VEHICLE STABILITY CONTROL SYSTEM (for Hydraulic Brake Booster), Diagnostic DTC:C1340

DTC Code DTC Name
C1340 Center Differential Lock Circuit

DESCRIPTION

DTC Code DTC Detection Condition Trouble Area
C1340 An open circuit is detected in the EXI circuit of the skid control ECU.

  • Harness or connector

  • Transfer system

  • Master cylinder solenoid (Skid control ECU)

WIRING DIAGRAM

A00O77AE03

INSPECTION PROCEDURE

Note

When replacing the master cylinder solenoid, perform calibration Click here.

PROCEDURE


  1. CHECK TERMINAL VOLTAGE (EXI)


    1. Disconnect the A7 skid control ECU connector.

    2. A00O4C5E29
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Skid Control ECU)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A7-27 (EXI) - Body ground Ignition switch ON 11 to 14 V

    NG

    Click here

    OK

  2. RECONFIRM DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC is not output A
      DTC is output (for LHD) B
      DTC is output (for RHD) C

    B

    REPLACE MASTER CYLINDER SOLENOID Click here

    C

    REPLACE MASTER CYLINDER SOLENOID Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  3. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - FOUR WHEEL DRIVE CONTROL ECU/TRANSFER SHIFT ACTUATOR)


    1. Disconnect the A7 skid control ECU connector.

    2. Disconnect the G53 four wheel drive control ECU connector.

    3. Disconnect the C43 transfer shift actuator connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A7-27 (EXI) - G53-14 (P1) Always Below 1 Ω
      A7-27 (EXI) - C43-9 (CDL) Always Below 1 Ω
      A7-27 (EXI) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    GO TO TRANSFER SYSTEM (PROBLEM SYMPTOMS TABLE) Click here