CHARGING SYSTEM, Diagnostic DTC:P162B87

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

DESCRIPTION

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

DTC No. DTC Detection Condition Trouble Area
P162B87

Battery state sensor assembly or ECM communication stops for 33 seconds or more with the engine switch on (IG).

(1 trip detection logic)

  • Wire harness or connector

  • Battery state sensor assembly

  • ECM

WIRING DIAGRAM

A01W2J9E06

CAUTION / NOTICE / HINT

Note


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

  • Before replacing the ECM, refer to Service Bulletin.

PROCEDURE


  1. CHECK BATTERY STATE SENSOR ASSEMBLY INSTALLATION CONDITION


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


    NG

    INSTALL THE BATTERY STATE SENSOR ASSEMBLY CORRECTLY Click here

    OK

  2. CHECK CHARGING SYSTEM


    1. Check the charging system. Click here


    NG

    REPAIR OR REPLACE CHARGING SYSTEM

    OK

  3. CHECK HARNESS AND CONNECTOR (ECM - BATTERY STATE SENSOR ASSEMBLY)


    1. Disconnect the D87 ECM connector.

    2. Disconnect the D97 battery state sensor assembly connector.

    3. Disconnect the D90 generator 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
      D97-2 (LIN) - D87-61 (LIN) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      D97-2 (LIN), D90-2 (LIN) or D87-61 (LIN) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. 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. A01W133E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Battery State Sensor Assembly)

      Disconnect the D97 battery state sensor assembly connector.

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

      OK
      No deformation or corrosion.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      D97-1 (+B) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CLEAR DTCS


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

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

    5. Clear the DTCs. Click here

    6. Turn the engine switch off, wait 30 seconds.


    NEXT

  6. CHECK FOR DTCS


    1. Connect the GTS to the DLC3.

    2. Start the engine.

    3. Allow the engine to idle for approximately 17 minutes or more.

    4. Turn the GTS on.

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

    6. Check for DTCs. Click here

      Result
      Result Proceed to
      Only DTC P162B87 is output A
      DTC P161A87 and P162B87 are output. B
      DTCs are not output. C

    A

    REPLACE BATTERY STATE SENSOR ASSEMBLY Click here

    B

    REPLACE ECM Click here

    C

    CHECK FOR INTERMITTENT PROBLEMS (FOR SFI SYSTEM) Click here