air suction |
|
5 to 9 | |
| Sensor malfunction (value from sensor too lean) |
|
11 to 23 | ||
| Sensor malfunction (value from sensor too rich) | 39 to 51 | |||
| Fuel supply problem |
|
24 to 37 | ||
| Intake air volume insufficient | Problem with air passage |
|
54 to 56 | |
| Excessive valve overlap |
|
57 to 60 | ||
| Ignition timing incorrect | Does not operate as expected |
|
61 to 65 | |
| Rapidly decreases | Ignition and injection stops (electrical system malfunction) | Power temporarily cut |
|
66, 67 |
| External part malfunctioning | Increase in load |
|
68 to 71 | |
*1: for CVT models
Note
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
-
CHECK FOR ANY OTHER DTCS OUTPUT
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Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
-
Read the DTCs.
Powertrain > Engine and ECT > Trouble CodesResult Result Proceed to Only DTC P1603 and/or P1605 is output A DTCs other than P1603 and/or P1605 are output B Tech Tips
If any DTCs other than P1603 or P1605 are output, troubleshoot those DTCs first.
B 
GO TO DTC CHART Click here
A 
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-
READ FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
OK Immobiliser Fuel Cut is OFF. Result Result Proceed to Abnormal A Normal B
B 
GO TO STEP 4 Click here
A
-
-
CHECK IMMOBILISER SYSTEM
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Connect the GTS to the DLC3.
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Start the engine.
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Idle the engine.
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Turn the GTS on.
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Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Immobiliser Communication and Immobiliser Fuel Cut.
Powertrain > Engine and ECT > Data ListTester Display Immobiliser Communication Immobiliser Fuel Cut -
Check the Data List indication.
OK Data List Item GTS Display Immobiliser Communication ON Immobiliser Fuel Cut OFF Result Result Proceed to OK A NG (w/ entry and start system) B NG (w/o entry and start system) C
B
CHECK IMMOBILISER SYSTEM Click here
C
CHECK IMMOBILISER SYSTEM Click here
A
-
-
READ FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
Result Problem Symptom Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to Closed Throttle Position SW Engine Speed Total of Short FT #1 and Long FT #1 When idling or decelerating, engine speed slowly decreases and engine stalls All 5 sets of freeze frame data are ON Decreases slowly*1 All 5 sets of freeze frame data are 15% or more*2
-
Air suction
-
Sensor malfunction (value from sensor too lean)
-
Fuel supply problem
A At least 1 of the 5 sets of freeze frame data is -15% or less*3 Sensor malfunction (value from sensor too rich) B All 5 sets of freeze frame data are from -15% to 15%
-
Intake air volume insufficient
-
Ignition timing incorrect
C When idling or decelerating, engine speed rapidly decreases and engine stalls Decreases rapidly*1 -
-
Injection stoppage, ignition stoppage
-
Load from external parts
D When accelerating or driving at constant speed and engine stalls*4 At least one is OFF - -
-
Sensor malfunction
-
Injection stoppage, ignition stoppage
-
Fuel supply problem
E 
Tech Tips
-
*1: A rapid decrease in engine speed may have been caused by an electrical malfunction in the shared wiring of all or multiple cylinders, an increase in load from external parts, etc. The engine speed is considered to have decreased rapidly if either of the following conditions applies.
Otherwise, the engine speed is considered to have decreased slowly.
(a) In the freeze frame data, the decrease in engine speed from #3 to #5 is 400 rpm or higher.
(b) In the freeze frame data, the engine speed at #5 is 120 rpm or less.
-
If the vehicle speed is 5 km/h (3 mph) or less and the difference between the Engine Speed and SPD (NT) is 100 rpm or less, inspect the CVT. (Depending on the rate of vehicle deceleration, the engine speed may have decreased due to the CVT lock-up release being late.) (for CVT models)
-
*2: When a DTC is stored, feedback compensation increases because the air fuel ratio is determined to be lean.
-
*3: When a DTC is stored, feedback compensation decreases because the air fuel ratio is determined to be rich.
-
*4: This item should be checked when DTC P1603 is output and is not necessary to check when only P1605 is output.
-
B
CHECK IGNITION SYSTEM Click here
C
CHECK IGNITION SYSTEM Click here
D
CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY) Click here
E
CHECK FREEZE FRAME DATA Click here
A
-
-
CHECK INTAKE SYSTEM
-
Check for air leakage in the intake system [vacuum hose disconnection, cracks, damaged gaskets, etc.].
Tech Tips
-
If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake pipes increases and the air suction noise becomes louder.
-
If Short FT #1 and Long FT #1 are largely different from the normal values when idling (the intake air volume is small) and almost the same as the normal values when racing the engine (the intake air volume is high), air leakage may be present.
OK There is no air suction. Tech Tips
Perform "Inspection After Repair" after repairing or replacing the intake system.
Result Proceed to OK NG -
NG
REPAIR OR REPLACE INTAKE SYSTEM
OK
-
-
CHECK PURGE VSV
-
*1 Purge VSV *2 Fuel Vapor Feed Hose (to Canister) *3 Connector Disconnect the fuel vapor feed hose (on the canister side) of the purge VSV.
-
Start the engine.
-
Idle the engine.
-
Disconnect the connector of the purge VSV.
-
Check if air flows through the purge VSV.
OK Air does not flow. Tech Tips
When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear the DTC.
Result Proceed to OK NG
NG
REPLACE PURGE VSV Click here
OK
-
-
READ FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Stop Light Switch At least 1 of the 5 sets of freeze frame data is ON Air suction from brake booster assembly A All 5 sets of freeze frame data are OFF - B
B
GO TO STEP 10 Click here
A
-
-
READ VALUE USING GTS (SHORT FT #1)
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Start the engine and warm it up until the engine coolant temperature stabilizes.
Tech Tips
The A/C switch and all accessory switches should be off.
-
Idle the engine.
-
Using the GTS, read the value of Short FT #1 in the Data List while depressing the brake pedal.
Powertrain > Engine and ECT > Data ListTester Display Short FT #1 Standard Short FT #1 changes by 10% or less. Result Result Proceed to OK A NG (for LHD) B NG (for RHD) C Tech Tips
When air leakage from the brake booster assembly is present, the feedback compensation increases because the air fuel ratio becomes lean.
B
INSPECT BRAKE BOOSTER ASSEMBLY Click here
C
INSPECT BRAKE BOOSTER ASSEMBLY Click here
A
-
-
PERFORM DRIVE TEST
-
Connect the GTS to the DLC3.
-
Start the engine and warm it up until the engine coolant temperature stabilizes.
Tech Tips
The A/C switch and all accessory switches should be off.
-
Idle the engine.
-
Turn the GTS on.
-
Using the GTS, read the value of Short FT #1 and Long FT #1 in the Data List.
Powertrain > Engine and ECT > Data ListTester Display Short FT #1 Long FT #1 Standard Data List Condition Specified Condition Short FT #1 + Long FT #1 The conditions of the vehicle are matched to those present when the problem occurs -15 to 15% Result Result Proceed to OK A NG (for LHD) B NG (for RHD) C
B
INSPECT BRAKE BOOSTER ASSEMBLY Click here
C
INSPECT BRAKE BOOSTER ASSEMBLY Click here
A
-
-
CHECK IGNITION SYSTEM
-
Perform ignition system On-vehicle Inspection
Tech Tips
Perform "Inspection After Repair" after repairing or replacing the ignition system.
Result Proceed to OK NG
NG
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
OK
-
-
READ FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Calculate Load Below 90% of the current value of the vehicle*1 Mass air flow meter sub-assembly A AFS Voltage B1S1 3.3 V or higher*2
-
Air fuel ratio sensor
-
Wire harness or connector
B Tech Tips
-
*1: If the mass air flow meter sub-assembly is malfunctioning and incorrectly measures the intake air volume to be less than the actual volume, the freeze frame data will show a low engine load value.
-
*2: If the air fuel ratio sensor is malfunctioning and constantly outputs a value indicating the air fuel ratio is lean, the actual air fuel ratio will become rich and the engine may stall.
-
B
PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION VOLUME FOR A/F SENSOR) Click here
A
-
-
CHECK MASS AIR FLOW METER SUB-ASSEMBLY
-
Remove the mass air flow meter sub-assembly.
-
Check for foreign matter in the air flow passage of the mass air flow meter sub-assembly.
Result Result Proceed to Visible foreign matter is not present A Visible foreign matter is present B Tech Tips
Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.
B
REPLACE MASS AIR FLOW METER SUB-ASSEMBLY Click here
A
-
-
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM)
-
Check the harnesses and connectors, referring to DTC P0102 inspection procedure.
Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
Make sure there is not an excessive amount of force applied to the wire harness.
Result Proceed to OK NG -
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
-
-
PERFORM DRIVE TEST
-
Connect the GTS to the DLC3.
-
Start the engine and warm it up until the engine coolant temperature stabilizes.
Tech Tips
The A/C switch and all accessory switches should be off.
-
Idle the engine.
-
Turn the GTS on.
-
Using the GTS, read the value of Calculate Load in the Data List.
Powertrain > Engine and ECT > Data ListTester Display Calculate Load Standard Data List Specified Condition Calculate Load 90 to 110% of the current value of the vehicle Result Result Proceed to Abnormal A Normal B Tech Tips
Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.
A
REPLACE MASS AIR FLOW METER SUB-ASSEMBLY Click here
B
GO TO STEP 18 Click here
-
-
PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)
-
Connect the GTS to the DLC3.
-
Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes.
Tech Tips
The A/C switch and all accessory switches should be off.
-
Idle the engine.
-
Turn the GTS on.
-
Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / All Data / AFS Voltage B1S1.
Powertrain > Engine and ECT > Active TestActive Test Display Control the Injection Volume for A/F Sensor Data List Display AFS Voltage B1S1 -
Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume.
Standard GTS Display Specified Condition Control the Injection Volume for A/F Sensor (12.5%) Air fuel ratio sensor output voltage is below 3.1 V Control the Injection Volume for A/F Sensor (-12.5%) Air fuel ratio sensor output voltage is higher than 3.4 V Result Result Proceed to Abnormal A Normal B Tech Tips
The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.
B
GO TO STEP 18 Click here
A
-
-
CHECK TERMINAL VOLTAGE (POWER SOURCE OF AIR FUEL RATIO SENSOR)
-
Check the harnesses and connectors, referring to DTC P0031 inspection procedure.
Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
Make sure there is not an excessive amount of force applied to the wire harness.
Result Proceed to OK NG -
NG
REPAIR AIR FUEL RATIO SENSOR POWER SOURCE CIRCUIT Click here
OK
-
-
CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM)
-
Check the harnesses and connectors, referring to DTC P2237 inspection procedure.
Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
Make sure there is not an excessive amount of force applied to the wire harness.
Result Proceed to OK NG -
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
-
-
READ FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
Result Freeze Frame Data Item for DTC P1605 Result Proceed to Initial Engine Coolant Temp, Ambient Temp for A/C, Initial Intake Air Temp Difference in temperature between each item is less than 10°C (18°F)*1 A Difference in temperature between each item is 10°C (18°F) or higher*2 B Tech Tips
-
*1: A long time had elapsed after stopping the engine.
-
*2: A long time had not elapsed after stopping the engine.
-
B
READ FREEZE FRAME DATA Click here
A
-
-
READ FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
*1 Engine Coolant Temperature Increase after Engine Start (Engine Coolant Temperature - Engine Coolant Temperature at Engine Start) *2 (Minutes) *3 Time Elapsed after Engine Start Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Initial Engine Coolant Temp, Coolant Temp, Engine Run Time Range A
-
Engine coolant temperature sensor
-
Thermostat
A Range B Engine coolant temperature sensor B Range C - C Tech Tips
This step is not directly related to engine stall.
-
B
GO TO STEP 22 Click here
C
GO TO STEP 24 Click here
A
-
-
INSPECT THERMOSTAT
-
Inspect the thermostat.
Result Result Proceed to Abnormal A Normal B
A
REPLACE THERMOSTAT Click here
B
GO TO STEP 22 Click here
-
-
READ FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Coolant Temp 120°C (248°F) or higher Engine coolant temperature sensor A Engine coolant temperature is lower than ambient temperature* by 15°C (27°F) or higher Engine coolant temperature sensor Values are other than above - B Tech Tips
*: Use an actual ambient temperature estimated from the Initial Intake Air, Ambient Temp for A/C, and (if possible) the weather when the DTC was detected.
B
GO TO STEP 24 Click here
A
-
-
INSPECT ENGINE COOLANT TEMPERATURE SENSOR
-
Inspect the engine coolant temperature sensor.
Result Result Proceed to Normal A Abnormal B Tech Tips
Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.
B
REPLACE ENGINE COOLANT TEMPERATURE SENSOR Click here
A
-
-
CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)
-
Disconnect the engine coolant temperature sensor connector.
-
Disconnect the ECM connector.
-
Measure the resistance according to the value(s) in the table below.
Standard Resistance Tester Connection Condition Specified Condition B3-2 - B31-93 (THW) Always Below 1 Ω B3-1 - B31-94 (ETHW) Always Below 1 Ω B3-2 or B31-93 (THW) - Body ground Always 10 kΩ or higher Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
Make sure there is not an excessive amount of force applied to the wire harness.
Result Proceed to OK NG -
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
-
-
READ FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to EVAP (Purge) VSV At least 1 of the 5 sets of freeze frame data is not 0% Purge VSV A All 5 sets of freeze frame data are 0% - B Tech Tips
If the purge VSV is stuck closed, air fuel ratio compensation by the purge VSV is incorrectly adjusted, and then the air fuel ratio becomes lean and the engine may stall.
B
PERFORM ACTIVE TEST USING GTS (CONTROL THE FUEL PUMP / SPEED) Click here
A
-
-
PERFORM ACTIVE TEST USING GTS (ACTIVATE THE VSV FOR EVAP CONTROL)
-
*1 Purge VSV *2 Fuel Vapor Feed Hose (to Canister) Disconnect the fuel vapor feed hose (on the canister side) of the purge VSV.
-
Connect the GTS to the DLC3.
-
Start the engine.
-
Turn the GTS on.
-
Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Evap Control.
Powertrain > Engine and ECT > Active TestTester Display Activate the VSV for Evap Control -
When purge VSV is operated using the GTS, check whether the port of the purge VSV applies suction your finger.
OK GTS Operation Specified Condition ON Purge VSV port applies suction to finger OFF Purge VSV port applies no suction to finger Result Result Proceed to Abnormal A Normal B Tech Tips
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
B
GO TO STEP 33 Click here
A
-
-
INSPECT PURGE VSV
-
Inspect the purge VSV.
Result Proceed to OK NG
NG
REPLACE PURGE VSV Click here
OK
-
-
CHECK TERMINAL VOLTAGE (POWER SOURCE OF PURGE VSV)
-
Check the harness and connectors, referring to DTC P0443 inspection procedure.
Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
Make sure there is not an excessive amount of force applied to the wire harness.
Result Proceed to OK NG -
NG
REPAIR PURGE VSV POWER SOURCE CIRCUIT Click here
OK
-
-
CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)
-
Check the harness and connectors, referring to DTC P0443 inspection procedure.
Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
Make sure there is not an excessive amount of force applied to the wire harness.
Result Proceed to OK NG -
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
-
-
CLEAR DTC
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Clear the DTCs.
Powertrain > Engine and ECT > Clear DTCsResult Proceed to NEXT
NEXT
-
-
READ VALUE USING GTS (EVAP (PURGE) VSV)
-
Connect the GTS to the DLC3.
-
Start the engine and warm it up until the engine coolant temperature stabilizes.
Tech Tips
The A/C switch and all accessory switches should be off.
-
Idle the engine for 15 minutes or more.
-
Turn the GTS on.
-
Using the GTS, read the value of EVAP (Purge) VSV in the Data List.
Powertrain > Engine and ECT > Data ListTester Display EVAP (Purge) VSV Standard Data List Specified Condition EVAP (Purge) VSV Value other than 0% is displayed Result Result Proceed to Abnormal A Normal B
B
CHECK FOR INTERMITTENT PROBLEMS Click here
A
-
-
PERFORM ACTIVE TEST USING GTS (ACTIVATE THE VSV FOR EVAP CONTROL)
-
*1 Purge VSV *2 Fuel Vapor Feed Hose (to Canister) Disconnect the fuel vapor feed hose (on the canister side) of the purge VSV.
-
Connect the GTS to the DLC3.
-
Start the engine.
-
Turn the GTS on.
-
Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Evap Control.
Powertrain > Engine and ECT > Active TestTester Display Activate the VSV for Evap Control -
When purge VSV is operated using the GTS, check whether the port of the purge VSV applies suction your finger.
OK GTS Operation Specified Condition ON Purge VSV port applies suction to finger OFF Purge VSV port applies no suction to finger Result Result Proceed to Abnormal A Normal B Tech Tips
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
B
CHECK FOR INTERMITTENT PROBLEMS Click here
A
-
-
CHECK CONNECTOR CONNECTION CONDITION (ECM)
-
Check the ECM connector connection condition.
Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
Make sure there is not an excessive amount of force applied to the wire harness.
Result Proceed to OK NG -
OK
REPLACE ECM Click here
NG
RECONNECT CONNECTOR CORRECTLY
-
-
PERFORM ACTIVE TEST USING GTS (CONTROL THE FUEL PUMP / SPEED)
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.
Powertrain > Engine and ECT > Active TestTester Display Control the Fuel Pump / Speed -
Check whether the fuel pump operating sound occurs when performing the Active Test on the GTS.
OK GTS Operation Specified Condition ON Operating sound heard OFF Operating sound not heard Result Result Proceed to Abnormal A Normal B Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
While performing the Active Test, make sure that there is no fuel leakage from the pipes, no signs that fuel has leaked, and no fuel smell.
-
If the fuel pump operating noise is abnormal, proceed to step 34.
-
B
CHECK FUEL SYSTEM Click here
A
-
-
INSPECT FUEL PUMP
-
Inspect the fuel pump.
Result Proceed to OK NG
OK
CHECK FUEL PUMP CONTROL CIRCUIT Click here
NG
REPLACE FUEL PUMP Click here
-
-
CHECK FUEL SYSTEM
-
Check the fuel system.
-
Check the fuel pump operation.
-
Check the fuel leaks.
-
Check the fuel pressure.
-
Perform the Active Test [Control the All Cylinders Fuel Cut].
Result Result Proceed to Abnormal A Normal B -
B
CHECK FOR INTERMITTENT PROBLEMS Click here
A
-
-
CHECK FUEL SYSTEM
-
Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter and inside the fuel tank), and for signs that the fuel pump was stuck.
Result Result Proceed to There is no foreign matter and no signs that fuel pump was stuck A There is foreign matter or signs that fuel pump was stuck B Tech Tips
If there is foreign matter such as iron particles on the fuel pump, fuel filter or fuel tank, remove the foreign matter.
B
REPAIR OR REPLACE FUEL SYSTEM
A
-
-
CHECK FUEL SYSTEM
-
Check the fuel system.
-
Check the fuel pump operation.
-
Check the fuel leaks.
-
Check the fuel pressure.
-
Perform the Active Test [Control the All Cylinders Fuel Cut].
Tech Tips
-
For the fuel system On-vehicle Inspection, refer to the following procedures.
-
Perform "Inspection After Repair" after replacing the fuel pump.
Result Proceed to OK NG -
OK
END
NG
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
-
-
CHECK IGNITION SYSTEM
-
Perform ignition system On-vehicle Inspection.
Tech Tips
Perform "Inspection After Repair" after repairing or replacing the ignition system.
Result Proceed to OK NG
NG
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
OK
-
-
READ FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Calculate Load 110% or more of the current value of the vehicle*1 Mass air flow meter sub-assembly A AFS Voltage B1S1 Below 3.3 V*2
-
Air fuel ratio sensor
-
Harness or connector
B Both freeze frame data items listed above Values are other than above - C Tech Tips
-
*1: If the mass air flow meter sub-assembly is malfunctioning and incorrectly measures the intake air volume to be higher than the actual volume of air flowing through the intake manifold, the freeze frame data will show a high engine load value.
-
*2: As the air fuel ratio sensor output is low before the sensor warms up, the value at that time cannot be used for diagnosis. If the air fuel ratio sensor is malfunctioning and constantly outputs a value indicating the air fuel ratio is rich, the actual air fuel ratio will become lean and the engine may stall.
-
B
GO TO STEP 43 Click here
C
GO TO STEP 46 Click here
A
-
-
INSPECT MASS AIR FLOW METER SUB-ASSEMBLY
-
Remove the mass air flow meter sub-assembly.
-
Check for foreign matter in the air flow passage of the mass air flow meter sub-assembly.
Result Result Proceed to Visible foreign matter is not present A Visible foreign matter is present B Tech Tips
Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.
B
REPLACE MASS AIR FLOW METER SUB-ASSEMBLY Click here
A
-
-
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM)
-
Check the harnesses and connectors, referring to DTC P0102 inspection procedure.
Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
Make sure there is not an excessive amount of force applied to the wire harness.
Result Proceed to OK NG -
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
-
-
PERFORM DRIVE TEST
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Start the engine and warm it up until the engine coolant temperature stabilizes.
Tech Tips
The A/C switch and all accessory switches should be off.
-
Idle the engine.
-
Using the GTS, read the value of Calculate Load in the Data List.
Powertrain > Engine and ECT > Data ListTester Display Calculate Load Standard Data List Specified Condition Calculate Load 90 to 110% of the current value of the vehicle Tech Tips
Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.
Result Proceed to OK NG
NG
REPLACE MASS AIR FLOW METER SUB-ASSEMBLY Click here
OK
-
-
PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)
-
Connect the GTS to the DLC3.
-
Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes.
Tech Tips
The A/C switch and all accessory switches should be off.
-
Idle the engine.
-
Turn the GTS on.
-
Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / All Data / AFS Voltage B1S1.
Powertrain > Engine and ECT > Active TestActive Test Display Control the Injection Volume for A/F Sensor Data List Display AFS Voltage B1S1 -
Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume.
Standard GTS Display Specified Condition Control the Injection Volume for A/F Sensor (12.5%) Air fuel ratio sensor output voltage is below 3.1 V Control the Injection Volume for A/F Sensor (-12.5%) Air fuel ratio sensor output voltage is higher than 3.4 V Result Result Proceed to Abnormal A Normal B Tech Tips
The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.
B
GO TO STEP 46 Click here
A
-
-
CHECK TERMINAL VOLTAGE (POWER SOURCE OF AIR FUEL RATIO SENSOR)
-
Check the harnesses and connectors, referring to DTC P0031 inspection procedure.
Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
Make sure there is not an excessive amount of force applied to the wire harness.
Result Proceed to OK NG -
NG
REPAIR AIR FUEL RATIO SENSOR POWER SOURCE CIRCUIT Click here
OK
-
-
CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM)
-
Check the harnesses and connectors, referring to DTC P2237 inspection procedure.
Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
Make sure there is not an excessive amount of force applied to the wire harness.
Result Proceed to OK NG -
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
-
-
READ FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
Click here
Result Freeze Frame Data Item for DTC P1605 Result Proceed to Initial Engine Coolant Temp, Ambient Temp for A/C, Initial Intake Air Temp Difference in temperature between each item is less than 10°C (18°F)*1 A Difference in temperature between each item is 10°C (18°F) or higher*2 B Tech Tips
-
*1: A long time had elapsed after stopping the engine.
-
*2: A long time had not elapsed after stopping the engine.
-
B
READ FREEZE FRAME DATA Click here
A
-
-
READ FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
*1 Engine Coolant Temperature Increase after Engine Start (Engine Coolant Temperature - Engine Coolant Temperature at Engine Start) *2 (Minutes) *3 Time Elapsed after Engine Start Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Initial Engine Coolant Temp, Coolant Temp, Engine Run Time Range A
-
Engine coolant temperature sensor
-
Thermostat
A Range B Engine coolant temperature B Range C - C Tech Tips
This step is not directly related to engine stall.
-
B
GO TO STEP 50 Click here
C
GO TO STEP 80 Click here
A
-
-
INSPECT THERMOSTAT
-
Inspect the thermostat.
Result Result Proceed to Abnormal A Normal B Tech Tips
This step is not directly related to engine stall.
A
REPLACE THERMOSTAT Click here
B
GO TO STEP 50 Click here
-
-
READ FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Coolant Temp 120°C (248°F) or higher Engine coolant temperature sensor A Engine coolant temperature is lower than ambient temperature* by 15°C (27°F) or higher Engine coolant temperature sensor Values are other than above - B Tech Tips
*: Use an actual ambient temperature estimated from the Initial Intake Air, Ambient Temp for A/C, and (if possible) the weather when the DTC was detected.
B
CLEAR DTC Click here
A
-
-
INSPECT ENGINE COOLANT TEMPERATURE SENSOR
-
Inspect the engine coolant temperature sensor.
Tech Tips
Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.
Result Result Proceed to Normal A Abnormal B
B
REPLACE ENGINE COOLANT TEMPERATURE SENSOR Click here
A
-
-
CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)
-
Disconnect the engine coolant temperature sensor connector.
-
Disconnect the ECM connector.
-
Measure the resistance according to the value(s) in the table below.
Standard Resistance Tester Connection Condition Specified Condition B3-2 - B31-93 (THW) Always Below 1 Ω B3-1 - B31-94 (ETHW) Always Below 1 Ω B3-2 or B31-93 (THW) - Body ground Always 10 kΩ or higher Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
Make sure there is not an excessive amount of force applied to the wire harness.
Result Proceed to OK NG -
OK
CHECK FOR INTERMITTENT PROBLEMS Click here
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
-
-
CLEAR DTC
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Clear the DTCs.
Powertrain > Engine and ECT > Clear DTCsResult Proceed to NEXT
NEXT
END
-
-
CHECK IGNITION SYSTEM
-
Perform ignition system On-vehicle Inspection.
Tech Tips
Perform "Inspection After Repair" after repairing or replacing the ignition system.
Result Proceed to OK NG
NG
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
OK
-
-
READ FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
Result Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to Total of ISC Learning Value and ISC Feedback Value Below 80% of the current value of the vehicle Intake air volume insufficient A 80% or higher of the current value of the vehicle B
B
PERFORM ACTIVE TEST USING GTS (CONTROL THE VVT LINEAR (BANK1)) Click here
A
-
-
CHECK INTAKE SYSTEM
-
Check for air leakage in the intake system [vacuum hose disconnection, cracks, damaged gaskets, etc.].
Tech Tips
-
If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake pipes increases and the air suction noise becomes louder.
-
If Short FT #1 and Long FT #1 are largely different from the normal values when idling (the intake air volume is small) and almost the same as the normal values when racing the engine (the intake air volume is high), air leakage may be present.
OK There is no air leakage. Tech Tips
Perform "Inspection After Repair" after repairing or replacing the intake system.
Result Proceed to OK NG -
NG
REPAIR OR REPLACE INTAKE SYSTEM
OK
-
-
CHECK INTAKE SYSTEM
-
Check the intake system.
-
Inspect the brake booster assembly (for LHD).
-
Inspect the brake booster assembly (for RHD).
-
Inspect the mass air flow meter sub-assembly.
-
Check the PCV hose.
-
Inspect the PCV valve.
-
Inspect the purge VSV.
Result Result Proceed to Abnormal A Normal B Tech Tips
Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.
-
A
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
B
GO TO STEP 61 Click here
-
-
PERFORM ACTIVE TEST USING GTS (CONTROL THE VVT LINEAR (BANK1))
-
Perform the Active Test, referring to DTC P0011 inspection procedure.
Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems.
-
If the camshaft timing oil control valve assembly (for intake camshaft) is stuck at the advanced side, the valve overlap increases and combustion worsens due to the interval EGR which may cause rough idle or cause the engine to stall.
Result Proceed to OK NG -
NG
REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) Click here
OK
-
-
CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) - ECM)
-
Check the harnesses and connectors, referring to DTC P0010 inspection procedure.
Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
Make sure there is not an excessive amount of force applied to the wire harness.
Result Proceed to OK NG -
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
-
-
PERFORM ACTIVE TEST USING GTS (CONTROL THE VVT EXHAUST LINEAR (BANK1))
-
Perform the Active Test, referring to DTC P0014 inspection procedure.
Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems.
-
If the camshaft timing oil control valve assembly (for exhaust camshaft) is stuck on, the valve overlap increases and combustion worsens due to the internal EGR which may cause rough idle or cause the engine to stall.
Result Proceed to OK NG -
NG
REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT) Click here
OK
-
-
CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT) - ECM)
-
Check the harnesses and connectors, referring to DTC P0013 inspection procedure.
Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
Make sure there is not an excessive amount of force applied to the wire harness.
Result Proceed to OK NG -
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
-
-
READ FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
Result Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to IGN Advance Knock Correct Learn Value Differs from the current value of the vehicle by 10 deg or more Less than 3 deg(CA)
-
Engine coolant temperature sensor
-
Mass air flow meter sub-assembly
-
Knock control sensor
A 3 deg(CA) or more - Differs from the current value of the vehicle by less than 10 deg - - B -
B
CHECK FOR INTERMITTENT PROBLEMS Click here
A
-
-
INSPECT ENGINE COOLANT TEMPERATURE SENSOR
-
Inspect the engine coolant temperature sensor.
Tech Tips
Perform "Inspection After Repair" after replacing the engine coolant temperature sensor.
Result Proceed to OK NG
NG
REPLACE ENGINE COOLANT TEMPERATURE SENSOR Click here
OK
-
-
CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)
-
Disconnect the engine coolant temperature sensor connector.
-
Disconnect the ECM connector.
-
Measure the resistance according to the value(s) in the table below.
Standard Resistance Tester Connection Condition Specified Condition B3-2 - B31-93 (THW) Always Below 1 Ω B3-1 - B31-94 (ETHW) Always Below 1 Ω B3-2 or B31-93 (THW) - Body ground Always 10 kΩ or higher Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
Make sure there is not an excessive amount of force applied to the wire harness.
Result Proceed to OK NG -
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
-
-
INSPECT MASS AIR FLOW METER SUB-ASSEMBLY (INTAKE AIR TEMPERATURE SENSOR)
-
Inspect the mass air flow meter sub-assembly.
Tech Tips
-
If the intake air temperature sent to the ECM is higher than the standard due to the mass air flow meter sub-assembly (intake air temperature sensor) malfunctioning, the ignition timing may become delayed.
-
Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.
Result Proceed to OK NG -
NG
REPLACE MASS AIR FLOW METER SUB-ASSEMBLY Click here
OK
-
-
READ VALUE USING GTS (IGN ADVANCE AND KNOCK CORRECT LEARN VALUE)
-
Connect the GTS to the DLC3.
-
Start the engine and warm it up until the engine coolant temperature stabilizes.
Tech Tips
The A/C switch and all accessory switches should be off.
-
Turn the GTS on.
-
Idle the engine.
-
Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / IGN Advance and Knock Correct Learn Value.
Powertrain > Engine and ECT > Data ListTester Display IGN Advance Knock Correct Learn Value -
Check the Data List indication.
Result Data List Proceed to IGN Advance Knock Correct Learn Value Differs from the current value of the vehicle by 10 deg or more Less than 3 deg(CA) A 3 deg(CA) or more Differs from the current value of the vehicle by less than 10 deg - B Tech Tips
If the results of the checks performed in steps 57 to 65 were all normal and the sum of ISC Feedback Value and ISC Learning Value in the Data List is 120% of the normal value or more, check for carbon deposits in the throttle body assembly. If there are carbon deposits, clean them off to finish the troubleshooting procedure.
A
CHECK KNOCK CONTROL SENSOR CIRCUIT Click here
B
END
-
-
CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY)
-
Check the harness and connectors, referring to Fuel Injector Circuit inspection procedure.
Tech Tips
-
Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
-
Make sure there is not an excessive amount of force applied to the wire harness.
-
A rapid decrease in engine speed may have been caused by a malfunction in all or multiple cylinders. (There may be an electrical malfunction in the wiring shared by all the cylinders.)
Result Proceed to OK NG -
NG
REPAIR FUEL INJECTOR ASSEMBLY POWER SOURCE CIRCUIT Click here
OK
-
-
CHECK IGNITION SYSTEM
-
Perform ignition system On-vehicle Inspection.
Tech Tips
Perform "Inspection After Repair" after repairing or replacing the ignition system.
Result Proceed to OK NG
NG
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
OK
-
-
CHECK FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
Result Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to A/C Signal Air Conditioner FB Val Power Steering Signal A/C Signal display changes from OFF to ON*1 Value is shown - A/C system A Value is 0 L/s Does not change from OFF - B
*2
C
*3
Changes from OFF to ON Power steering system A/C Signal display does not change from OFF*1 - Changes from OFF to ON Does not change from OFF - Tech Tips
-
*1: Check not only the ON/OFF state of the air conditioner but also the change in air conditioner load.
-
*2: for CVT models
-
*3: for manual transaxle models
-
The normal value for the ISC learned value is engine displacement (liters) x 0.9.
-
Even if the results are normal, the power steering system or A/C system may have been malfunctioning. If there are no problems with other parts, inspect the power steering system or A/C system.
-
A
CHECK AIR CONDITIONING SYSTEM Click here
C
CHECK FREEZE FRAME DATA Click here
B
-
-
CHECK FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
Result Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to Electrical Load Signal 1 (2) or Electric Load Feedback Val Electric Load Feedback Val Difference between Engine Speed and SPD (NT) Vehicle Speed Electrical Load Signal 1 (2) display changes from OFF to ON*1, or value displayed for Electric Load Feedback Val increases*1 Value displayed for Electric Load Feedback Val changes - - Electrical load signal circuit C Value displayed for Electric Load Feedback Val does not change At least 1 of the 5 sets of freeze frame data is less than 100 rpm Less than 5 km/h (3 mph) CVT system B 5 km/h (3 mph) or more - A All 5 sets of freeze frame data are 100 rpm or more - - Electrical Load Signal 1 (2) display does not change from OFF, or value displayed for Electric Load Feedback Val does not increase - At least 1 of the 5 sets of freeze frame data is less than 100 rpm Less than 5 km/h (3 mph) CVT system B 5 km/h (3 mph) or more - A All 5 sets of freeze frame data are 100 rpm or more - - Tech Tips
-
*1: If the Electrical Load Signal 1 (2) display changes from OFF to ON, or the "Electric Load Feedback Val" increases, it probably is a malfunction due to a change in electrical load. Check the generator and the continuity and connections between the generator and ECM.
-
If the vehicle speed is 5 km/h (3 mph) or less and the difference between Engine Speed and SPD (NT) is 100 rpm or less, inspect the CVT. (Depending on the rate of vehicle deceleration, the engine speed may have decreased due to the CVT lock-up release being late.)
-
The normal value for the ISC learned value is engine displacement (liters) x 0.9.
-
Even if the results are normal, the electrical load signal system or CVT system may have been malfunctioning. If there are no problems with other parts, inspect the electrical load system or CVT system.
-
B
CHECK CVT SYSTEM Click here
C
CHECK GENERATOR CIRCUIT Click here
A
-
-
CHECK FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
Result Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to Shift SW Status (P Range)
Shift SW Status (N Range)
Neutral Position SW Signal P and N position are both OFF in at least one data set ON when shift lever in D or R Park/Neutral position switch assembly A OFF when shift lever in D or R CVT system B All 5 sets of freeze frame data are ON - - C Tech Tips
Even if the results are normal, the park/neutral position switch assembly or CVT system may have been malfunctioning. If there are no problems with other parts, inspect the park/neutral position switch assembly or CVT system.
A
INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here
B
CHECK CVT SYSTEM Click here
C
CHECK FOR INTERMITTENT PROBLEMS Click here
-
-
CHECK FREEZE FRAME DATA
-
Connect the GTS to the DLC3.
-
Turn the ignition switch to ON.
-
Turn the GTS on.
-
Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
Result Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to Electrical Load Signal 1 (2) or Electric Load Feedback Val Electric Load Feedback Val Electrical Load Signal 1 (2) display changes from OFF to ON*1, or value displayed for Electric Load Feedback Val increases*1 Value displayed for Electric Load Feedback Val changes Electrical load signal circuit A Value displayed for Electric Load Feedback Val does not change - B Electrical Load Signal 1 (2) display does not change from OFF, or value displayed for Electric Load Feedback Val does not increase - - Tech Tips
-
*1: If the Electrical Load Signal 1 (2) display changes from OFF to ON, or the "Electric Load Feedback Val" increases, it probably is a malfunction due to a change in electrical load. Check the generator and the continuity and connections between the generator and ECM.
-
The normal value for the ISC learned value is engine displacement (liters) x 0.9.
-
Even if the results are normal, the electrical load signal system may have been malfunctioning. If there are no problems with other parts, inspect the electrical load system.
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A
CHECK GENERATOR CIRCUIT Click here
B
CHECK FOR INTERMITTENT PROBLEMS Click here
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CHECK FREEZE FRAME DATA
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Connect the GTS to the DLC3.
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Turn the ignition switch to ON.
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Turn the GTS on.
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Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.
Result Freeze Frame Data Item Result Suspected Area Proceed to Throttle Sensor Position, Calculate Load Calculate Load decreases while Throttle Sensor Position increases Mass air flow meter sub-assembly A Calculate Load does not decrease while Throttle Sensor Position increases - B
B
GO TO STEP 76 Click here
A
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INSPECT MASS AIR FLOW METER SUB-ASSEMBLY
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Remove the mass air flow meter sub-assembly.
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Check for foreign matter in the air flow passage of the mass airflow meter sub-assembly.
Result Result Proceed to Visible foreign matter is not present A Visible foreign matter is present B Tech Tips
Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.
B
REPLACE MASS AIR FLOW METER SUB-ASSEMBLY Click here
A
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CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER SUB-ASSEMBLY - ECM)
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Check the harnesses and connectors, referring to DTC P0102 inspection procedure.
Tech Tips
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Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
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Make sure there is not an excessive amount of force applied to the wire harness.
Result Proceed to OK NG -
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
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PERFORM DRIVE TEST
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Connect the GTS to the DLC3.
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Turn the ignition switch to ON.
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Turn the GTS on.
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Start the engine and warm it up until the engine coolant temperature stabilizes.
Tech Tips
The A/C switch and all accessory switches should be off.
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Idle the engine.
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Using the GTS, read the value of Calculate Load in the Data List.
Powertrain > Engine and ECT > Data ListTester Display Calculate Load Standard Data List Specified Condition Calculate Load 90 to 110% of the current value of the vehicle Tech Tips
Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.
Result Proceed to OK NG
NG
REPLACE MASS AIR FLOW METER SUB-ASSEMBLY Click here
OK
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CHECK TERMINAL VOLTAGE (POWER SOURCE OF FUEL INJECTOR ASSEMBLY)
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Check the harness and connectors, referring to Fuel Injector Circuit inspection procedure.
Tech Tips
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Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
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Make sure there is not an excessive amount of force applied to the wire harness.
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A rapid decrease in engine speed may have been caused by a malfunction in all or multiple cylinders. (There may be an electrical malfunction in the wiring shared by all the cylinders.)
Result Proceed to OK NG -
NG
REPAIR FUEL INJECTOR ASSEMBLY POWER SOURCE CIRCUIT Click here
OK
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CHECK IGNITION SYSTEM
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Perform ignition system On-vehicle Inspection.
Tech Tips
Perform "Inspection After Repair" after repairing or replacing the ignition system.
Proceed to Proceed to OK NG
NG
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
OK
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PERFORM ACTIVE TEST USING GTS (CONTROL THE FUEL PUMP / SPEED)
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Connect the GTS to the DLC3.
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Turn the ignition switch to ON.
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Turn the GTS on.
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Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.
Powertrain > Engine and ECT > Active TestTester Display Control the Fuel Pump / Speed -
Check whether the fuel pump operating sound occurs when performing the Active Test on the GTS.
Standard GTS Operation Specified Condition ON Operating sound heard OFF Operating sound not heard Result Result Proceed to Abnormal A Normal B Tech Tips
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Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
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While performing the Active Test, make sure that there is no fuel leakage from the pipes, no signs that fuel has leaked, and no fuel smell.
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If the fuel pump operating noise is abnormal, proceed to step 79.
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B
CHECK FUEL SYSTEM Click here
A
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INSPECT FUEL PUMP
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Inspect the fuel pump.
Result Proceed to OK NG
OK
CHECK FUEL PUMP CONTROL CIRCUIT Click here
NG
REPLACE FUEL PUMP Click here
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CHECK FUEL SYSTEM
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Check the fuel system.
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Check the fuel pump operation.
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Check the fuel leaks.
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Check the fuel pressure.
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Perform the Active Test [Control the All Cylinder Fuel Cut].
Result Result Proceed to Abnormal A Normal B -
B
CHECK FOR INTERMITTENT PROBLEMS Click here
A
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CHECK FUEL SYSTEM
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Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter and inside the fuel tank), and for signs that the fuel pump was stuck.
Result Result Proceed to There is no foreign matter and no signs that fuel pump was stuck A There is foreign matter or signs that fuel pump was stuck B Tech Tips
If there is foreign matter such as iron particles on the fuel pump, fuel filter or fuel tank, remove the foreign matter.
B
REPAIR OR REPLACE FUEL SYSTEM
A
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CHECK FUEL SYSTEM
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Check the fuel system.
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Check the fuel pump operation.
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Check the fuel leaks.
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Check the fuel pressure.
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Perform the Active Test [Control the All Cylinder Fuel Cut].
Tech Tips
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For the fuel system On-vehicle Inspection, refer to the following procedures.
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Perform "Inspection After Repair" after replacing the fuel pump.
Result Proceed to OK NG -
OK
END
NG
REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA
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