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DTC    P3108-536    A/C Amplifier Communication Circuit Malfunction

for Preparation Click here


DESCRIPTION

  1. The power management control ECU (HV CPU) 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
  1. Wire harness or connector
  2. Compressor with motor assembly
  3. Power management control ECU

WIRING DIAGRAM


A220098E06


INSPECTION PROCEDURE

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


  1. Check the connections of the power management control ECU connectors.


    A237663E01


    Text in Illustration 
    *A
    		for LHD
    		*B
    		for RHD

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



NG
CONNECT SECURELY
OK


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


    A216621

  1. Check the connection of the low voltage connector of the compressor with motor assembly.

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



NG
CONNECT SECURELY
OK


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

  1. Disconnect connector D12 from the compressor with motor assembly.



    A211448E20

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    D12-5 (GND) - Body ground
    		Power switch off
    		Below 1 Ω

    Text in Illustration 
    *a
    		Front view of wire harness connector
    (to Compressor with Motor Assembly)

  1. Turn the power switch on (IG).

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    D12-6 (IG1) - D12-5 (GND)
    		Power switch on (IG)
    		11 to 14 V

    NOTICE:
    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.

  1. Turn the power switch off.

  1. Connect the compressor with motor assembly connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK DTC OUTPUT (HYBRID CONTROL)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (READY).

  1. Enter the following menus: Powertrain / Hybrid Control / DTC.

  1. Check if DTCs are output.

    Result:
    Result
    		Proceed to
    DTC P3108-536 is output.
    		A
    DTC P3108-536 is not output.
    		B

  1. Turn the power switch off.



B
Go to step 8
A


5.CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - COMPRESSOR WITH MOTOR)

  1. Disconnect connector A19 from the power management control ECU.

  1. Disconnect connector D12 from the compressor with motor assembly.

  1. Turn the power switch on (IG).



    A206712E13

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A19-19 (CLK) - Body ground
    		Power switch on (IG)
    		Below 1 V
    A19-31 (ITE) - Body ground
    		Power switch on (IG)
    		Below 1 V
    A19-30 (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)

    NOTICE:
    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.

  1. Turn the power switch off.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Switch Condition
    		Specified Condition
    A19-19 (CLK) - D12-1 (CLK)
    		Power switch off
    		Below 1 Ω
    A19-31 (ITE) - D12-2 (DIN)
    		Power switch off
    		Below 1 Ω
    A19-30 (ETI) - D12-3 (DOUT)
    		Power switch off
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Switch Condition
    		Specified Condition
    A19-19 (CLK) or D12-1 (CLK) - Body ground and other terminals
    		Power switch off
    		10 kΩ or higher
    A19-31 (ITE) or D12-2 (DIN) - Body ground and other terminals
    		Power switch off
    		10 kΩ or higher
    A19-30 (ETI) or D12-3 (DOUT) - Body ground and other terminals
    		Power switch off
    		10 kΩ or higher

  1. Connect the compressor with motor assembly connector.

  1. Connect the power management control ECU connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.CHECK POWER MANAGEMENT CONTROL ECU

  1. Disconnect connector D12 from the compressor with motor assembly.



    A211448E21

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    D12-3 (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)

  1. Turn the power switch on (IG).

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    D12-1 (CLK) - Body ground
    		Power switch on (IG)
    		11 to 14 V
    D12-2 (DIN) - Body ground
    		Power switch on (IG)
    		11 to 14 V
    D12-3 (DOUT) - Body ground
    		Power switch on (IG)
    		Below 1 V

    NOTICE:
    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.

  1. Turn the power switch off.

  1. Connect the compressor with motor assembly connector.



NG
REPLACE POWER MANAGEMENT CONTROL ECU (Click here)
OK


7.CHECK COMPRESSOR WITH MOTOR ASSEMBLY

  1. Disconnect connector A19 from the power management control ECU.



    A204443E13

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A19-19 (CLK) - Body ground
    		Power switch off
    		10 kΩ or higher
    A19-31 (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)

  1. Turn the power switch on (IG).

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A19-30 (ETI) - Body ground
    		Power switch on (IG)
    		11 to 14 V
    A19-19 (CLK) - Body ground
    		Power switch on (IG)
    		Below 1 V
    A19-31 (ITE) - Body ground
    		Power switch on (IG)
    		Below 1 V

    NOTICE:
    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.

  1. Turn the power switch off.

  1. Connect the power management control ECU connector.



NG
REPLACE COMPRESSOR WITH MOTOR ASSEMBLY (Click here)
OK

REPLACE POWER MANAGEMENT CONTROL ECU (Click here)  

8.CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - COMPRESSOR WITH MOTOR)

  1. Disconnect connector A19 from the power management control ECU.

  1. Disconnect connector D12 from the compressor with motor assembly.

  1. Turn the power switch on (IG).



    A206712E14

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A19-20 (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)

    NOTICE:
    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.

  1. Turn the power switch off.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Switch Condition
    		Specified Condition
    A19-20 (STB) - D12-4 (STBI)
    		Power switch off
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Switch Condition
    		Specified Condition
    A19-20 (STB) or D12-4 (STBI) - Body ground and other terminals
    		Power switch off
    		10 kΩ or higher

  1. Connect the compressor with motor assembly connector.

  1. Connect the power management control ECU connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


9.CHECK POWER MANAGEMENT CONTROL ECU

  1. Disconnect connector D12 from the compressor with motor assembly.



    A211448E22

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    D12-4 (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)

  1. Turn the power switch on (IG).

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    D12-4 (STBI) - Body ground
    		Power switch on (IG)
    		Below 1 V

    NOTICE:
    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.

  1. Turn the power switch off.

  1. Connect the compressor with motor assembly connector.



NG
REPLACE POWER MANAGEMENT CONTROL ECU (Click here)
OK


10.CHECK COMPRESSOR WITH MOTOR ASSEMBLY

  1. Disconnect connector A19 from the power management control ECU.



    A204443E14

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A19-20 (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)

  1. Turn the power switch on (IG).

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    A19-20 (STB) - Body ground
    		Power switch on (IG)
    		11 to 14 V

    NOTICE:
    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.

  1. Turn the power switch off.

  1. Connect the power management control ECU connector.



NG
REPLACE COMPRESSOR WITH MOTOR ASSEMBLY (Click here)
OK

REPLACE POWER MANAGEMENT CONTROL ECU (Click here)