CHARGING SYSTEM, Diagnostic DTC:P161A

DTC Code DTC Name
P161A LIN Communication Error with Alternator

DESCRIPTION

The ECM and generator assembly detect reception errors respectively.

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

DTC Code

DTC Detection Condition

Trouble Area

P161A

A reception error in the ECM 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

  • ECM

WIRING DIAGRAM

E221308E33

PROCEDURE

  1. CHECK CHARGING SYSTEM

    1. Check the charging system (Click here).

    REPAIR OR REPLACE CHARGING SYSTEM

  2. CHECK HARNESS AND CONNECTOR (ECM - GENERATOR ASSEMBLY)

    1. Disconnect the C111 ECM connector.

    2. Disconnect the C102 generator assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      C111-61 (LIN) - C102-2 (LIN)

      Always

      Below 1 Ω

      C111-61 (LIN) or C102-2 (LIN) - Body ground and other terminals

      Ignition switch off (while LIN communication is stopped)

      10 kΩ or higher

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  3. INSPECT GENERATOR ASSEMBLY

    1. Inspect the generator assembly (Click here).

    REPLACE ECM

    (Click here)

    REPLACE GENERATOR ASSEMBLY

    (Click here)