SFI SYSTEM, Diagnostic DTC:P1603

DTC Code DTC Name
P1603 Engine Stall History

DESCRIPTION

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.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P1603

Engine Stall History

The engine stops without the ignition switch*1 or engine switch*2 being operated (1 trip detection logic).

  • Air leak in intake system

  • Purge VSV

  • Brake booster hose not connected properly

  • Manifold absolute pressure sensor

  • Engine coolant temperature sensor

  • Wire harness or connector

  • Heated oxygen sensor (sensor 1)

  • Power supply circuit (purge VSV, fuel injector assembly, No. 1 ignition coil)

  • Fuel pump

  • Fuel pump control system

  • Fuel line

  • Throttle body with motor assembly

  • Camshaft timing oil control valve assembly

  • Air conditioning system

  • Power steering system

  • Electrical load signal system

  • MMT system

  • EGR valve assembly

  • ECM

Does not come on

DTC stored (for MMT models)

- (for M/T models)

*1: w/o entry and start system

*2: w/ entry and start system

CAUTION / NOTICE / HINT

Tip:

  • In contrast to normal malfunction diagnosis for components, circuit and systems, DTC P1603 is used to determine the malfunctioning area from the problem symptoms and freeze frame data when the user mentions problems such as engine stall.

    As this DTC can be stored as a result of certain user actions, even if this DTC is output, if the customer makes no mention of problems, clear this DTC 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.

    Click here

  • When confirming freeze frame data, if there are multiple items related to the cause of the malfunction, perform troubleshooting for all related items.

  • 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 position) 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 harness 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.

A215379E14

1:

  • 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.

2:

  • 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.

3:

  • If the air-fuel ratio was abnormal, there may have been an intake air leak, sensor malfunction, or fuel supply problem.

  • If the air-fuel ratio was normal, the air volume may have been insufficient, the ignition timing may have been incorrect or the EGR valve may have been stuck open.

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

Air-fuel ratio abnormal

Igniter abnormal

  • Power supply circuit

  • No. 1 ignition coil

  • Spark plug

9, 32, 52

Air suction

  • Intake system connections

  • Purge VSV system

  • Brake booster assembly

5 to 8

Sensor malfunction (value from sensor too lean)

  • Manifold absolute pressure sensor

  • Engine coolant temperature sensor

  • Heated oxygen sensor (sensor 1) system

10 to 22

Sensor malfunction (value from sensor too rich)

33 to 36

42 to 50

Fuel supply problem

  • Fuel pump control system

  • Purge VSV system

  • Fuel line

  • ECM

23 to 31

37 to 41

Intake air volume insufficient

ISC flow rate

  • Throttle body with motor assembly (ISC valve)

53 to 55

Excessive valve overlap

  • Camshaft timing oil control valve assembly

56, 57

Abnormal combustion

  • EGR valve assembly

58, 59

Ignition timing incorrect

Does not operate as expected

  • Engine coolant temperature sensor

  • Knock control sensor

  • Manifold absolute pressure sensor

61 to 63

Rapidly decreases and engine stalls

Ignition and injection stops (electrical system malfunction)

Power temporarily cut

  • Power supply circuit (fuel injector assembly, No. 1 ignition coil)

64, 65

External part malfunctioning

Increase in load

  • Air conditioning system

  • Electrical load signal system

  • Power steering system

  • MMT system

66, 67

Accelerating

-

Crankshaft position sensor, Camshaft position sensor malfunction

Power temporarily cut

  • Check DTCs

1

Manifold absolute pressure sensor

Sensor malfunction

  • Manifold absolute pressure sensor

68 to 71

Fuel supply problem

Fuel leak, clog

  • Fuel pump control system

  • Fuel line

74 to 78

Ignition and injection stops (electrical system malfunction)

Power temporarily cut

  • Power supply circuit (fuel injector assembly, No. 1 ignition coil)

72, 73
Note:

After replacing the ECM, perform electronic throttle learning and idle learning.

Click here

PROCEDURE

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION DTC P1603)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Read the DTCs.

      Powertrain > Engine and ECT > Trouble Codes

      Result

      Result

      Proceed to

      DTC P1603 is output

      A

      DTCs other than P1603 are output

      B
      Tip:

      If any DTCs other than P1603 are output, troubleshoot those DTCs first.

    B

    GO TO DTC CHART

    Click here

    A

  2. READ FREEZE FRAME DATA (IMMOBILISER FUEL CUT)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.

      Click here

      OK

      Immobiliser Fuel Cut is OFF.

      Result

      Result

      Proceed to

      NG

      A

      OK

      B
    B

    READ FREEZE FRAME DATAClick here

    A

  3. CHECK IMMOBILISER SYSTEM

    1. Connect the GTS to the DLC3.

    2. Start the engine.

    3. Idle the engine.

    4. Turn the GTS on.

    5. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Immobiliser Communication.

      Powertrain > Engine and ECT > Data List

      Tester Display

      Immobiliser Communication

    6. 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

  4. READ FREEZE FRAME DATA

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.

      Click here

      Result

      Problem Symptom

      Freeze Frame Data Item for DTC P1603

      Suspected Area

      Proceed to

      Closed Throttle Position SW

      Engine Speed

      Total of Short FT and Long FT

      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

      At least one is OFF

      -

      -

      • Sensor malfunction

      • Injection stoppage, ignition stoppage

      • Fuel supply problem

      E
      A215381E10
      Tip:

      • *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 apply. Otherwise, the engine speed is considered to have decreased slowly.

        1. In the freeze frame data, the decrease in engine speed from #3 to #5 is 400 rpm or more.

        2. In the freeze frame data, the engine speed at #5 is 120 rpm or less.

      • *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.

    B

    CHECK IGNITION SYSTEMClick here

    C

    CHECK IGNITION SYSTEMClick here

    D

    CHECK HARNESS AND CONNECTOR (FUEL INJECTOR CIRCUIT)Click here

    E

    READ FREEZE FRAME DATAClick here

    A

  5. CHECK INTAKE SYSTEM

    1. Check for air suction in the intake system [vacuum hose disconnection, cracks, gaskets, etc.].

      Click here

      Tip:

      • 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 and Long FT 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 suction may be present.

      OK

      There is no air suction.

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE INTAKE SYSTEM

    OK

  6. INSPECT PURGE VSV

    A201060

    1. Disconnect the fuel vapor feed hose (charcoal canister side) of the purge VSV.

    2. Start the engine.

    3. Idle the engine.

    4. Disconnect the connector of the purge VSV.

    5. Check if air flows through the purge VSV.

      OK

      Air does not flow.

      Tip:

      When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    INSPECT PURGE VSV

    Click here

    OK

  7. READ FREEZE FRAME DATA

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. 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 P1603

      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

      A

      All 5 sets of freeze frame data are OFF

      -

      B
    B

    READ FREEZE FRAME DATAClick here

    A

  8. READ VALUE USING GTS (SHORT FT #1)

    A217928E13

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes.

    4. Idle the engine.

    5. Turn the GTS on.

    6. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Short FT #1.

      Powertrain > Engine and ECT > Data List

      Tester 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
      Tip:

      When air leakage from the brake booster assembly is present, the feedback compensation increases because the air fuel ratio becomes lean.

    B

    REPLACE BRAKE BOOSTER ASSEMBLY (FOR LHD)

    Click here

    C

    REPLACE BRAKE BOOSTER ASSEMBLY (FOR RHD)

    Click here

    A

  9. CHECK IGNITION SYSTEM

    1. Perform ignition system On-vehicle Inspection.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

    OK

  10. READ FREEZE FRAME DATA

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. 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 P1603

      Result

      Suspected Area

      Proceed to

      Calculate Load

      Below 90% of the current value of the vehicle*1

      Manifold absolute pressure sensor

      A

      O2S B1S1

      0.45 or less*2

      • Heated oxygen sensor (sensor 1)

      • Wire harness or connector

      • Actual air-fuel ratio abnormal

      B
      Tip:

      • *1: If the manifold absolute pressure sensor is malfunctioning and incorrectly measures the pressure to be less than the actual intake manifold pressure, the freeze frame data will show a low engine load value.

      • *2: If the heated oxygen sensor (sensor 1) 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

  11. READ VALUE USING GTS (MAP)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAP.

      Powertrain > Engine and ECT > Data List

      Tester Display

      MAP

    5. Read the MAP value.

      Standard

      Same as actual atmospheric pressure.

      Tip:

      Reference MAP value:

      Engine Condition

      Specified Condition

      Ignition switch ON, engine stopped

      80 to 110 kPa*

      *: varies with weather condition.

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

    Click here

    OK

  12. CHECK HARNESS AND CONNECTOR (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM)

    1. Check the harnesses and connectors, referring to DTC P0107 inspection procedure.

      Click here

      Tip:

      • 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

  13. PERFORM DRIVE TEST

    1. Connect the GTS to the DLC3.

    2. Start the engine and warm it up until the engine coolant temperature stabilizes.

      Tip:

      The A/C switch and all accessory switches should be off.

    3. Idle the engine.

    4. Turn the GTS on.

    5. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Calculate Load.

      Powertrain > Engine and ECT > Data List

      Tester Display

      Calculate Load

    6. Read the Calculate Load value.

      Standard

      Data List

      Specified Condition

      Calculate Load

      90 to 110% of the normal value of the vehicle

      Result

      Result

      Proceed to

      NG

      A

      OK

      B
    A

    REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

    Click here

    B

    READ FREEZE FRAME DATAClick here

  14. PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)

    A342238E01

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes.

    4. Idle the engine.

    5. Turn the GTS on.

    6. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / All Data / O2S B1S1.

      Powertrain > Engine and ECT > Active Test

      Active Test Display

      Control the Injection Volume for A/F Sensor

      Data List Display

      O2S B1S1

    7. Read the output voltage from the heated oxygen sensor (sensor 1) when increasing and decreasing the fuel injection volume.

      Standard

      GTS Display

      Specified Condition

      Control the Injection Volume for A/F Sensor (12.5%)

      Heated oxygen sensor (sensor 1) output voltage is higher than 0.55 V

      Control the Injection Volume for A/F Sensor (-12.5%)

      Heated oxygen sensor (sensor 1) output voltage is below 0.4 V

      Result

      Result

      Proceed to

      NG

      A

      OK

      B
      Tip:

      The heated oxygen sensor (sensor 1) has an output delay of a few seconds and the heated oxygen sensor (sensor 2) has a maximum output delay of approximately 20 seconds.

    B

    READ FREEZE FRAME DATAClick here

    A

  15. CHECK TERMINAL VOLTAGE (POWER SOURCE OF HEATED OXYGEN SENSOR (SENSOR 1))

    1. Check the terminals voltage, referring to DTC P0135 inspection procedure.

      Click here

    Tip:

    • 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

    CHECK POWER SOURCE CIRCUIT (HEATED OXYGEN SENSOR (SENSOR 1))

    Click here

    OK

  16. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR (SENSOR 1) - ECM)

    1. Check the harnesses and connectors, referring to DTC P0131 inspection procedure.

      Click here

    Tip:

    • 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

  17. READ FREEZE FRAME DATA

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. 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 P1603

      Result

      Proceed to

      Ambient Temp for A/C, Initial Engine Coolant Temp, Initial Intake Air Temp

      Difference in temperature between each item is below 10°C (18°F)*1

      A

      Difference in temperature between each item is 10°C (18°F) or more*2

      B
      Tip:

      • *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 DATAClick here

    A

  18. READ FREEZE FRAME DATA

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Using the GTS, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored.

      Click here

      A217929E01

      Result

      Freeze Frame Data Item for DTC P1603

      Result

      Suspected Area

      Proceed to

      Coolant Temp, Engine Run Time, Initial Engine Coolant Temp

      Range A

      • Engine coolant temperature sensor

      • Thermostat

      A

      Range B

      Engine coolant temperature sensor

      B

      Range C

      -

      C
      Tip:

      This step is not directly related to engine stall.

    B

    INSPECT ENGINE COOLANT TEMPERATURE SENSORClick here

    C

    READ FREEZE FRAME DATAClick here

    A

  19. INSPECT THERMOSTAT

    1. Inspect the thermostat.

      Click here

      Result

      Result

      Proceed to

      NG

      A

      OK

      B
      Tip:

      This step is not directly related to engine stall.

    A

    REPLACE THERMOSTAT

    Click here

    B

    INSPECT ENGINE COOLANT TEMPERATURE SENSORClick here

  20. READ FREEZE FRAME DATA

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. 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 P1603

      Result

      Suspected Area

      Proceed to

      Coolant Temp

      120°C (248°F) or more

      Engine coolant temperature sensor

      A

      Engine coolant temperature is lower than outside temperature* by 15°C (27°F) or more

      Engine coolant temperature sensor

      Values are other than above

      -

      B
      Tip:

      *: 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

    READ FREEZE FRAME DATAClick here

    A

  21. INSPECT ENGINE COOLANT TEMPERATURE SENSOR

    1. Inspect the engine coolant temperature sensor.

      Click here

      Result

      Proceed to

      OK

      NG
    NG

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR

    Click here

    OK

  22. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)

    1. Disconnect the engine coolant temperature sensor connector.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      B17-2 - B31-95 (THW)

      Always

      Below 1 Ω

      B17-1 - B31-96 (ETHW)

      Always

      Below 1 Ω

      B17-2 or B31-95 (THW) - Body ground

      Always

      10 kΩ or higher
      Tip:

      • 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

  23. READ FREEZE FRAME DATA

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. 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 P1603

      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
      Tip:

      If the purge VSV is stuck closed, air-fuel ratio compensation by the purge 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

  24. PERFORM ACTIVE TEST USING GTS (ACTIVATE THE VSV FOR EVAP CONTROL)

    A200511C07

    *a

    VSV is on

    *b

    VSV is off

    1. Connect the GTS to the DLC3.

    2. Disconnect the fuel vapor feed hose (charcoal canister side) of the purge VSV.

    3. Start the engine.

    4. Turn the GTS on.

    5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Evap Control.

      Powertrain > Engine and ECT > Active Test

      Tester Display

      Activate the VSV for Evap Control

    6. When the purge VSV is operated using the GTS, check whether the port of the purge VSV applies suction to your finger.

      OK

      GTS Operation

      Specified Condition

      VSV ON

      Purge VSV port applies suction to finger

      VSV OFF

      Purge VSV port applies no suction to finger

      Result

      Result

      Proceed to

      NG

      A

      OK

      B
    B

    PERFORM ACTIVE TEST USING GTS (CONTROL THE FUEL PUMP/SPEED)Click here

    A

  25. INSPECT PURGE VSV (RESISTANCE)

    1. Inspect the purge VSV.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE PURGE VSV

    Click here

    OK

  26. CHECK TERMINAL VOLTAGE (POWER SOURCE OF PURGE VSV)

    1. Check the harnesses and connectors, referring to DTC P0443 inspection procedure.

      Click here

    Tip:

    • 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

    CHECK POWER SOURCE CIRCUIT (PURGE VSV)

    Click here

    OK

  27. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM)

    1. Check the harnesses and connectors, referring to DTC P0443 inspection procedure.

      Click here

    Tip:

    • 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

  28. CLEAR DTC

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.

      Powertrain > Engine and ECT > Clear DTCs

    Result

    Proceed to

    NEXT
    NEXT

  29. READ VALUE USING GTS (EVAP (PURGE) VSV)

    1. Connect the GTS to the DLC3.

    2. Start the engine and warm it up until the engine coolant temperature stabilizes.

      Tip:

      The A/C switch and all accessory switches should be off.

    3. Idle the engine for 15 minutes or more.

    4. Turn the GTS on.

    5. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / EVAP (Purge) VSV.

      Powertrain > Engine and ECT > Data List

      Tester Display

      EVAP (Purge) VSV

    6. Read the EVAP (Purge) VSV value.

      Standard

      Data List

      Specified Condition

      EVAP (Purge) VSV

      Value other than 0% is displayed

      Result

      Result

      Proceed to

      NG

      A

      OK

      B
    B

    CHECK FOR INTERMITTENT PROBLEMS

    Click here

    A

  30. PERFORM ACTIVE TEST USING GTS (ACTIVATE THE VSV FOR EVAP CONTROL)

    A200511C07

    *a

    VSV is on

    *b

    VSV is off

    1. Disconnect the fuel vapor feed hose (charcoal canister side) of the purge VSV.

    2. Connect the GTS to the DLC3.

    3. Start the engine.

    4. Turn the GTS on.

    5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Evap Control.

      Powertrain > Engine and ECT > Active Test

      Tester Display

      Activate the VSV for Evap Control

    6. 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

      NG

      A

      OK

      B
      Tip:

      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

  31. CHECK CONNECTOR CONNECTION CONDITION (ECM)

    1. Check the ECM connector connection condition.

      Tip:

      • 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

  32. CHECK IGNITION SYSTEM

    1. Perform ignition system On-vehicle Inspection.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

    OK

  33. READ FREEZE FRAME DATA

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. 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 P1603

      Result

      Suspected Area

      Proceed to

      Calculate Load

      110% or more of the current value of the vehicle*1

      Manifold absolute pressure sensor

      A

      O2S B1S1

      More than 0.45 V*2

      • Heated oxygen sensor (sensor 1)

      • Harness and connector

      B

      Both freeze frame data items listed above

      Values are other than above

      -

      C
      Tip:

      • *1: If the manifold absolute pressure sensor is malfunctioning and incorrectly measures the intake air volume to be higher than the actual intake air volume, the freeze frame data will show a high engine load value.

      • *2: As the heated oxygen sensor (sensor 1) output is low before the sensor warms up, the value at that time cannot be used for diagnosis. If the heated oxygen sensor (sensor 1) 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

    PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)Click here

    C

    READ FREEZE FRAME DATAClick here

    A

  34. READ VALUE USING GTS (MAP)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAP.

      Powertrain > Engine and ECT > Data List

      Tester Display

      MAP

    5. Read the MAP value.

      Standard

      Same as actual atmospheric pressure.

      Tip:

      Reference MAP value:

      Engine Condition

      Specified Condition

      Ignition switch ON, engine stopped

      80 to 110 kPa*

      *: varies with weather condition.

      Result

      Proceed to

      OK

      NG
    NG

    REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

    Click here

    OK

  35. CHECK HARNESS AND CONNECTOR (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM)

    1. Check the harnesses and connectors, referring to DTC P0107 inspection procedure.

      Click here

      Tip:

      • 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

  36. PERFORM DRIVE TEST

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Start the engine and warm it up until the engine coolant temperature stabilizes.

      Tip:

      The A/C switch and all accessory switches should be off.

    5. Idle the engine.

    6. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Calculate Load.

      Powertrain > Engine and ECT > Data List

      Tester Display

      Calculate Load

    7. Read the Calculate Load value.

      Standard

      Data List

      Specified Condition

      Calculate Load

      90 to 110% of the normal value of the vehicle

    Result

    Proceed to

    OK

    NG
    OK

    PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)Click here

    NG

    REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

    Click here

  37. PERFORM ACTIVE TEST USING GTS (CONTROL THE FUEL PUMP/SPEED)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed.

      Powertrain > Engine and ECT > Active Test

      Tester Display

      Control the Fuel Pump / Speed

    5. 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 head

      Result

      Result

      Proceed to

      NG

      A

      OK

      B
      Tip:

      • 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 38.

    B

    CHECK FUEL SYSTEMClick here

    A

  38. INSPECT FUEL PUMP (RESISTANCE)

    1. Inspect the fuel pump.

      Click here

    Result

    Proceed to

    OK

    NG
    OK

    CHECK FUEL PUMP CONTROL CIRCUIT

    Click here

    NG

    REPLACE FUEL PUMP

    Click hereClick here

  39. CHECK FUEL SYSTEM

    1. 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].

      Tip:

      For the fuel system On-vehicle Inspection, refer to the following procedures.

      Click here

      Result

      Result

      Proceed to

      NG

      A

      OK

      B
    B

    CHECK FOR INTERMITTENT PROBLEMS

    Click here

    A

  40. CHECK FUEL SYSTEM

    1. 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
      Tip:

      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

  41. CHECK FUEL SYSTEM

    1. 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

    Proceed to

    OK

    NG
    OK

    END

    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

  42. PERFORM ACTIVE TEST USING GTS (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)

    A342238E01

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes.

    4. Idle the engine.

    5. Turn the GTS on.

    6. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor / All Data / O2S B1S1.

      Powertrain > Engine and ECT > Active Test

      Active Test Display

      Control the Injection Volume for A/F Sensor

      Data List Display

      O2S B1S1

    7. Read the output voltage from the heated oxygen sensor (sensor 1) when increasing and decreasing the fuel injection volume.

      Standard

      GTS Display

      Specified Condition

      Control the Injection Volume for A/F Sensor (12.5%)

      Heated oxygen sensor (sensor 1) output voltage is higher than 0.55 V

      Control the Injection Volume for A/F Sensor (-12.5%)

      Heated oxygen sensor (sensor 1) output voltage is below 0.4 V

      Result

      Result

      Proceed to

      NG

      A

      OK

      B
      Tip:

      The heated oxygen sensor (sensor 1) has an output delay of a few seconds and the heated oxygen sensor (sensor 2) has a maximum output delay of approximately 20 seconds.

    B

    READ FREEZE FRAME DATAClick here

    A

  43. CHECK TERMINAL VOLTAGE (POWER SOURCE OF HEATED OXYGEN SENSOR (SENSOR 1))

    1. Check the terminals voltage, referring to DTC P0135 inspection procedure.

      Click here

      Tip:

      • 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

    CHECK POWER SOURCE CIRCUIT (HEATED OXYGEN SENSOR (SENSOR 1))

    Click here

    OK

  44. CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR (SENSOR 1) - ECM)

    1. Check the harnesses and connectors, referring to DTC P0131 inspection procedure.

      Click here

      Tip:

      • 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

    READ FREEZE FRAME DATAClick here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  45. READ FREEZE FRAME DATA

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. 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 P1603

      Result

      Proceed to

      Ambient Temp for A/C, Initial Engine Coolant Temp, Initial Intake Air Temp

      Difference in temperature between each item is below 10°C (18°F)*1

      A

      Difference in temperature between each item is 10°C (18°F) or more*2

      B
      Tip:

      • *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 DATAClick here

    A

  46. READ FREEZE FRAME DATA

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Using the GTS, confirm the vehicle conditions present when the DTC was stored which are recorded in the freeze frame data.

      Click here

      A217929E01

      Result

      Freeze Frame Data Item for DTC P1603

      Result

      Suspected Area

      Proceed to

      Coolant Temp, Engine Run Time, Initial Engine Coolant Temp

      Range A

      • Engine coolant temperature sensor

      • Thermostat

      A

      Range B

      Engine coolant temperature sensor

      B

      Range C

      -

      C
      Tip:

      This step is not directly related to engine stall.

    B

    INSPECT ENGINE COOLANT TEMPERATURE SENSORClick here

    C

    CHECK FUEL SYSTEMClick here

    A

  47. INSPECT THERMOSTAT

    1. Inspect the thermostat.

      Click here

      Result

      Result

      Proceed to

      NG

      A

      OK

      B
      Tip:

      This step is not directly related to engine stall.

    A

    REPLACE THERMOSTAT

    Click here

    B

    INSPECT ENGINE COOLANT TEMPERATURE SENSORClick here

  48. READ FREEZE FRAME DATA

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. 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 P1603

      Result

      Suspected Area

      Proceed to

      Coolant Temp

      120°C (248°F) or more

      Engine coolant temperature sensor

      A

      Engine coolant temperature is lower than outside temperature* by 15°C (27°F) or more

      Engine coolant temperature sensor

      Values are other than above

      -

      B
      Tip:

      *: 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 DTCClick here

    A

  49. INSPECT ENGINE COOLANT TEMPERATURE SENSOR

    1. Inspect the engine coolant temperature sensor.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR

    Click here

    OK

  50. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)

    1. Disconnect the engine coolant temperature sensor connector.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      B17-2 - B31-95 (THW)

      Always

      Below 1 Ω

      B17-1 - B31-96 (ETHW)

      Always

      Below 1 Ω

      B17-2 or B31-95 (THW) - Body ground

      Always

      10 kΩ or higher
      Tip:

      • 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

  51. CLEAR DTC

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Clear the DTCs.

      Powertrain > Engine and ECT > Clear DTCs

    Result

    Proceed to

    NEXT
    NEXT

    END

  52. CHECK IGNITION SYSTEM

    1. Perform ignition system On-vehicle Inspection.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

    OK

  53. READ FREEZE FRAME DATA

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. 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 P1603

      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 more of the current value of the vehicle

      B
    B

    PERFORM ACTIVE TEST USING GTS (CONTROL THE VVT SYSTEM)Click here

    A

  54. CHECK INTAKE SYSTEM

    1. Check for air leakage in the intake system [vacuum hose disconnection, cracks, damaged gaskets, etc.].

      Click here

      Tip:

      • 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.

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE INTAKE SYSTEM

    OK

  55. CHECK INTAKE SYSTEM

    1. Check the intake system.

      Result

      Result

      Proceed to

      NG

      A

      OK

      B
    A

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

    B

    READ FREEZE FRAME DATAClick here

  56. PERFORM ACTIVE TEST USING GTS (CONTROL THE VVT SYSTEM)

    1. Perform the Active Test, referring to DTC P0011 inspection procedure.

      Click here

      Tip:

      • 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 is stuck at the advanced side, 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

    Click here

    OK

  57. CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY - ECM)

    1. Check the harnesses and connectors, referring to DTC P0010 inspection procedure.

      Click here

      Tip:

      • 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

  58. PERFORM ACTIVE TEST USING GTS (CONTROL THE EGR STEP POSITION)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.

      Tip:

      • When performing the Active Test, make sure the shift lever is in neutral.

      • The A/C switch and all accessory switches should be off.

    5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position / All Data / MAP and Throttle Position.

      Powertrain > Engine and ECT > Active Test

      Active Test Display

      Control the EGR Step Position

      Data List Display

      MAP

      Throttle Position

    6. Confirm that Throttle Position is ON and check the engine idling condition and the value of MAP in the Data List while performing the Active Test.

      Tip:

      • Do not leave the EGR valve open for 10 seconds or more during the Active Test.

      • Be sure to return the EGR valve to step 0 when the Active Test is completed.

      • Do not open the EGR valve 20 steps or more during Active Test.

      OK

      MAP and idling condition change in response to EGR step position as follows.

      Standard

      -

      EGR Step Position (Active Test)

      0 Steps

      0 to 20 Steps

      Idling condition

      Steady idling

      Idling changes from steady to rough idling or engine stalls

      MAP value

      (Data List)

      29 to 37 kPa

      (EGR valve is fully closed)

      MAP value is at least +10 kPa higher than when EGR valve is fully closed
      Tip:

      During Active Test, if the idling condition does not change in response to EGR step position, then there is probably a malfunction in EGR valve.

      Result

      Result

      Proceed to

      NG

      A

      OK

      B
    B

    READ FREEZE FRAME DATAClick here

    A

  59. INSPECT EGR VALVE ASSEMBLY

    1. Remove the EGR valve assembly.

      Click here

    2. Check if the EGR valve assembly is stuck open.

      OK

      EGR valve is tightly closed (It is not stuck open).

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE EGR VALVE ASSEMBLY

    Click here

    OK

  60. READ FREEZE FRAME DATA

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. 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 P1603

      Suspected Area

      Proceed to

      IGN Advance

      Differs from the current value of the vehicle by 10 deg or more

      • Engine coolant temperature sensor

      • Manifold absolute pressure sensor

      • Knock control sensor

      A

      Differs from the current value of the vehicle by less than 10 deg

      -

      B
    B

    CHECK FOR INTERMITTENT PROBLEMS

    Click here

    A

  61. INSPECT ENGINE COOLANT TEMPERATURE SENSOR

    1. Inspect the engine coolant temperature sensor.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR

    Click here

    OK

  62. CHECK HARNESS AND CONNECTOR (ENGINE COOLANT TEMPERATURE SENSOR - ECM)

    1. Disconnect the engine coolant temperature sensor connector.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      B17-2 - B31-95 (THW)

      Always

      Below 1 Ω

      B17-1 - B31-96 (ETHW)

      Always

      Below 1 Ω

      B17-2 or B31-95 (THW) - Body ground

      Always

      10 kΩ or higher
      Tip:

      • 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

  63. READ VALUE USING GTS (IGN ADVANCE)

    1. Connect the GTS to the DLC3.

    2. Start the engine and warm it up until the engine coolant temperature stabilizes.

      Tip:

      The A/C switch and all accessory switches should be off.

    3. Turn the GTS on.

    4. Idle the engine.

    5. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / IGN Advance.

      Powertrain > Engine and ECT > Data List

      Tester Display

      IGN Advance

    6. Check the Data List indication.

      Result

      GTS Display

      Proceed to

      Differs from the normal value of the vehicle by 10 deg or more

      A

      Differs from the normal value of the vehicle by less than 10 deg

      B
      Tip:

      • If the results of the checks performed in steps 56 to 63 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.

      • If the intake air temperature sent to the ECM is higher than the standard due to the manifold absolute pressure sensor (intake air temperature sensor) malfunctioning, the ignition timing may become delayed.

    A

    CHECK KNOCK CONTROL SENSOR CIRCUIT

    Click here

    B

    REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

    Click here

  64. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR CIRCUIT)

    1. Check the harnesses and connectors, referring to Fuel Injector Circuit inspection procedure.

      Click here

      Tip:

      • 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 OR REPLACE HARNESS OR CONNECTOR

    OK

  65. CHECK IGNITION SYSTEM

    1. Perform ignition system On-vehicle inspection.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

    OK

  66. READ FREEZE FRAME DATA

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. 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 P1603

      Suspected Area

      Proceed to

      A/C Signal

      Air Conditioner FB Val

      A/C Signal display changes from OFF to ON*1

      Value is shown

      A/C system

      A

      *2

      B

      *3

      Value is 0 L/s

      -

      C

      A/C Signal display does not change from OFF*1

      -

      Power steering system

      -

      *1: Check not only the ON/OFF state of the air conditioner but also the change in air conditioner load.

      *2: for automatic air conditioning

      *3: except automatic air conditioning

      Tip:

      Even if the results are normal, the A/C system may have been malfunctioning. If there are no problems with other parts, inspect the A/C system.

    A

    CHECK AIR CONDITIONING SYSTEM (FOR AUTOMATIC AIR CONDITIONING)

    Click here

    B

    CHECK AIR CONDITIONING SYSTEM (EXCEPT AUTOMATIC AIR CONDITIONING)

    Click here

    C

  67. READ FREEZE FRAME DATA

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. 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 P1603

      Suspected Area

      Proceed to

      Electrical Load Signal, Electrical Load compensation amount

      Electrical Load Feedback Val compensation amount

      Electrical Load Signal 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

      *2

      B

      *3

      Value displayed for Electric Load Feedback Val does not change

      MMT system

      C

      Electrical Load Signal display does not change from OFF, or value displayed for Electric Load Feedback Val does not increase

      -
      Tip:

      • *1: If the Electrical Load Signal 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 ECM.

      • *2: w/ stop and start system

      • *3: w/o stop and start system

    A

    CHECK GENERATOR CIRCUIT

    Click here

    B

    CHECK GENERATOR CIRCUIT

    Click here

    C

    CHECK MULTI-MODE MANUAL TRANSAXLE SYSTEM

    Click here

  68. READ FREEZE FRAME DATA

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. 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

      Result

      Suspected Area

      Proceed to

      Calculate Load, Throttle Sensor Position

      Calculate Load decreases while Throttle Sensor Position increases

      Manifold absolute pressure sensor

      A

      Calculate Load does not decrease while Throttle Sensor Position increases

      -

      B
    B

    CHECK HARNESS AND CONNECTOR (FUEL INJECTOR CIRCUIT)Click here

    A

  69. READ VALUE USING GTS (MAP)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAP.

      Powertrain > Engine and ECT > Data List

      Tester Display

      MAP

    5. Read the MAP value.

      Standard

      Same as actual atmospheric pressure.

      Tip:

      Reference MAP value:

      Engine Condition

      Specified Condition

      Ignition switch ON, engine stopped

      80 to 110 kPa*

      *: Varies with weather condition.

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

    Click here

    OK

  70. CHECK HARNESS AND CONNECTOR (MANIFOLD ABSOLUTE PRESSURE SENSOR - ECM)

    1. Check the harnesses and connectors, referring to DTC P0107 inspection procedure.

      Click here

      Tip:

      • 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

  71. PERFORM DRIVE TEST

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Start the engine and warm it up until the engine coolant temperature stabilizes.

      Tip:

      The A/C switch and all accessory switches should be off.

    5. Idle the engine.

    6. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Calculate Load.

      Powertrain > Engine and ECT > Data List

      Tester Display

      Calculate Load

    7. Read the Calculate Load value.

      Standard

      Data List

      Specified Condition

      Calculate Load

      90 to 110% of the normal value of the vehicle

    Result

    Proceed to

    OK

    NG
    OK

    CHECK HARNESS AND CONNECTOR (FUEL INJECTOR CIRCUIT)Click here

    NG

    REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

    Click here

  72. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR CIRCUIT)

    1. Check the harnesses and connectors, referring to Fuel Injector Circuit inspection procedure.

      Click here

      Tip:

      • 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 OR REPLACE HARNESS OR CONNECTOR

    OK

  73. CHECK IGNITION SYSTEM

    1. Perform ignition system On-vehicle inspection.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

    OK

  74. PERFORM ACTIVE TEST USING GTS (CONTROL THE FUEL PUMP/SPEED)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed.

      Powertrain > Engine and ECT > Active Test

      Tester Display

      Control the Fuel Pump / Speed

    5. 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

      NG

      A

      OK

      B
      Tip:

      • 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 76.

    B

    CHECK FUEL SYSTEMClick here

    A

  75. INSPECT FUEL PUMP

    1. Inspect the fuel pump.

      Click here

    Result

    Proceed to

    OK

    NG
    OK

    CHECK FUEL PUMP CONTROL CIRCUIT

    Click here

    NG

    REPLACE FUEL PUMP

    Click hereClick here

  76. CHECK FUEL SYSTEM

    1. Check the fuel system.

      • Check the fuel pump operation.

      • Check the fuel leaks.

      • Check the fuel pressure.

      • Perform the Active Test [Control the All Cylinder Fuel Cut].

      Tip:

      For the fuel system On-vehicle Inspection, refer to the following procedures.

      Click here

      Result

      Result

      Proceed to

      NG

      A

      OK

      B
    B

    CHECK FOR INTERMITTENT PROBLEMS

    Click here

    A

  77. CHECK FUEL SYSTEM

    1. Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter, fuel tank), and for signs that the fuel pump was stuck.

      Result

      Result

      Proceed to

      There is foreign matter or signs that fuel pump was stuck

      A

      There is no foreign matter and no signs that fuel pump was stuck

      B
      Tip:

      If there is foreign matter such as iron particles on the fuel pump, fuel filter or fuel tank, remove the foreign matter.

    A

    REPAIR OR REPLACE FUEL SYSTEM

    B

  78. CHECK FUEL SYSTEM

    1. Check the fuel system.

      • Check the fuel pump operation.

      • Check the fuel leaks.

      • Check the fuel pressure.

      • Perform the Active Test [Control the All Cylinder Fuel Cut].

      Tip:

      For the fuel system On-vehicle Inspection, refer to the following procedures.

      Click here

    Result

    Proceed to

    OK

    NG
    OK

    END

    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA