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SFI SYSTEM, Diagnostic DTC:P1603, P1605

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DTC Code DTC Name
P1603 Engine Stall History
P1605 Rough Idling
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DESCRIPTION

P1603

After starting the engine, this DTC is stored when the engine stops without the ignition switch being operated.

Using the intelligent tester, 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. DTC Detection Condition Trouble Area
P1603 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).

  • Air leak in intake system

  • Purge VSV

  • Mass air flow meter

  • Engine coolant temperature sensor

  • Thermostat

  • Power supply circuit (purge VSV, air fuel ratio sensor, fuel injector assembly, ignition coil assembly)

  • Fuel pump

  • Fuel pump control circuit

  • Fuel line

  • PCV valve and hose

  • Camshaft timing oil control valve

  • Knock sensor

  • Ignition system

  • Air conditioning system

  • Power steering system

  • Electrical load signal system

  • Charging system

  • A/T system

  • Park/neutral position switch assembly

  • ECM

  • Wire harness or connector

  • Immobiliser system
P1605

This DTC is stored if the engine speed drops below the set speed without the ignition switch being operated.

Using the intelligent tester, 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. DTC Detection Condition Trouble Area
P1605 After 5 seconds or more elapse after starting the engine, with the engine running, the engine speed drops to 400 rpm or less without the ignition switch being operated (1 trip detection logic).

  • Air leak in intake system

  • Purge VSV

  • Mass air flow meter

  • Engine coolant temperature sensor

  • Thermostat

  • Power supply circuit (purge VSV, air fuel ratio sensor, fuel injector assembly, ignition coil assembly)

  • Fuel pump

  • Fuel pump control circuit

  • Fuel line

  • PCV valve and hose

  • Camshaft timing oil control valve

  • Knock sensor

  • Ignition system

  • Air conditioning system

  • Power steering system

  • Electrical load signal system

  • Charging system

  • A/T system

  • Park/neutral position switch assembly

  • ECM

  • Wire harness or connector

  • Immobiliser system
A01DT4QE01
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INSPECTION PROCEDURE

Tip:

  • 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 intelligent tester. 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 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.

  • 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 lever in D or N) 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:


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

  • Power supply circuit

  • Ignition coil assemblies

  • Spark plug

 7, 35, 49
Air-fuel ratio abnormal Air suction

  • Intake system connections

  • Purge VSV system

 5, 6
Sensor malfunction (value from sensor too lean)

  • Mass air flow meter

  • Engine coolant temperature sensor

  • Air fuel ratio sensor system

  • Thermostat

 8 to 20
Sensor malfunction (value from sensor too rich) 36 to 48
Fuel supply problem

  • Fuel pump control circuit

  • Purge VSV system

  • Fuel line

  • ECM

 21 to 34
Intake air volume insufficient Problem with air passage

  • Intake system connections

  • Mass air flow meter

  • PCV valve and hose

  • Purge VSV system

 50 to 52
Excessive valve overlap

  • Camshaft timing oil control valve

 53 to 56
Ignition timing incorrect Does not operate as expected

  • Knock sensor

  • Engine coolant temperature sensor

  • Mass air flow meter

 57 to 61
Rapidly decreases and engine stalls Ignition and injection stops (electrical system malfunction) Power temporarily cut

  • Power supply circuit (fuel injector assembly, ignition coil assembly)

 62, 63
External part malfunctioning Increase in load

  • Air conditioning system

  • Electrical load signal system

  • Power steering system

  • A/T system

  • Park/neutral position switch assembly

 64 to 67
Accelerating - Crankshaft position sensor or VVT sensor malfunction Power temporarily cut

  • Check DTCs

 1
Mass air flow meter Foreign matter adhesion

  • Mass air flow meter

 68 to 71
Ignition and injection stops (electrical system malfunction) Power temporarily cut

  • Power supply circuit (fuel injector assembly, ignition coil assembly)

 72, 73
Fuel supply problem Fuel leak, clog

  • Fuel pump control circuit

  • Fuel line

 74 to 78
P1605:

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 and engine stalls Ignition system abnormal Igniter abnormal

  • Power supply circuit

  • Ignition coil assemblies

  • Spark plug

 7, 35, 49
Air-fuel ratio abnormal Air suction

  • Intake system connections

  • Purge VSV system

 5, 6
Sensor malfunction (value from sensor too lean)

  • Mass air flow meter

  • Engine coolant temperature sensor

  • Air fuel ratio sensor system

  • Thermostat

 8 to 20
Sensor malfunction (value from sensor too rich) 36 to 48
Fuel supply problem

  • Fuel pump control circuit

  • Purge VSV system

  • Fuel line

  • ECM

 21 to 34
Intake air volume insufficient Problem with air passage

  • Intake system connections

  • Mass air flow meter

  • PCV valve and hose

  • Purge VSV system

 50 to 52
Excessive valve overlap

  • Camshaft timing oil control valve

 53 to 56
Ignition timing incorrect Does not operate as expected

  • Knock sensor

  • Engine coolant temperature sensor

  • Mass air flow meter

 57 to 61
Rapidly decreases and engine stalls Ignition and injection stops (electrical system malfunction) Power temporarily cut

  • Power supply circuit (fuel injector assembly, ignition coil assembly)

 62, 63
External part malfunctioning Increase in load

  • Air conditioning system

  • Electrical load signal system

  • Power steering system

  • A/T system

  • Park/neutral position switch assembly

 64 to 67
Note:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

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PROCEDURE


  1. Click here

    CHECK FOR ANY OTHER DTCS OUTPUT


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Read the DTCs (Click here).

      Table 1. Result
      Result Proceed to
      Only DTC P1603 and/or P1605 is output A
      DTCs other than P1603 and/or P1605 are output B
      Tip:

      If any DTCs other than P1603 or P1605 are output, troubleshoot those DTCs first.


  2. Click here

    CHECK FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Using the intelligent tester, 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.
      Table 2. Result
      Result Proceed to
      Abnormal A
      Normal B

  3. Click here

    CHECK ENGINE IMMOBILISER SYSTEM


    1. Connect the intelligent tester to the DLC3.

    2. Start the engine.

    3. Idle the engine

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Immobiliser Communication and Immobiliser Fuel Cut.

    5. Check the Data List indication.

      Table 3. OK
      Data List Item Result
      Immobiliser Communication ON
      Immobiliser Fuel Cut OFF
      Table 4. Result
      Result Proceed to
      OK A
      NG (w/ Entry and Start System) B
      NG (w/o Entry and Start System) C

  4. Click here

    READ FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. A01DRI2E01

      Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

      Table 5. Result
      Problem Symptom Freeze Frame Data Item for DTC P1605 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, engine stalls*4 At least one is OFF - -

      • Sensor malfunction


      • Injection stoppage, ignition stoppage


      • Fuel supply problem

      		 E
      Tip:

      • *1: A rapid decrease in engine speed may be caused by an electrical fault in the shared wiring of all or a number of 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.


        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.


      • If the vehicle speed is 30 km/h or less and the difference between Engine Speed and SPD (NT) is 100 rpm or less, inspect the automatic transmission. (Depending on the rate of vehicle deceleration, the engine speed may have decreased due to the A/T lock-up release being late.)

      • *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.


  5. Click here

    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 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 leakage may be present.

      OK
      There is no air leakage.

  6. Click here

    CHECK PURGE VSV


    1. A01DRBI

      Disconnect the purge hose (on the 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.

    6. Connect the connector of the purge VSV.

    7. Connect the purge hose of the purge VSV.

      Tip:

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


  7. Click here

    CHECK IGNITION SYSTEM


    1. Perform ignition system On-vehicle Inspection (Click here).


  8. Click here

    READ FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

      Table 6. 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 A

      AFS Voltage B1S1

      AFS Voltage B2S1

      		 3.3 V or higher*2

      • Air fuel ratio sensor

      • Wire harness or connector

      		 B
      Tip:

      • *1: If the Mass air flow meter 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 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.


  9. Click here

    CHECK MASS AIR FLOW METER


    1. Remove the Mass air flow meter.

    2. Check for foreign matter in the airflow passage of the mass airflow meter.

      Table 7. Result
      Result Proceed to
      Visible foreign matter is not present A
      Visible foreign matter is present B

  10. Click here

    CHECK HARNESS AND CONNECTOR (ECM - MASS AIR FLOW METER)


    1. Check the harnesses and connectors, referring to DTC P0102 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.


  11. Click here

    PERFORM DRIVE TEST


    1. Connect the intelligent tester 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. Using the intelligent tester, read the value of Calculate Load in the Data List.

      Standard
      Data List Specified Condition
      Calculate Load 90 to 110% of the current value of the vehicle
      Table 8. Result
      Result Proceed to
      Abnormal A
      Normal B

  12. Click here

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)


    1. A01DN9DE27

      Connect the intelligent tester 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. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor.

    6. Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume.

      Standard
      Tester 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
      Table 9. Result
      Result Proceed to
      Abnormal A
      Normal B
      Tip:

      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.


  13. Click here

    CHECK TERMINAL VOLTAGE (AIR FUEL RATIO SENSOR POWER SOURCE)


    1. Check the harnesses and connectors, referring to DTC P0031 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.


  14. Click here

    CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM)


    1. Check the harnesses and connectors, referring to DTC P2237 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.


  15. Click here

    READ FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

      Table 10. 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*1 A
      Difference in temperature between each item is 10°C 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.


  16. Click here

    READ FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. A01DPUTE01

      Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

      Table 11. 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
      Tip:

      This step is not directly related to engine stall.


  17. Click here

    INSPECT THERMOSTAT

    Tip:

    For the thermostat inspection, refer to the following procedures (Click here).

    Table 12. Result
    Result Proceed to
    Abnormal A
    Normal B

  18. Click here

    READ FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

      Table 13. Result
      Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to
      Coolant Temp 120°C or higher Engine coolant temperature sensor A
      Coolant Temp, Ambient Temp for A/C Engine coolant temperature is lower than outside temperature by 15°C or more Engine coolant temperature sensor
      Both freeze frame data items listed above Values are other than above - B

  19. Click here

    INSPECT ENGINE COOLANT TEMPERATURE SENSOR

    Tip:

    For the engine coolant temperature sensor inspection, refer to the following procedures (Click here).

    Table 14. Result
    Result Proceed to
    Normal A
    Abnormal B

  20. Click here

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


    1. Check the harnesses and connectors, referring to DTC P0115 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.


  21. Click here

    READ FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

      Table 15. 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
      Tip:

      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.


  22. Click here

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (ACTIVATE THE VSV FOR EVAP CONTROL)


    1. A01DOMFE01

      Disconnect the purge hose (on the canister side) of the purge VSV.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the ignition switch to ON.

    4. Start the engine.

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

    6. Operate the purge VSV and check the airflow.

      OK
      Activate the VSV for Evap Control Specified Condition
      ON Air flows
      OFF Air does not flow
      Table 16. 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.


  23. Click here

    INSPECT PURGE VSV


    1. Inspect the purge VSV (Click here).


  24. Click here

    CHECK TERMINAL VOLTAGE (PURGE VSV POWER SOURCE)


    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.


  25. Click here

    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.


  26. Click here

    CLEAR DTC


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Clear the DTCs (Click here).


  27. Click here

    READ VALUE USING INTELLIGENT TESTER (EVAP (Purge) VSV)


    1. Connect the intelligent tester 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. Using the intelligent tester, read the value of EVAP (Purge) VSV in the Data List.

      Standard
      Data List Specified Condition
      EVAP (Purge) VSV Value other than 0% is displayed
      Table 17. Result
      Result Proceed to
      Abnormal A
      Normal B

  28. Click here

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. A01DOMFE01

      Disconnect the purge hose (on the canister side) of the purge VSV.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the ignition switch to ON.

    4. Start the engine.

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

    6. Operate the purge VSV and check the airflow.

      OK
      Activate the VSV for Evap Control Specified Condition
      ON Air flows
      OFF Air does not flow
      Table 18. 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.


  29. Click here

    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.


  30. Click here

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (CONTROL THE FUEL PUMP / SPEED)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

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

    5. When performing the Active Test, check for an operating sound from the fuel pump.

      Standard
      Control the Fuel Pump / Speed Specified Condition
      ON Operating sound heard
      OFF Operating sound not heard
      Table 19. Result
      Result Proceed to
      Abnormal A
      Normal 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 31.


  31. Click here

    INSPECT FUEL PUMP


    1. Inspect the fuel pump (for Single Tank Type) (Click here).

    2. Inspect the fuel pump (for Double Tank Type) (Click here).

      Table 20. Result
      Result Proceed to
      OK A
      NG (for Single Tank Type) B
      NG (for Double Tank Type) C

  32. Click here

    CHECK FUEL SYSTEM


    1. Check the fuel system.


      • Check the fuel pump operation.

      • Check for fuel leaks.

      • Check the fuel pressure.

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

      Tip:

      For the fuel system On-vehicle Inspection, refer to the following procedures (Click here).

      Table 21. Result
      Result Proceed to
      Abnormal A
      Normal B

  33. Click here

    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.

      Table 22. 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.


  34. Click here

    CHECK FUEL SYSTEM


    1. Check the fuel system.


      • Check the fuel pump operation.

      • Check for fuel leaks.

      • Check the fuel pressure.

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

      Tip:

      For the fuel system On-vehicle Inspection, refer to the following procedures (Click here).


  35. Click here

    CHECK IGNITION SYSTEM


    1. Perform ignition system On-vehicle Inspection (Click here).


  36. Click here

    READ FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

      Table 23. 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 A

      AFS Voltage B1S1

      AFS Voltage B2S1

      		 Below 3.3 V*2

      • Air fuel ratio sensor

      • Harness and connector

      		 B
      Both freeze frame data items listed above Values are other than above - C
      Tip:

      • *1: If the Mass air flow meter 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.


  37. Click here

    CHECK MASS AIR FLOW METER


    1. Remove the mass airflow meter.

    2. Check for foreign matter in the airflow passage of the Mass air flow meter.

      Table 24. Result
      Result Proceed to
      Visible foreign matter is not present A
      Visible foreign matter is present B

  38. Click here

    CHECK HARNESS AND CONNECTOR (ECM - MASS AIR FLOW METER)


    1. Check the harnesses and connectors, referring to DTC P0102 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.


  39. Click here

    PERFORM DRIVE TEST


    1. Connect the intelligent tester 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. Using the intelligent tester, read the value of Calculate Load in the Data List.

      Standard
      Data List Specified Condition
      Calculate Load 90 to 110% of the current value of the vehicle

  40. Click here

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (CONTROL THE INJECTION VOLUME FOR A/F SENSOR)


    1. A01DN9DE27

      Connect the intelligent tester 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. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor.

    6. Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume.

      Standard
      Tester 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
      Table 25. Result
      Result Proceed to
      Abnormal A
      Normal B
      Tip:

      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.


  41. Click here

    CHECK TERMINAL VOLTAGE (AIR FUEL RATIO SENSOR POWER SOURCE)


    1. Check the harnesses and connectors, referring to DTC P0031 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.


  42. Click here

    CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM)


    1. Check the harnesses and connectors, referring to DTC P2237 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.


  43. Click here

    READ FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

      Table 26. 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*1 A
      Difference in temperature between each item is 10°C 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.


  44. Click here

    READ FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. A01DPUTE01

      Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

      Table 27. 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
      Tip:

      This step is not directly related to engine stall.


  45. Click here

    INSPECT THERMOSTAT

    Tip:

    For the thermostat inspection, refer to the following procedures (Click here).

    Table 28. Result
    Result Proceed to
    Abnormal A
    Normal B
    Tip:

    This step is not directly related to engine stall.


  46. Click here

    READ FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

      Table 29. Result
      Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to
      Coolant Temp 120°C or higher Engine coolant temperature sensor A
      Coolant Temp, Ambient Temp for A/C Engine coolant temperature is lower than outside temperature by 15°C or more Engine coolant temperature sensor
      Both freeze frame data items listed above Values are other than above - B

  47. Click here

    INSPECT ENGINE COOLANT TEMPERATURE SENSOR

    Tip:

    For the engine coolant temperature sensor inspection, refer to the following procedures (Click here).

    Table 30. Result
    Result Proceed to
    Normal A
    Abnormal B

  48. Click here

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


    1. Check the harnesses and connectors, referring to DTC P0115 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.


  49. Click here

    CHECK IGNITION SYSTEM


    1. Perform ignition system On-vehicle Inspection (Click here).


  50. Click here

    READ FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

      Table 31. 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 more of the current value of the vehicle B

  51. Click here

    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 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 leakage may be present.

      OK
      There is no air leakage.

  52. Click here

    CHECK INTAKE SYSTEM


    1. Check the intake system.


      • Inspect the brake booster assembly.

      • Inspect the Mass air flow meter.

      • Check the PCV hose.

      • Inspect the PCV valve.

      • Inspect the purge VSV.

      Table 32. Result
      Result Proceed to
      Abnormal A
      Normal B

  53. Click here

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (CONTROL THE VVT LINEAR)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the intelligent tester on.

    3. Warm up the engine.

    4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank1) or Control the VVT Linear (Bank2).

      Tip:

      When performing the Active Test, make sure the A/C is on and the shift lever is in P or N.

    5. Check the engine speed while operating the camshaft timing oil control valve using the intelligent tester.

      OK
      Tester Operation Specified Condition
      0% Normal engine speed
      100% Engine idles roughly or stalls
      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 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.


  54. Click here

    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.


  55. Click here

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (CONTROL THE VVT EXHAUST LINEAR)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the intelligent tester on.

    3. Warm up the engine.

    4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Exhaust Linear (Bank1) or Control the VVT Exhaust Linear (Bank2).

      Tip:

      When performing the Active Test, make sure the A/C is on and the shift lever is in P or N.

    5. Check the engine speed while operating the camshaft timing oil control valve using the intelligent tester.

      OK
      Tester Operation Specified Condition
      0% Normal engine speed
      100% Engine idles roughly or stalls
      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 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.


  56. Click here

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


    1. Check the harnesses and connectors, referring to DTC P0013 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.


  57. Click here

    READ FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

      Table 33. 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° or more Less than 3°

      • Engine coolant temperature sensor

      • Mass air flow meter

      • Knock sensor

      		 A
      3° or more - B
      Differs from the current value of the vehicle by less than 10° - -

  58. Click here

    INSPECT ENGINE COOLANT TEMPERATURE SENSOR

    Tip:

    For the engine coolant temperature sensor inspection, refer to the following procedures (Click here).


  59. Click here

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


    1. Check the harnesses and connectors, referring to DTC P0115 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.


  60. Click here

    INSPECT MASS AIR FLOW METER (INTAKE AIR TEMPERATURE SENSOR)


    1. Inspect the Mass air flow meter (Click here).

      Tip:

      If the intake air temperature sent to the ECM is higher than the standard due to the Mass air flow meter (intake air temperature sensor) malfunctioning, the ignition timing may become delayed.


  61. Click here

    READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester 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. Using the intelligent tester, read the value of IGN Advance and Knock Correct Learn Value in the Data List.

      Table 34. Result
      Freeze Frame Data Item for DTC P1605 Proceed to
      IGN Advance Knock Correct Learn Value
      Differs from the current value of the vehicle by 10° or more Less than 3° A
      3° or more B
      Differs from the current value of the vehicle by less than 10° -
      Tip:

      If the results of the checks performed in steps 56 to 64 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.


  62. Click here

    INSPECT TERMINAL VOLTAGE (FUEL INJECTOR POWER SOURCE)


    1. Check the harnesses and connectors, referring to DTC P0300 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.


  63. Click here

    CHECK IGNITION SYSTEM


    1. Perform ignition system On-vehicle Inspection (Click here).


  64. Click here

    CHECK FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

      Table 35. 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 displayed for Air Conditioner FB Val increases - A/C system B
      Value displayed for Air Conditioner FB Val does not increase Does not change from OFF -

      A*1

      C*2
      Changes from OFF to ON Power steering system
      A/C Signal display does not change from OFF - Changes from OFF to ON
      Does not change from OFF -

      • *1: for A/T

      • *2: for M/T

      Tip:

      • *1: Check not only the on/off state of the air conditioner but also the change in air conditioner load.

      • 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 and/or A/C system may have been malfunctioning. If there are no problems with other parts, inspect the power steering system and/or A/C system.


  65. Click here

    CHECK FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

      Table 36. Result
      Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to
      Electrical Load Signal or Electric Load Feedback Val Electric Load Feedback Val Difference between Engine Speed and SPD (NT) Vehicle Speed
      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 Val changes - - Electrical load signal circuit C
      Value displayed for Electric Load Val does not change At least 1 of the 5 sets of freeze frame data is less than 100 rpm Less than 30 km/h A/T system B
      30 km/h or more - A
      All 5 sets of freeze frame data are 100 rpm or more - - A
      Electrical Load Signal 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 30 km/h A/T system B
      30 km/h or more - A
      All 5 sets of freeze frame data are 100 rpm or more - - A
      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 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 and/or A/T system may have been malfunctioning. If there are no problems with other parts, inspect the electrical load system and/or A/T system.


  66. Click here

    CHECK FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

      Table 37. 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 In D or R, NSW is ON Park/neutral position switch assembly A
      In D or R, NSW is OFF A/T system B
      All 5 sets of freeze frame data are ON - - C
      Tip:

      Even if the results are normal, the park/neutral position switch assembly and/or A/T system may have been malfunctioning. If there are no problems with other parts, inspect the park/neutral position switch assembly and/or A/T system.


  67. Click here

    CHECK FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

      Table 38. Result
      Freeze Frame Data Item for DTC P1605 Proceed to
      Electrical Load Signal or Electric Load Feedback Val Electric Load Feedback Val
      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 Val changes A
      Value displayed for Electric Load Val does not change B
      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 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.


  68. Click here

    CHECK FREEZE FRAME DATA


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).

      Table 39. 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 A
      Calculate Load does not decrease while Throttle Sensor Position increases - B

  69. Click here

    CHECK MASS AIR FLOW METER


    1. Remove the Mass air flow meter (Click here).

    2. Check for foreign matter in the airflow passage of the mass airflow meter.

      Table 40. Result
      Result Proceed to
      Visible foreign matter is not present A
      Visible foreign matter is present B

  70. Click here

    CHECK HARNESS AND CONNECTOR (ECM - MASS AIR FLOW METER)


    1. Check the harnesses and connectors, referring to DTC P0102 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.


  71. Click here

    PERFORM DRIVE TEST


    1. Connect the intelligent tester 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. Using the intelligent tester, read the value of Calculate Load in the Data List.

      Standard
      Data List Specified Condition
      Calculate Load 90 to 110% of the current value of the vehicle

  72. Click here

    INSPECT TERMINAL VOLTAGE (FUEL INJECTOR POWER SOURCE)


    1. Check the harnesses and connectors, referring to DTC P0300 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.


  73. Click here

    CHECK IGNITION SYSTEM


    1. Perform ignition system On-vehicle Inspection (Click here).


  74. Click here

    PERFORM ACTIVE TEST USING INTELLIGENT TESTER (CONTROL THE FUEL PUMP / SPEED)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

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

    5. When performing the Active Test, check for an operating sound from the fuel pump.

      Standard
      Control the Fuel Pump / Speed Specified Condition
      ON Operating sound heard
      OFF Operating sound not heard
      Table 41. Result
      Result Proceed to
      Abnormal A
      Normal 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 75.


  75. Click here

    INSPECT FUEL PUMP


    1. Inspect the fuel pump (for Single Tank Type) (Click here).

    2. Inspect the fuel pump (for Double Tank Type) (Click here).

      Table 42. Result
      Result Proceed to
      OK A
      NG (for Single Tank Type) B
      NG (for Double Tank Type) C

  76. Click here

    CHECK FUEL SYSTEM


    1. Check the fuel system.


      • Check the fuel pump operation.

      • Check for fuel leaks.

      • Check the fuel pressure.

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

      Tip:

      For the fuel system On-vehicle Inspection, refer to the following procedures (Click here).

      Table 43. Result
      Result Proceed to
      Abnormal A
      Normal B

  77. Click here

    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.

      Table 44. 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.


  78. Click here

    CHECK FUEL SYSTEM


    1. Check the fuel system.


      • Check the fuel pump operation.

      • Check for fuel leaks.

      • Check the fuel pressure.

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

      Tip:

      For the fuel system On-vehicle Inspection, refer to the following procedures (Click here).


  79. Click here

    CLEAR DTC


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Clear the DTCs (Click here).


  80. Click here

    GO TO DTC CHARTClick here

  81. Click here

    CHECK ENGINE IMMOBILISER SYSTEM (W/ ENTRY AND START SYSTEM)Click here

  82. Click here

    REPAIR OR REPLACE INTAKE SYSTEM

  83. Click here

    REPLACE PURGE VSVClick here

  84. Click here

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

  85. Click here

    REPLACE MASS AIR FLOW METERClick here

  86. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  87. Click here

    REPAIR AIR FUEL RATIO SENSOR POWER SOURCE CIRCUITClick here

  88. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  89. Click here

    REPLACE ENGINE COOLANT TEMPERATURE SENSORClick here

  90. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  91. Click here

    REPLACE PURGE VSVClick here

  92. Click here

    REPAIR PURGE VSV POWER SOURCE CIRCUITClick here

  93. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  94. Click here

    CHECK FOR INTERMITTENT PROBLEMSClick here

  95. Click here

    CHECK FOR INTERMITTENT PROBLEMSClick here

  96. Click here

    RECONNECT CONNECTOR CORRECTLY

  97. Click here

    REPLACE FUEL PUMP (FOR SINGLE TANK TYPE)Click here

  98. Click here

    CHECK FOR INTERMITTENT PROBLEMSClick here

  99. Click here

    REPAIR OR REPLACE FUEL SYSTEM

  100. Click here

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

  101. Click here

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

  102. Click here

    REPLACE MASS AIR FLOW METERClick here

  103. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  104. Click here

    REPLACE MASS AIR FLOW METERClick here

  105. Click here

    REPAIR AIR FUEL RATIO SENSOR POWER SOURCE CIRCUITClick here

  106. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  107. Click here

    REPLACE ENGINE COOLANT TEMPERATURE SENSORClick here

  108. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  109. Click here

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

  110. Click here

    REPAIR OR REPLACE INTAKE SYSTEM

  111. Click here

    REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLYClick here

  112. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  113. Click here

    REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLYClick here

  114. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  115. Click here

    CHECK FOR INTERMITTENT PROBLEMSClick here

  116. Click here

    REPLACE ENGINE COOLANT TEMPERATURE SENSORClick here

  117. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  118. Click here

    REPLACE MASS AIR FLOW METERClick here

  119. Click here

    END

  120. Click here

    REPAIR FUEL INJECTOR CIRCUITClick here

  121. Click here

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

  122. Click here

    CHECK AIR CONDITIONING SYSTEM

  123. Click here

    CHECK AUTOMATIC TRANSMISSION SYSTEM

  124. Click here

    CHECK GENERATOR CIRCUITClick here

  125. Click here

    CHECK AUTOMATIC TRANSMISSION SYSTEM

  126. Click here

    CHECK FOR INTERMITTENT PROBLEMSClick here

  127. Click here

    REPLACE MASS AIR FLOW METERClick here

  128. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  129. Click here

    REPLACE MASS AIR FLOW METERClick here

  130. Click here

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

  131. Click here

    REPLACE FUEL PUMP (FOR SINGLE TANK TYPE)Click here

  132. Click here

    CHECK FOR INTERMITTENT PROBLEMSClick here

  133. Click here

    REPAIR OR REPLACE FUEL SYSTEM

  134. Click here

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

  135. Click here

    REPLACE MASS AIR FLOW METERClick here

  136. Click here

    REPLACE THERMOSTATClick here

  137. Click here

    REPLACE ECMClick here

  138. Click here

    CHECK FUEL PUMP CONTROL CIRCUITClick here

  139. Click here

    END

  140. Click here

    REPLACE THERMOSTATClick here

  141. Click here

    CHECK FOR INTERMITTENT PROBLEMSClick here

  142. Click here

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

  143. Click here

    CHECK KNOCK SENSOR CIRCUITClick here

  144. Click here

    INSPECT PARK/NEUTRAL POSITION SWITCH

  145. Click here

    CHECK FUEL PUMP CONTROL CIRCUITClick here

  146. Click here

    END

  147. Click here

    END

  148. Click here

    CHECK ENGINE IMMOBILISER SYSTEM (W/O ENTRY AND START SYSTEM)Click here

  149. Click here

    REPLACE FUEL PUMP (FOR DOUBLE TANK TYPE)Click here