LIGHTING SYSTEM Back-up Light Circuit

DESCRIPTION

The power management control ECU controls the back-up lights via the BKUP LP relay.

WIRING DIAGRAM

A01MFR6E01

PROCEDURE


  1. CHECK FOR DTC (HYBRID CONTROL SYSTEM)


    1. Clear the DTCs.

      Click here


      Powertrain > EV > Clear DTCs

    2. Check for DTCs.

      Click here


      Powertrain > EV > Trouble Codes
      Result
      Result Proceed to
      Hybrid control system DTCs are not output. A
      Hybrid control system DTCs are output. B

    B

    GO TO HYBRID CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - POWER MANAGEMENT CONTROL ECU)


    1. Disconnect the 4C instrument panel junction block assembly connector.

    2. Disconnect the A27 EV control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      4C-18 - A27-2 (BL) Always Below 1 Ω
      4C-18 or A27-2 (BL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK EV CONTROL ECU (OUTPUT VOLTAGE)


    1. Reconnect the A27 EV control ECU connector.

    2. A01MFWHC02
      *a

      Component with wire harness connected

      (Instrument Panel Junction Block Assembly)

      Reconnect the 4C instrument panel junction block assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      4C-18 - A27-2 (BL) Power switch on (IG), shift lever not in R Below 1 V
      4C-18 or A27-2 (BL) - Body ground Power switch on (IG), shift lever in R 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE EV CONTROL ECU Click here

    OK

  4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (OUTPUT VOLTAGE)


    1. A01MHHBC02
      *a

      Component with wire harness connected

      (Instrument Panel Junction Block Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      4D-22 - Body ground Power switch on (IG), shift lever not in R Below 1 V
      4D-22 - Body ground Power switch on (IG), shift lever in R 11 to 14 V
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR (REAR LIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

    B

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    C

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here