LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2007 >> GS 350 AWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control >> Vehicle Stability Control System >> TC and CG Terminal Circuit >> Inspection Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection Procedure

NOTE: When replacing the ABS and TRACTION actuator assembly, perform zero point calibration (see CALIBRATION ).
  1. INSPECT DLC3 TERMINAL VOLTAGE (TC TERMINAL VOLTAGE) 
    1. Turn the engine switch on (IG).
    2. Measure the voltage according to the value(s) in the table below.

      Voltage 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Condition Specified Condition
      K16-13 (TC) - Body ground Engine switch on (IG) 10 to 14 V
    3. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Specified Condition
      K16-4 (CG) - Body ground Below 1 Ω
    Fig 1: Identifying DLC3 Connector
    G05296978Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG:  Go to step  4

    OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (ECM TO DLC3) 
    1. Disconnect the ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Specified Condition
      K16-13 (TC) - A7-3 (TC) Below 1 Ω
    3. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Specified Condition
      K16-13 (TC) - Body ground 10 kΩ or higher
    Fig 2: Identifying ECM And DLC3 Connector Terminals
    G05296979Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (TC TERMINAL CIRCUIT) 

    OK: Go to next step 

  3. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if the CAN communication DTC is output (see DIAGNOSIS SYSTEM ).

    Result 

    RESULT CHART

    Display (DTC Output) Proceed To
    DTC is not output A
    DTC is output B (see DIAGNOSIS SYSTEM )

    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 (see PROBLEM SYMPTOMS TABLE ).

    B: REPAIR CIRCUIT INDICATED BY OUTPUT CODE 

    A: REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY 

  4. CHECK HARNESS AND CONNECTOR (ECM TO DLC3) 
    1. Disconnect the ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Specified Condition
      K16-13 (TC) - A7-3 (TC) Below 1 Ω
    3. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Specified Condition
      K16-13 (TC) - Body ground 10 kΩ or higher
    Fig 3: Identifying ECM And DLC3 Connector Terminals
    G05296979Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (TC CIRCUIT) 

    OK: Go to next step 

  5. CHECK HARNESS AND CONNECTOR (DLC3 TO BODY GROUND) 
    1. Measure the resistance according to the value(s) in the table below.

      Resistance 

      TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

      Tester Connection Specified Condition
      K16-4 (CG) - Body ground Below 1 Ω
    Fig 4: Identifying DLC3 Connector
    G05296981Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  6. CHECK ECM (DLC3 TC INPUT) 
    1. Using the SST, connect terminals TC and CG of the DLC3.
    2. Check that MIL is blinking.

      Result 

      RESULT CHART

      Condition Proceed To
      MIL is blinking A
      MIL is not blinking B
    Fig 5: Identifying DLC3 Connector
    G05296978Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    B: REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM TC CIRCUIT) 

    A: Go to next step 

  7. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if the CAN communication system DTC is output (see DIAGNOSIS SYSTEM ).

    Result 

    RESULT CHART

    Display (DTC Output) Proceed To
    DTC is not output A
    DTC is output B (see DIAGNOSIS SYSTEM )

    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 (see PROBLEM SYMPTOMS TABLE ).

    B: REPAIR CIRCUIT INDICATED BY OUTPUT CODE 

    A: REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY 

scientia non olet · About LEMON Manuals