VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1340

DTC Code DTC Name
C1340 Center Differential Lock Circuit

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1340

Center Differential Lock Circuit

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

C212548E09

CAUTION / NOTICE / HINT

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. C214161C03

      *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

      Engine switch on (IG)

      11 to 14 V

      Result

      Result

      OK

      NG

    NG

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

    OK
  2. RECONFIRM DTC

    1. Clear the DTCs.

      Click hereClick here

      Chassis > ABS/VSC/TRC > Clear DTCs

    2. Check for DTCs.

      Click hereClick here

      Chassis > ABS/VSC/TRC > Trouble Codes

      Result

      Result

      Proceed to

      DTC is not output

      A

      DTC is output

      B

    A

    USE SIMULATION METHOD TO CHECK

    B

    REPLACE MASTER CYLINDER SOLENOID

  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 G41 four wheel drive control ECU connector.

    3. Disconnect the C34 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) - G41-14 (P1)

      Always

      Below 1 Ω

      A7-27 (EXI) - C34-9 (CDL)

      Always

      Below 1 Ω

      A7-27 (EXI) - Body ground

      Always

      10 kΩ or higher

      Result

      Result

      OK

      NG

    OK

    GO TO TRANSFER SYSTEM (PROBLEM SYMPTOMS TABLE)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR