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Home >> Toyota >> 2015 >> Avalon Hybrid Limited >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System - Diagnostic Codes - (Hybrid) (3 Of 8) >> Hybrid Control System >> DTC P3108-536: Lost Communication with A/C System Control Module [10/2015 - ] >> Procedure

DTC P3108-536: Lost Communication with A/C System Control Module [10/2015 - ]: Procedure

  1. CHECK DTC OUTPUT (AIR CONDITIONER) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Body Electrical / Air Conditioner / Trouble Codes.
    4. Check if DTCs related to the air conditioning system (A/C) are output.

      Result

      Result Proceed to
      DTCs related to A/C are not output. A
      DTCs related to A/C are output. B
    5. Turn the power switch off.

    B 

    GO TO DTC CHART (AIR CONDITIONING SYSTEM) 

    (Refer to DIAGNOSTIC TROUBLE CODE CHART [10/2015 - ] )

    A 

    See step  2

  2. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU ASSEMBLY CONNECTOR) 

    See step  3

    NG 

    CONNECT SECURELY 

    OK 

    See step  3

  3. CHECK CONNECTOR CONNECTION CONDITION (COMPRESSOR WITH MOTOR ASSEMBLY CONNECTOR) 
    1. Check the connection of the B58 compressor with motor assembly connector.
      GTY560547Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK

      The connector is connected securely and there are no contact problems.

    NG 

    CONNECT SECURELY 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (COMPRESSOR WITH MOTOR ASSEMBLY POWER SOURCE CIRCUIT) 
    1. Disconnect the B58 compressor with motor assembly connector.
    2. Measure the resistance according to the value (s) in the table below.
      GTY546920Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Compressor with Motor Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      B58-5 (GND) - Body ground Power switch off Below 1 Ω
    3. Turn the power switch on (IG).
    4. Measure the voltage according to the value (s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      B58-6 (IG1) - B58-5 (GND) Power switch on (IG) 11 to 14 V
      NOTE:

      Turning the power switch on (IG) with the compressor with motor assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    5. Turn the power switch off.
    6. Reconnect the B58 compressor with motor assembly connector.

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - COMPRESSOR WITH MOTOR ASSEMBLY) 
    1. Disconnect the A68 hybrid vehicle control ECU assembly connector.
    2. Disconnect the B58 compressor with motor assembly connector.
    3. Turn the power switch on (IG).
    4. Measure the voltage according to the value (s) in the table below.
      GTY572832Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Hybrid Vehicle Control ECU Assembly)
      *b Front view of wire harness connector
      (to Compressor with Motor Assembly)

      Standard Voltage

      Tester Connection Condition Specified Condition
      A68-10 (CLK) - Body ground Power switch on (IG) Below 1 V
      A68-11 (STB) - Body ground Power switch on (IG) Below 1 V
      A68-8 (ETI) - Body ground Power switch on (IG) Below 1 V
      A68-9 (ITE) - Body ground Power switch on (IG) Below 1 V
      NOTE:

      Turning the power switch on (IG) with the hybrid vehicle control ECU assembly connector and the compressor with motor assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    5. Turn the power switch off.
    6. Measure the resistance according to the value (s) in the table below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      A68-10 (CLK) - B58-1 (CLK) Power switch off Below 1 Ω
      A68-11 (STB) - B58-4 (STB1) Power switch off Below 1 Ω
      A68-8 (ETI) - B58-3 (DOUT) Power switch off Below 1 Ω
      A68-9 (ITE) - B58-2 (DIN) Power switch off Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      A68-10 (CLK) or B58-1 (CLK) - Body ground and other terminals Power switch off 10 kΩ or higher
      A68-11 (STB) or B58-4 (STB1) - Body ground and other terminals Power switch off 10 kΩ or higher
      A68-8 (ETI) or B58-3 (DOUT) - Body ground and other terminals Power switch off 10 kΩ or higher
      A68-9 (ITE) or B58-2 (DIN) - Body ground and other terminals Power switch off 10 kΩ or higher
    7. Reconnect the B58 compressor with motor assembly connector.
    8. Reconnect the A68 hybrid vehicle control ECU assembly connector.

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK 

    See step  6

  6. CHECK HYBRID VEHICLE CONTROL ECU ASSEMBLY 
    1. Disconnect the B58 compressor with motor assembly connector.
    2. Measure the resistance according to the value (s) in the table below.
      GTY540970Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Compressor with Motor Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      B58-3 (DOUT) - Body ground Power switch off 10 kΩ or higher
      B58-4 (STB1) - Body ground Power switch off 10 kΩ or higher
    3. Turn the power switch on (IG).
    4. Measure the voltage according to the value (s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      B58-1 (CLK) - Body ground Power switch on (IG) 11 to 14 V
      B58-2 (DIN) - Body ground Power switch on (IG) 11 to 14 V
      B58-3 (DOUT) - Body ground Power switch on (IG) Below 1 V
      B58-4 (STB1) - Body ground Power switch on (IG) Below 1 V
      NOTE:

      Turning the power switch on (IG) with the compressor with motor assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    5. Turn the power switch off.
    6. Reconnect the B58 compressor with motor assembly connector.

    NG 

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY 

    (Refer to COMPONENTS [10/2015 - ] )

    OK 

    See step  7

  7. CHECK COMPRESSOR WITH MOTOR ASSEMBLY 
    1. Disconnect the A68 hybrid vehicle control ECU assembly connector.
    2. Measure the resistance according to the value (s) in the table below.
      GTY541923Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Hybrid Vehicle Control ECU Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      A68-10 (CLK) - Body ground Power switch off 10 kΩ or higher
      A68-9 (ITE) - Body ground Power switch off 10 kΩ or higher
    3. Turn the power switch on (IG).
    4. Measure the voltage according to the value (s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      A68-10 (CLK) - Body ground Power switch on (IG) Below 1 V
      A68-11 (STB) - Body ground Power switch on (IG) 11 to 14 V
      A68-8 (ETI) - Body ground Power switch on (IG) 11 to 14 V
      A68-9 (ITE) - Body ground Power switch on (IG) Below 1 V
      NOTE:

      Turning the power switch on (IG) with the hybrid vehicle control ECU assembly connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    5. Turn the power switch off.
    6. Reconnect the A68 hybrid vehicle control ECU assembly connector.

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY 

    (Refer to COMPONENTS [10/2015 - ] )

    NG 

    REPLACE COMPRESSOR WITH MOTOR ASSEMBLY 

    (Refer to COMPONENTS [10/2014 - ] )

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