CHARGING SYSTEM, Diagnostic DTC:P162B87

DTC Code DTC Name
P162B87 Lost Communication with Battery Monitor Module Missing Message

DESCRIPTION

The hybrid vehicle control ECU communicates with the battery state sensor assembly via LIN communication. If a LIN communication error is detected, the hybrid vehicle control ECU stores this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory Note
P162B87 Lost Communication with Battery Monitor Module Missing Message

Battery state sensor assembly or hybrid vehicle control ECU communication stops for approximately 17 minutes or more with the power switch on (IG)

(1 trip detection logic)

  • Wire harness or connector

  • Battery state sensor assembly

  • Hybrid vehicle control ECU

 Charge warning light does not come on DTC stored SAE Code: P162B

WIRING DIAGRAM

A001RV4E01

CAUTION / NOTICE / HINT

Note


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

  • Before replacing the hybrid vehicle control ECU, refer to Service Bulletin.

PROCEDURE


  1. CHECK BATTERY STATE SENSOR ASSEMBLY INSTALLATION CONDITION


    1. Check installation condition of the battery state sensor assembly.

      Result
      Proceed to
      OK
      NG

    NG

    INSTALL THE BATTERY STATE SENSOR ASSEMBLY CORRECTLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)


    1. Check that the battery state sensor assembly connector is securely connected.

      OK
      The connector is securely connected.

    2. Disconnect the C20 battery state sensor assembly connector.

    3. Check the connector case and terminals for deformation or corrosion.

      OK
      No deformation or corrosion.
    4. A001R0WC80
      *a

      Front view of wire harness connector

      (to Battery State Sensor Assembly)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      C20-1 (+B) - Body ground Power switch off 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - BATTERY STATE SENSOR ASSEMBLY)


    1. Disconnect the A49 hybrid vehicle control ECU connector.

    2. Disconnect the C20 battery state sensor assembly connector.

    3. Disconnect the C13 compressor with motor assembly connector.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      A49-17 (LIN3) - C20-2 (LIN) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      C20-2 (LIN), A49-17 (LIN3) or C13-3 (DOUT) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CLEAR DTCS


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    5. Check for DTCs, and note down any DTCs that are output.

      Click here


      Powertrain > Hybrid Control > Trouble Codes

    6. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    7. Clear the DTCs.

      Click here


      Powertrain > Hybrid Control > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  5. CLEAR DTCS (AIR CONDITIONING SYSTEM)


    1. Turn the power switch on (IG).

    2. Turn the GTS on.

    3. Enter the following menus: Body Electrical / Air Conditioner / Trouble Codes.

    4. Check for DTCs, and note down any DTCs that are output.

      Click here


      Body Electrical > Air Conditioner > Trouble Codes

    5. Enter the following menus: Body Electrical / Air Conditioner / Trouble Codes.

    6. Clear the DTCs.

      Click here


      Body Electrical > Air Conditioner > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  6. CHECK FOR DTCS


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (READY) and wait for 17 minutes or more.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

    5. Check for DTCs.

      Click here


      Powertrain > Hybrid Control > Trouble Codes
      Result
      Result Proceed to
      DTC P162B87 is output. A
      DTCs are not output. B

    B

    CHECK FOR INTERMITTENT PROBLEMS Click here

    A

  7. CHECK FOR DTCS (AIR CONDITIONING SYSTEM)


    1. Enter the following menus: Body Electrical / Air Conditioner / Trouble Codes.

    2. Check for DTCs when the following conditions are met.

      Click here


      Body Electrical > Air Conditioner > Trouble Codes
      Result
      Result Proceed to
      DTC B1498/98 is output. A
      DTCs are not output. B

    A

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    B

    REPLACE BATTERY STATE SENSOR ASSEMBLY Click here