CHARGING SYSTEM, Diagnostic DTC:P161A

DTC Code DTC Name
P161A LIN Communication Error with Alternator

DESCRIPTION

The ECM and generator assembly each detect reception malfunctions. A generator assembly reception malfunction detected by the generator assembly is sent to the ECM via LIN communication. If there is a malfunction in either the ECM or generator assembly, the ECM determines that there is a LIN communication malfunction and outputs a DTC.

DTC Code DTC Detection Condition Trouble Area
P161A

Diagnosis condition:

Ignition switch ON

When the ECM cannot receive LIN communication, the generator assembly cannot receive LIN communication for approximately 17 minutes or more

Other: 1 trip

  • Harness or connector

  • Generator assembly

  • ECM

WIRING DIAGRAM

A01XKWWE29
*a Generator Assembly
*b LIN Communication Line

PROCEDURE


  1. CHECK CHARGING SYSTEM


    1. Check the charging system Click here.


    NG

    REPAIR OR REPLACE CHARGING SYSTEM

    OK

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


    1. Disconnect the C154 ECM connector.

    2. Disconnect the C157 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
      C154-16 (LIN) - C157-2 (LIN) Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      C154-16 (LIN) or C157-2 (LIN) - Body ground Ignition switch off (while LIN communication is stopped) 10 kΩ or higher

    4. Reconnect the C157 generator assembly connector.

    5. Reconnect the C154 ECM connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT GENERATOR ASSEMBLY


    1. Inspect the generator assembly Click here.


    OK

    REPLACE ECM Click here

    NG

    REPLACE GENERATOR ASSEMBLY Click here