SFI SYSTEM(w/ Canister Pump Module), Diagnostic DTC:P1652, P1655

DTC Code DTC Name
P1652 Lost Communication with Exhaust Exterior Valve 1
P1655 Lost Communication with Exhaust Exterior Valve 2

DESCRIPTION

Refer to DTC P1651.

Click here

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P1652 Lost Communication with Exhaust Exterior Valve 1 Lost communication with ECM and exhaust change valve driver for 3 seconds (1trip detection logic).

  • No. 1 exhaust change valve driver

  • Wire harness or connector

  • ECM

 Does not come on DTC stored
P1655 Lost Communication with Exhaust Exterior Valve 2 Lost communication with ECM and exhaust change valve driver for 3 seconds (1trip detection logic).

  • No. 2 exhaust change valve driver

  • Wire harness or connector

  • ECM

 Does not come on DTC stored

MONITOR DESCRIPTION

The ECM stores a DTC if a communication malfunction occurs between the ECM and exhaust change valve driver.

CONFIRMATION DRIVING PATTERN


  1. Connect the GTS to the DLC3.

  2. Turn the engine switch on (IG).

  3. Turn the GTS on.

  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  5. Turn the engine switch off and wait for at least 30 seconds.

  6. Turn the engine switch on (IG).

  7. Wait 10 seconds or more.

  8. Turn the GTS on.

  9. Enter the following menus: Powertrain / Engine / Trouble Codes.

  10. Read the pending DTCs.

    Tech Tips


    • If a pending DTC is output, the system is malfunctioning.

    • If a pending DTC is not output, perform the following procedure.

  11. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

  12. Input the DTC: P1652 or P1655.

  13. Check the DTC judgment result.

    GTS Display Description
    NORMAL

    • DTC judgment completed

    • System normal
    ABNORMAL

    • DTC judgment completed

    • System abnormal
    INCOMPLETE

    • DTC judgment not completed

    • Perform driving pattern after confirming DTC enabling conditions
    N/A

    • Unable to perform DTC judgment

    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform steps [F] through [H].

WIRING DIAGRAM

Refer to DTC P1651.

Click here

CAUTION / NOTICE / HINT

CAUTION:

Do no perform the Active Test with the exhaust pipe gas control actuator sub-assembly removed.

Tech Tips


  • Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

  • If DTC P1652 is output, check the white wires with protective coating on the exhaust pipe gas control actuator sub-assembly wiring system.

  • If DTC P1655 is output, check the black wires with protective coating on the exhaust pipe gas control actuator sub-assembly wiring system.

  • The connector for the exhaust pipe gas control actuator sub-assembly can be connected on either the left or right side.

    When installing the wire harness after performing repairs, install it at the specified position.

    Click here

  • Connect the No. 1 exhaust change valve driver to the No. 1 exhaust pipe gas control actuator sub-assembly connected to the white wires with protective coating

  • Connect the No. 2 exhaust change valve driver to the No. 2 exhaust pipe gas control actuator sub-assembly connected to the black wires with protective coating.

  • During troubleshooting, refer to the illustration below to check the colors of the profective coating of the exhaust pipe gas control actuator sub-assembly wire harness.

    B000X2PC04
    *a No. 1 exhaust change valve driver *b No. 2 exhaust change valve driver
    *c Wire harness (white or black wires with protective coating) *d

    Exhaust pipe gas control actuator sub-assembly

    (No. 1: white wires with protective coating)

    (No. 2: black wires with protective coating)

PROCEDURE


  1. CHECK DTC OUTPUT (DTC P1652 AND P1655)


    1. Connect the GTS to the DLC3

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Trouble Codes.


      Powertrain > Engine > Trouble Codes

    5. Read the DTCs.

      Result
      Result Proceed to
      DTC P1652 or P1655 is output A
      DTC P1652 and P1655 are output simultaneously B

    B

    GO TO STEP 5 Click here

    A

  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF EXHAUST CHANGE VALVE DRIVER)


    1. B000Z23C02
      *a

      Front view of wire harness connector

      (to Exhaust change valve driver)
      *b No. 1
      *c No. 2

      Disconnect the exhaust valve control driver connector.

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      X80-8(+B) - Body ground Engine switch on (IG) 11 to 14 V
      X81-8(+B) - Body ground Engine switch on (IG) 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (EXHAUST CHANGE VALVE DRIVER - EFI NO. 5/BBC-IG1 RELAY) Click here

    OK

  3. CHECK EXHAUST CHANGE VALVE DRIVER


    1. Switch connector X80 and X81 on the exhaust change valve driver.

      Tech Tips

      The wire harnesses are different lengths. Therefore, remove the exhaust change valve driver and change the position of the connnector.

    2. Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

    3. Enter the following menus: Powertrain / Engine / Trouble Codes.


      Powertrain > Engine > Trouble Codes

    4. Read the pending DTCs.

      Result
      Result Proceed to
      DTCs do not change A
      DTCs change B

    B

    REPLACE EXHAUST CHANGE VALVE DRIVER Click here

    A

  4. CHECK HARNESS AND CONNECTOR (EXHAUST CHANGE VALVE DRIVER - ECM, BODY GROUND)


    1. Disconnect the exhaust change valve driver 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
      A58-34(EXVI) - X80-4(EXVI) Always Below 1 Ω
      A58-6(EXVO) - X80-9(EXVO) Always Below 1 Ω
      A58-35(EXI2) - X81-4(EXI2) Always Below 1 Ω
      A58-19(EXO2) - X81-9(EXO2) Always Below 1 Ω
      X80-6(GND) - Body ground Always Below 1 Ω
      X81-6(GND) - Body ground Always Below 1 Ω
      A58-34(EXVI) or X80-4(EXVI) - Body ground and other terminals Always 10 kΩ or higher
      A58-6(EXVO) or X80-9(EXVO) - Body ground and other terminals Always 10 kΩ or higher
      A58-35(EXI2) or X81-4(EXI2) - Body ground and other terminals Always 10 kΩ or higher
      A58-19(EXO2) or X81-9(EXO2) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ECM Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. CHECK HARNESS AND CONNECTOR (EXHAUST CHANGE VALVE DRIVER - EFI NO. 5/BBC-IG1 RELAY)


    1. Disconnect the exhaust change valve driver connector.

    2. Remove the EFI NO. 5/BBC-IG1 relay from the No. 2 luggage room relay block and junction block assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      X80-8(+B) - 3(EFI NO. 5/BBC-IG1 relay holder) Always Below 1 Ω
      X81-8(+B) - 3(EFI NO. 5/BBC-IG1 relay holder) Always Below 1 Ω
      X80-8(+B) or 3(EFI NO. 5/BBC-IG1 relay holder) - Body ground and other terminals Always 10 kΩ or higher
      X81-8(+B) or 3(EFI NO. 5/BBC-IG1 relay holder) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT EFI NO. 5/BBC-IG1 RELAY


    1. Inspect the EFI NO. 5/BBC-IG1 relay.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE EFI NO. 5/BBC-IG1 RELAY

    OK

  7. CHECK HARNESS AND CONNECTOR (EFI NO. 5/BBC-IG1 RELAY - ECM, BODY GROUND)


    1. Remove the EFI NO. 5/BBC-IG1 relay and EFI-MAIN NO. 2 relay from the No. 2 luggage room relay block and junction block assembly.

    2. Disconnect the ECM connector.

    3. Remove the EFI-MAIN NO. 1 relay from No. 1 engine room relay block and junction block assembly.

      Tech Tips

      Remove the EFI-MAIN NO. 1 relay and EFI-MAIN NO. 2 relay connected between the checked terminals as the coil inside the relay influences the measurement value.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1(EFI NO. 5/BBC-IG1 relay holder) - A58-46 (MREL) Always Below 1 Ω
      2(EFI NO. 5/BBC-IG1 relay holder) - Body ground Always Below 1 Ω
      3(EFI NO. 5/BBC-IG1 relay holder) or A58-46 (MREL) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - EFI NO. 5/BBC-IG1 RELAY)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR