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

  • Skid control ECU (Master cylinder solenoid)

WIRING DIAGRAM

B001CLPE24
*a Skid Control ECU (Master Cylinder Solenoid)
*b Center Differential Lock Detection Switch (Transfer Shift Actuator)
*c 4 Wheel Drive Control ECU

CAUTION / NOTICE / HINT

Note

When replacing the skid control ECU (master cylinder solenoid), perform calibration Click here.

PROCEDURE


  1. CHECK TERMINAL VOLTAGE (EXI)


    1. Disconnect the A7 skid control ECU connector.

    2. B001EWME01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Skid Control ECU (Master Cylinder Solenoid))

      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

    CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - 4 WHEEL DRIVE CONTROL ECU/TRANSFER SHIFT ACTUATOR) 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

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE MASTER CYLINDER SOLENOID Click here

    C

    REPLACE MASTER CYLINDER SOLENOID Click here

  3. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - 4 WHEEL DRIVE CONTROL ECU/TRANSFER SHIFT ACTUATOR)


    1. Disconnect the A7 skid control ECU (master cylinder solenoid) connector.

    2. Disconnect the G53 4 wheel drive control ECU connector.

    3. Disconnect the C43 center differential lock detection switch (transfer shift actuator assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A7-27 (EXI) - G53-3 (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
      C43-6 (GND1) - Body ground Always Below 1 Ω

    OK

    GO TO TRANSFER SYSTEM (PROBLEM SYMPTOMS TABLE) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR