HYBRID CONTROL SYSTEM, Diagnostic DTC:P3108-536

DTC Code DTC Name
P3108-536 Lost Communication with A/C System Control Module

DESCRIPTION

The hybrid vehicle control ECU assembly detects a wiring malfunction in the serial communication line between it and the compressor with motor assembly.

DTC No. INF Code DTC Detection Condition Trouble Area
P3108 536 A/C inverter malfunction

  • Wire harness or connector

  • Compressor with motor assembly

  • Hybrid vehicle control ECU assembly

WIRING DIAGRAM

A0009L5E02
*a Compressor with Motor Assembly
*b Hybrid Vehicle Control ECU Assembly

PROCEDURE


  1. CHECK DTC OUTPUT (AIR CONDITIONER)


    1. Connect the GTS 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) Click here

    A

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


    1. A0005OEE01
      Text in Illustration
      *A for LHD
      *B for RHD

      Check the connector connections and contact pressure of the relevant terminals for the hybrid vehicle control ECU assembly connectors Click here.

      OK
      The connectors are connected securely and there are no contact pressure problems.

    NG

    CONNECT SECURELY

    OK

  3. CHECK CONNECTOR CONNECTION CONDITION (COMPRESSOR WITH MOTOR ASSEMBLY CONNECTOR)


    1. A0007Y3E03

      Check the connection of connector D60 of the compressor with motor assembly.

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

    NG

    CONNECT SECURELY

    OK

  4. CHECK HARNESS AND CONNECTOR (COMPRESSOR WITH MOTOR ASSEMBLY POWER SOURCE CIRCUIT)


    1. Disconnect the D60 compressor with motor assembly connector.

    2. A0004IPE03
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Compressor with Motor Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D60-5 (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
      D60-6 (IG1) - D60-5 (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 D60 compressor with motor assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - COMPRESSOR WITH MOTOR ASSEMBLY)


    1. Disconnect the A79 hybrid vehicle control ECU assembly connector.

    2. Disconnect the D60 compressor with motor assembly connector.

    3. Turn the power switch on (IG).

    4. A0004O7E02
      Text in Illustration
      *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)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A79-10 (CLK) - Body ground Power switch on (IG) Below 1 V
      A79-11 (STB) - Body ground Power switch on (IG) Below 1 V
      A79-8 (ETI) - Body ground Power switch on (IG) Below 1 V
      A79-9 (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
      A79-10 (CLK) - D60-1 (CLK) Power switch off Below 1 Ω
      A79-11 (STB) - D60-4 (STBI) Power switch off Below 1 Ω
      A79-8 (ETI) - D60-3 (DOUT) Power switch off Below 1 Ω
      A79-9 (ITE) - D60-2 (DIN) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      A79-10 (CLK) or D60-1 (CLK) - Body ground and other terminals Power switch off 10 kΩ or higher
      A79-11 (STB) or D60-4 (STBI) - Body ground and other terminals Power switch off 10 kΩ or higher
      A79-8 (ETI) or D60-3 (DOUT) - Body ground and other terminals Power switch off 10 kΩ or higher
      A79-9 (ITE) or D60-2 (DIN) - Body ground and other terminals Power switch off 10 kΩ or higher

    7. Reconnect the D60 compressor with motor assembly connector.

    8. Reconnect the A79 hybrid vehicle control ECU assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HYBRID VEHICLE CONTROL ECU ASSEMBLY


    1. Disconnect the D60 compressor with motor assembly connector.

    2. A0006IXE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Compressor with Motor Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D60-3 (DOUT) - Body ground Power switch off 10 kΩ or higher
      D60-4 (STBI) - 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
      D60-1 (CLK) - Body ground Power switch on (IG) 11 to 14 V
      D60-2 (DIN) - Body ground Power switch on (IG) 11 to 14 V
      D60-3 (DOUT) - Body ground Power switch on (IG) Below 1 V
      D60-4 (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. Reconnect the D60 compressor with motor assembly connector.


    NG

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY Click here

    OK

  7. CHECK COMPRESSOR WITH MOTOR ASSEMBLY


    1. Disconnect the A79 hybrid vehicle control ECU assembly connector.

    2. A00066DE02
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A79-10 (CLK) - Body ground Power switch off 10 kΩ or higher
      A79-9 (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
      A79-10 (CLK) - Body ground Power switch on (IG) Below 1 V
      A79-11 (STB) - Body ground Power switch on (IG) 11 to 14 V
      A79-8 (ETI) - Body ground Power switch on (IG) 11 to 14 V
      A79-9 (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 A79 hybrid vehicle control ECU assembly connector.


    OK

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY Click here

    NG

    REPLACE COMPRESSOR WITH MOTOR ASSEMBLY Click here