EASY AND SMOOTH START SYSTEM, Diagnostic DTC:P161F/46

DTC Code DTC Name
P161F/46 VCS Actuator Relay

DESCRIPTION

The VCS ACT relay manages the power supply for switches, etc. used by the electric vehicle control ECU. It reduces wasted current in situations such as if there is a malfunction in the electric vehicle control ECU assembly.

DTC No. Detection Condition Trouble Area
P161F/46 The VCS ACT relay is being driven but VCS ACT relay ON status cannot be detected (IG1D terminal voltage cannot be detected) for 5 seconds or more continuously.

  • VCS ACT relay (driver side junction block assembly)

  • Harness or connector

  • Electric vehicle control ECU assembly

WIRING DIAGRAM

A01CISKE01

INSPECTION PROCEDURE

Note


  • After replacing the electric vehicle control ECU assembly, perform clutch pedal stroke sensor assembly release position calibration Click here.

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

  • DTCs stored in the electric vehicle control ECU assembly are not cleared even after the system returns to a normal condition, so clear the DTCs after performing troubleshooting Click here.

PROCEDURE


  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Warm up the engine.

    2. Turn the ignition switch off.

    3. Replace the normal DLC3 cable (12 V specification) for the intelligent tester with the 24 V DLC3 cable.

      Note

      Be sure to use the 24 V DLC3 cable when connecting the intelligent tester to the DLC3. Using the normal DLC3 cable (12 V specification) will cause damage to the tester.

    4. Connect the intelligent tester to the DLC3.

    5. Turn the ignition switch to ON.

    6. Turn the intelligent tester on.

    7. Enter the following menus: Powertrain / Vehicle Control / Active Test.

    8. According to the display on the intelligent tester, perform the Active Test.

      Vehicle Control
      Tester Display Test Part Control Range Diagnostic Note
      Actuator Relay VCS ACT relay Relay ON / OFF

      Test is possible when the following conditions are met:


      • Engine stopped


      • Shift lever in N


      • Ignition switch is ON

    9. Check for operating sound of the VCS ACT relay when operating it with the intelligent tester.

      OK
      Actuator relay operates correctly (relay operating sound can be heard).

    NG

    CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - BODY GROUND) Click here

    OK

  2. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY


    1. Turn the ignition switch off.

    2. Disconnect the driver side junction block assembly connector.

    3. A01CIXAE01
      Text in Illustration
      *a

      Component without harness connected

      (Driver Side Junction Block Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      2C-44 - Body ground Ignition switch ON 20 to 28 V

    4. Reconnect the driver side junction block assembly connector.


    NG

    REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - ELECTRIC VEHICLE CONTROL ECU ASSEMBLY)


    1. Turn the ignition switch off.

    2. Disconnect the electric vehicle control ECU assembly connector.

    3. A01CIELE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (Electric Vehicle Control ECU Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      E43-3 (IG1D) - Body ground Ignition switch ON 20 to 28 V

    4. Reconnect the electric vehicle control ECU assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  5. CHECK FOR DTC


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    B

    REPLACE ELECTRIC VEHICLE CONTROL ECU ASSEMBLY Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  6. CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - BODY GROUND)


    1. Turn the ignition switch off.

    2. Disconnect the driver side junction block assembly connector.

    3. A01CH5XE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (Driver Side Junction Block Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      2A-4 - Body ground Always 20 to 28 V

    4. Reconnect the driver side junction block assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY


    1. Turn the ignition switch off.

    2. Disconnect the driver side junction block assembly connector.

    3. A01CH0JE01
      Text in Illustration
      *a

      Component without harness connected

      (Driver Side Junction Block Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      2D-28 - Body ground 15 seconds or more after ignition switch off 20 to 28 V

    4. Reconnect the driver side junction block assembly connector.


    NG

    REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY Click here

    OK

  8. CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK ASSEMBLY - ELECTRIC VEHICLE CONTROL ECU ASSEMBLY)


    1. Turn the ignition switch off.

    2. Disconnect the electric vehicle control ECU assembly connector.

    3. A01CIZWE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (Electric Vehicle Control ECU Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      E41-10 (1G2D) - Body ground 15 seconds or more after ignition switch off 20 to 28 V

    4. Reconnect the electric vehicle control ECU assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. CHECK ELECTRIC VEHICLE CONTROL ECU ASSEMBLY


    1. A01CIQ4E01
      Text in Illustration
      *a

      Component with harness connected

      (to Electric Vehicle Control ECU Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      E41-10 (IG2D) - Body ground Ignition switch ON Below 1 V

    NG

    REPLACE ELECTRIC VEHICLE CONTROL ECU ASSEMBLY Click here

    OK

  10. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  11. CHECK FOR DTC


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    B

    REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY Click here

    A

    USE SIMULATION METHOD TO CHECK Click here