AIR SUSPENSION SYSTEM TC and CG Terminal Circuit

DESCRIPTION

DTC output mode is set by connecting terminals 13 (TC) and 4 (CG) of the DLC3. The DTCs are indicated by the blinking of the "HEIGHT HIGH" indicator light.

WIRING DIAGRAM

A001G0DE01
*a CAN Communication Line
*b Suspension Control ECU

PROCEDURE


  1. INSPECT DLC3 (TC VOLTAGE)

    A001D94E21
    *1 Front view of DLC3:

    1. Measure the voltage according to the value in the table below.

      Standard voltage
      Tester Connection Switch Condition Specified Condition
      L31-13 (TC) - L31-4 (CG) Engine switch on (IG) 10 to 14 V
      Result
      Result Proceed to
      NG A
      OK B

    B

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    A

  2. CHECK HARNESS AND CONNECTOR (DLC3 - ECM AND BODY GROUND)


    1. A001CX7E02
      Front view of DLC3
      *1 Front view of wire harness connector: (to ECM)

      Disconnect the A13 ECM connector.

    2. Measure the resistance according to the value in the table below.

      Standard resistance
      Tester Connection Switch Condition Specified Condition
      L31-13 (TC) - A13-21 (TC) Always Below 1 Ω
      L31-13 (TC) or A13-21 (TC) - Body ground Always 10 kΩ or higher
      L31-4 (CG) - Body ground Always Below 1 Ω
      Result
      Result Proceed to
      NG A
      OK (1UR-FSE) B
      OK (1UR-FE) C

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    B

    REPLACE ECM (1UR-FSE) Click here

    C

    REPLACE ECM (1UR-FE) Click here