CHARGING SYSTEM, Diagnostic DTC:P161A

DTC Code DTC Name
P161A LIN Communication Error with Alternator

DESCRIPTION

The generator control ECU assembly and generator assembly detect reception errors respectively. The generator assembly reception error detected by the generator assembly is sent to the generator control ECU assembly via LIN communication. If an error occurs in the generator control ECU assembly or generator assembly, the generator control ECU assembly determines there is a LIN communication error and stores this DTC.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P161A

LIN Communication Error with Alternator

A reception error in the generator control ECU assembly or generator assembly continues for approximately 17 minutes or more with the ignition switch ON

(1 trip detection logic)

  • Wire harness or connector

  • Generator assembly

  • Generator control ECU assembly

Comes on

DTC stored

WIRING DIAGRAM

E221308E02

PROCEDURE

  1. CHECK CHARGING SYSTEM

    1. Check the charging system.

      Click here

    Result

    Result

    OK

    NG
    NG

    REPAIR OR REPLACE CHARGING SYSTEM

    OK

  2. CHECK HARNESS AND CONNECTOR (GENERATOR CONTROL ECU ASSEMBLY - GENERATOR ASSEMBLY)

    1. Disconnect the A52 generator control ECU assembly connector.

    2. Disconnect the B39 generator assembly connector.

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

      Standard Resistance (Check for Open)

      Tester Connection

      Condition

      Specified Condition

      A52-6 (LIN1) - B39-1 (LIN)

      Always

      Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection

      Condition

      Specified Condition

      A52-6 (LIN1) or B39-1 (LIN) - Body ground

      Ignition switch off

      (while LIN communication is stopped)

      10 kΩ or higher

    4. Reconnect the B39 generator assembly connector.

    5. Reconnect the A52 generator control ECU assembly connector.

    Result

    Result

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT GENERATOR ASSEMBLY

    1. Inspect the generator assembly.

    Result

    Result

    OK

    NG
    OK

    REPLACE GENERATOR CONTROL ECU ASSEMBLY

    Click here

    NG

    REPLACE GENERATOR ASSEMBLY