RX400h · Service Manual BRAKE

TC and CG Terminal Circuit

Circuit diagnosis

DESCRIPTION

Connecting terminals TC and CG of the DLC3 causes the ECU to display the DTC by blinking the ABS warning light.

WIRING DIAGRAM

C112011E02

INSPECTION PROCEDURE

NOTICE:
When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration (Click here).


1. INSPECT DLC3 (TC AND CG TERMINAL)

  1. C052361E87
    Turn the ignition switch on.

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

    Voltage:
    Tester Connection
    		 Condition
    		 Specified Condition
    D1-13 (TC) - Body ground
    		 Ignition switch on
    		 10 to 14 V

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

    Resistance:
    Tester Connection
    		 Specified Condition
    D1-4 (CG) - Body ground
    		 Below 1 Ω



NG
Go to step 3
OK


2. CHECK CAN COMMUNICATION SYSTEM

  1. Check if the CAN communication DTC is output (Click here for LHD, for Click here RHD).

    Result:
    Condition
    		 Proceed To
    DTC is not output
    		 A
    DTC is output
    		 B

    HINT:
    If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step before replacing the part (Click here).



 B
REPAIR CIRCUIT INDICATED BY OUTPUT CODE
A


3. CHECK HARNESS AND CONNECTOR (DLC3 (TC) TO HV CONTROL ECU)

  1. C100597E01
    Disconnect the HV control ECU connector.

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

    Resistance:
    Tester Connection
    		 Specified Condition
    D1-13 (TC) - H29-3 (TC)
    		 Below 1 Ω

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

    Resistance:
    Tester Connection
    		 Specified Condition
    D1-13 (TC) - Body ground
    		 10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4. CHECK HARNESS AND CONNECTOR (DLC3 (CG) TO BODY GROUND)

  1. C052361E85
    Measure the resistance according to the value(s) in the table below.

    Resistance:
    Tester Connection
    		 Specified Condition
    D1-4 (CG) - Body ground
    		 Below 1 Ω



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5. CHECK ECM (DLC3 (TC) INPUT)

  1. C052361E87
    Using the SST, connect terminals TC and CG of the DLC3.

  1. Check that the engine warning light is blinking.

    Result:
    Condition
    		 Proceed To
    Engine warning light is blinking
    		 A
    Engine warning light is not blinking
    		 B

SST
09843-18040  


 B
REPAIR OR REPLACE HARNESS OR CONNECTOR
A


6. CHECK CAN COMMUNICATION SYSTEM

  1. Check if the CAN communication DTC is output (Click here for LHD, for Click here RHD).

    Result:
    Condition
    		 Proceed To
    DTC is not output
    		 A
    DTC is output
    		 B

    HINT:
    If troubleshooting has been carried out according to the PROBLEM SYMPTOMS TABLE, refer back to the table and proceed to the next step before replacing the part (Click here).



 B
REPAIR CIRCUIT INDICATED BY OUTPUT CODE
A

REPLACE SKID CONTROL ECU


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