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LIN COMMUNICATION SYSTEM Rear Heater Control Panel LIN Communication Malfunction

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DTC Code DTC Name
  Rear Heater Control Panel LIN Communication Malfunction
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DESCRIPTION

The LIN communication of the components related to the rear air conditioning occurs between the air conditioning amplifier (A/C ECU), rear air conditioning control panel and front air conditioning control panel.

A0159PAE01
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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

When using the intelligent tester with the ignition switch off to troubleshoot:

Connect the intelligent tester to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the intelligent tester and vehicle begins.

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PROCEDURE


  1. Click here

    CHECK AIR CONDITIONING TYPE


    1. Check air conditioning type.

      Table 1. Result
      Result Proceed to
      for 4-ZONE Type A
      except 4-ZONE Type B

  2. Click here

    CHECK HARNESS AND CONNECTOR (A/C ECU - REAR AIR CONDITIONING CONTROL PANEL AND FRONT AIR CONDITIONING CONTROL PANEL*)

    Tip:

    *: w/o Navigation System


    1. Disconnect the E36 amplifier connector.

    2. Disconnect the F10* and E55 panel connector.

    3. Measure the resistance and voltage according to the value(s) in the tables below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E36-21 (RLIN) - E55-4 (RLIN) Always Below 1 Ω
      E36-20 (LIN1) - F10-5 (LIN1)* Always Below 1 Ω
      E36-21 (RLIN) - Body ground Always 10 kΩ or higher
      E36-20 (LIN1) - Body ground* Always 10 kΩ or higher
      Standard Voltage
      Tester Connection Condition Specified Condition
      E36-21 (RLIN) - Body ground Always Below 1 V
      E36-20 (LIN1) - Body ground* Always Below 1 V

  3. Click here

    CHECK AIR CONDITIONING CONTROL PANEL (BATTERY VOLTAGE AND BODY GROUND)


    1. A0159WTE01

      Disconnect the E55 panel connector.

    2. Measure the resistance and voltage according to the value(s) in the tables below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E55-1 (E) - Body ground Always Below 1 Ω
      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      E55-6 (IG) - Body ground Ignition switch ON 11 to 14 V

  4. Click here

    CHECK REAR AIR CONDITIONING CONTROL PANEL


    1. Temporarily replace the rear air conditioning control panel with a new or normally functioning one (Click here).

    2. Check that the rear air conditioning function is normal.

      OK
      Rear air conditioning function is normal.
      Table 2. Result
      Result Proceed to
      OK A
      NG (w/ Navigation System) B
      NG (w/o Navigation System) (for LHD) C
      NG (w/o Navigation System) (for RHD) D

  5. Click here

    END (REAR AIR CONDITIONING CONTROL PANEL IS DEFECTIVE)

  6. Click here

    CHECK FRONT AIR CONDITIONING CONTROL PANEL


    1. A0158T5E01

      Disconnect the F10 panel connector.

    2. Measure the resistance and voltage according to the value(s) in the tables below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      F10-1 (GND) - Body ground Always Below 1 Ω
      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      F10-7 (IG+) - Body ground Ignition switch ON 11 to 14 V

  7. Click here

    CHECK FRONT AIR CONDITIONING CONTROL PANEL


    1. Temporarily replace the front air conditioning control panel with a new or normally functioning one (Click here).

    2. Check the that front air conditioning function is normal.

      OK
      Front air conditioning function is normal.
      Table 3. Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

  8. Click here

    END (FRONT AIR CONDITIONING CONTROL PANEL IS DEFECTIVE)

  9. Click here

    CHECK HARNESS AND CONNECTOR (A/C ECU - FRONT AIR CONDITIONING CONTROL PANEL)


    1. Disconnect the E81 amplifier connector.

    2. Disconnect the F10 panel connector.

    3. Measure the resistance and voltage according to the value(s) in the tables below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E81-37 (LIN1) - F10-5 (LIN1) Always Below 1 Ω
      E81-37 (LIN1) - Body ground Always 10 kΩ or higher
      Standard Voltage
      Tester Connection Condition Specified Condition
      E81-37 (LIN1) - Body ground Always Below 1 V

  10. Click here

    CHECK FRONT AIR CONDITIONING CONTROL ASSEMBLY (BATTERY VOLTAGE AND BODY GROUND)


    1. A0158T5E01

      Disconnect the F10 panel connector.

    2. Measure the resistance and voltage according to the value(s) in the tables below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      F10-1 (GND) - Body ground Always Below 1 Ω
      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      F10-7 (IG+) - Body ground Ignition switch ON 11 to 14 V

  11. Click here

    CHECK FRONT AIR CONDITIONING CONTROL ASSEMBLY


    1. Temporarily replace the front air conditioning control panel with a new or normally functioning one (Click here).

      Check the that front air conditioning function is normal.

      OK
      Front air conditioning function is normal.
      Table 4. Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

  12. Click here

    END (FRONT AIR CONDITIONING CONTROL PANEL IS DEFECTIVE)

  13. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  14. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  15. Click here

    REPLACE AIR CONDITIONING AMPLIFIERClick here

  16. Click here

    REPLACE AIR CONDITIONING AMPLIFIERClick here

  17. Click here

    REPLACE FRONT AIR CONDITIONING PANELClick here

  18. Click here

    REPLACE AIR CONDITIONING AMPLIFIERClick here

  19. Click here

    REPLACE FRONT AIR CONDITIONING CONTROL ASSEMBLYClick here

  20. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  21. Click here

    REPLACE FRONT AIR CONDITIONING CONTROL ASSEMBLYClick here

  22. Click here

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLYClick here

  23. Click here

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLYClick here