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CHARGING SYSTEM, Diagnostic DTC:P161A

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DTC Code DTC Name
P161A LIN Communication Error with Alternator
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DESCRIPTION

The power management control ECU and generator assembly detect reception errors respectively.

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

DTC Code DTC Detection Condition Trouble Area
P1602 A reception error in the power management control ECU 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

  • Power management control ECU
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WIRING DIAGRAM

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INSPECTION PROCEDURE

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PROCEDURE


  1. Click here

    CHECK CHARGING SYSTEM


    1. Check the charging system (Click here).

      Table 1. Result
      Result Proceed to
      OK w/ Entry and Start System A
      w/o Entry and Start System B
      NG C

  2. Click here

    CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - GENERATOR ASSEMBLY)


    1. Disconnect the H70 power management control ECU connector.

    2. Disconnect the C101 generator assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H70-1 (LIN1) - C101-1 (LIN) Always Below 1 Ω
      H70-1 (LIN1) or C101-1 (LIN) - Body ground and other terminals Ignition switch off (while LIN communication is stopped) 10 kΩ or higher
      Table 2. Result
      Result Proceed to
      NG A
      OK B

  3. Click here

    CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - GENERATOR ASSEMBLY)


    1. Disconnect the H73 power management control ECU connector.

    2. Disconnect the C101 generator assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H73-17 (LIN1) - C101-1 (LIN) Always Below 1 Ω
      H73-17 (LIN1) or C101-1 (LIN) - Body ground and other terminals Ignition switch off (while LIN communication is stopped) 10 kΩ or higher

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    INSPECT GENERATOR ASSEMBLY


    1. Inspect the generator assembly (Click here).

      Table 3. Result
      Result Proceed to
      OK for LHD A
      for RHD B
      NG C

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    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - GENERATOR ASSEMBLY)

  6. Click here

    REPAIR OR REPLACE CHARGING SYSTEM

  7. Click here

    REPLACE POWER MANAGEMENT CONTROL ECUClick here

  8. Click here

    REPLACE POWER MANAGEMENT CONTROL ECUClick here

  9. Click here

    REPLACE GENERATOR ASSEMBLYClick here