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Home >> Lexus >> 2017 >> GS 450h Base >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (Diagnostic Introduction And Codes) >> Hybrid Control System >> DTC P3108-536: Lost Communication with A/C System Control Module [09/2014 - ] >> Procedure

DTC P3108-536: Lost Communication with A/C System Control Module [09/2014 - ]: Procedure

  1. CHECK CONNECTOR CONNECTION CONDITION (POWER MANAGEMENT CONTROL ECU CONNECTOR) 

    Refer to PROCEDURE - Step 3

    Result:  NG

    NG 

    CONNECT SECURELY 

    Result:  OK

    OK 

    See step  2

  2. CHECK CONNECTOR CONNECTION CONDITION (COMPRESSOR WITH MOTOR ASSEMBLY CONNECTOR) 
    1. Check the connection of the compressor with motor assembly connector (See page. Refer to ELECTRONIC CIRCUIT INSPECTION PROCEDURE [09/2014 - ] ).
      GTY398361Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK

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

    Result:  NG

    NG 

    CONNECT SECURELY 

    Result:  OK

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (COMPRESSOR WITH MOTOR ASSEMBLY POWER SOURCE CIRCUIT) 
    1. Disconnect the connector from the compressor with motor assembly.
    2. Measure the resistance according to the value(s) in the table below.
      GTY528567Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      F16-5 (GND) - Body ground Power switch off Below 1 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Compressor with Motor Assembly)
    3. Turn the power switch on (IG).
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      F16-6 (IG1) - F16-5 (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. Connect the compressor with motor assembly connector.

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  OK

    OK 

    See step  4

  4. CHECK DTC OUTPUT (HYBRID CONTROL) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (READY).
    3. Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
    4. Check if DTCs are output.

      Result

      Result Proceed to
      P3108-536 is output. A
      P3108-536 is not output. B
    5. Turn the power switch off.

    Result:  B

    B 

    See step  8

    Result:  A

    A 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - COMPRESSOR WITH MOTOR ASSEMBLY) 
    1. Disconnect the connector from the power management control ECU.
    2. Disconnect the connector from the compressor with motor assembly.
    3. Turn the power switch on (IG).
    4. Measure the voltage according to the value(s) in the table below.
      GTY533042Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      A36-16 (CLK) - Body ground Power switch on (IG) Below 1 V
      A36-17 (ITE) - Body ground Power switch on (IG) Below 1 V
      A36-18 (ETI) - Body ground Power switch on (IG) Below 1 V
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Power Management Control ECU)
      *b Front view of wire harness connector
      (to Compressor with Motor Assembly)
      NOTE:

      Turning the power switch on (IG) with the power management control ECU 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 Switch Condition Specified Condition
      A36-16 (CLK) - F16-1 (CLK) Power switch off Below 1 Ω
      A36-17 (ITE) - F16-2 (DIN) Power switch off Below 1 Ω
      A36-18 (ETI) - F16-3 (DOUT) Power switch off Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Switch Condition Specified Condition
      A36-16 (CLK) or F16-1 (CLK) - Body ground and other terminals Power switch off 10 kΩ or higher
      A36-17 (ITE) or F16-2 (DIN) - Body ground and other terminals Power switch off 10 kΩ or higher
      A36-18 (ETI) or F16-3 (DOUT) - Body ground and other terminals Power switch off 10 kΩ or higher
    7. Connect the compressor with motor assembly connector.
    8. Connect the power management control ECU connector.

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  OK

    OK 

    See step  6

  6. CHECK POWER MANAGEMENT CONTROL ECU 
    1. Disconnect the connector from the compressor with motor assembly.
    2. Measure the resistance according to the value(s) in the table below.
      GTY524459Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      F16-3 (DOUT) - Body ground Power switch off 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Compressor with Motor Assembly)
    3. Turn the power switch on (IG).
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      F16-1 (CLK) - Body ground Power switch on (IG) 11 to 14 V
      F16-2 (DIN) - Body ground Power switch on (IG) 11 to 14 V
      F16-3 (DOUT) - 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. Connect the compressor with motor assembly connector.

    Result:  NG

    NG 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (See page. Refer to REMOVAL [09/2014 - ] )

    Result:  OK

    OK 

    See step  7

  7. CHECK COMPRESSOR WITH MOTOR ASSEMBLY 
    1. Disconnect the connector from the power management control ECU.
    2. Measure the resistance according to the value(s) in the table below.
      GTY532605Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      A36-16 (CLK) - Body ground Power switch off 10 kΩ or higher
      A36-17 (ITE) - Body ground Power switch off 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Power Management Control ECU)
    3. Turn the power switch on (IG).
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      A36-18 (ETI) - Body ground Power switch on (IG) 11 to 14 V
      A36-16 (CLK) - Body ground Power switch on (IG) Below 1 V
      A36-17 (ITE) - Body ground Power switch on (IG) Below 1 V
      NOTE:

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

    5. Turn the power switch off.
    6. Connect the power management control ECU connector.

    Result:  OK

    OK 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (See page. Refer to REMOVAL [09/2014 - ] )

    Result:  NG

    NG 

    REPLACE COMPRESSOR WITH MOTOR ASSEMBLY 

    (See page. Refer to REMOVAL [09/2014 - 10/2015] Refer to REMOVAL [10/2015 - ] )

  8. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - COMPRESSOR WITH MOTOR ASSEMBLY) 
    1. Disconnect the connector from the power management control ECU.
    2. Disconnect the connector from the compressor with motor assembly.
    3. Turn the power switch on (IG).
    4. Measure the voltage according to the value(s) in the table below.
      GTY526277Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      A36-19 (STB) - Body ground Power switch on (IG) Below 1 V
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Power Management Control ECU)
      *b Front view of wire harness connector
      (to Compressor with Motor Assembly)
      NOTE:

      Turning the power switch on (IG) with the power management control ECU 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 Switch Condition Specified Condition
      A36-19 (STB) - F16-4 (STBI) Power switch off Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Switch Condition Specified Condition
      A36-19 (STB) or F16-4 (STBI) - Body ground and other terminals Power switch off 10 kΩ or higher
    7. Connect the compressor with motor assembly connector.
    8. Connect the power management control ECU connector.

    Result:  NG

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result:  OK

    OK 

    See step  9

  9. CHECK POWER MANAGEMENT CONTROL ECU 
    1. Disconnect the connector from the compressor with motor assembly.
    2. Measure the resistance according to the value(s) in the table below.
      GTY532624Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      F16-4 (STBI) - Body ground Power switch off 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Compressor with Motor Assembly)
    3. Turn the power switch on (IG).
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      F16-4 (STBI) - 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. Connect the compressor with motor assembly connector.

    Result:  NG

    NG 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (See page. Refer to REMOVAL [09/2014 - ] )

    Result:  OK

    OK 

    See step  10

  10. CHECK COMPRESSOR WITH MOTOR ASSEMBLY 
    1. Disconnect the connector from the power management control ECU.
    2. Measure the resistance according to the value(s) in the table below.
      GTY526995Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      A36-19 (STB) - Body ground Power switch off 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Power Management Control ECU)
    3. Turn the power switch on (IG).
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      A36-19 (STB) - Body ground Power switch on (IG) 11 to 14 V
      NOTE:

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

    5. Turn the power switch off.
    6. Connect the power management control ECU connector.

    Result:  OK

    OK 

    REPLACE POWER MANAGEMENT CONTROL ECU 

    (See page. Refer to REMOVAL [09/2014 - ] )

    Result:  NG

    NG 

    REPLACE COMPRESSOR WITH MOTOR ASSEMBLY 

    (See page. Refer to REMOVAL [09/2014 - 10/2015] Refer to REMOVAL [10/2015 - ] )

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