VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1268

DTC Code DTC Name
C1268 Transfer L4 Position Switch Circuit

DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area
C1268 Transfer L4 Position Switch Circuit

Either of the following is detected:


  1. No signal is input to the EXI4 terminal of the skid control ECU.

  2. The skid control ECU receives an L4 abnormal status signal from the 4 wheel drive control ECU via CAN.

  • L4 detection switch (Transfer shift actuator assembly)

  • L4 detection switch circuit

  • Skid control ECU (Brake actuator assembly)

  • 4 wheel drive control ECU

  • Touch select 2-4 and high-low system

WIRING DIAGRAM

B0028EBE01

CAUTION / NOTICE / HINT

Note

When replacing the skid control ECU (brake actuator assembly), perform zero point calibration and store system information.

Click here

Tech Tips

When DTC U0114 is output together with DTC C1268, inspect and repair the trouble areas indicated by DTC U0114 first.

Click here

PROCEDURE


  1. INSPECT TOUCH SELECT 2-4 AND HIGH-LOW SYSTEM


    1. Turn the 4WD control switch (transfer position switch) to L4, and then drive the vehicle and check that there are no problems with the touch select 2-4 and high-low system.

      OK
      There are no problems with the touch select 2-4 and high-low system.
      Result
      Result
      OK
      NG

    NG

    GO TO TOUCH SELECT 2-4 AND HIGH-LOW SYSTEM Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (EXI4 TERMINAL)


    1. Connect the A4 skid control ECU (brake actuator assembly) connector.

    2. Turn the 4WD control switch (transfer position switch) to L4.

    3. Disconnect the C60*1, G87*2 or G46*3 ECM connector.


      • *1: for 1GD-FTV and 2GD-FTV

      • *2: for 1GR-FE

      • *3: for 2TR-FE

    4. Disconnect the G89* TCM connector.


      • *: for 1KD-FTV

    5. B0024ICC63
      *a

      Front view of wire harness connector

      (to Skid Control ECU [Brake Actuator Assembly])

      Disconnect the A4 skid control ECU (brake actuator assembly) connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A4-5 (EXI4) - Body ground

      • Ignition switch ON

      • 4WD control switch (transfer position switch) set to L4

      		 Below 1.5 V

    7. Reconnect the A4 skid control ECU (brake actuator assembly) connector.

    8. Reconnect the C60*1, G87*2 or G46*3 ECM connector.


      • *1: for 1GD-FTV and 2GD-FTV

      • *2: for 1GR-FE

      • *3: for 2TR-FE

    9. Reconnect the G89* TCM connector.


      • *: for 1KD-FTV

    10. Turn the 4WD control switch (transfer position switch) to H2 or H4.

    11. Disconnect the C60*1, G87*2 or G46*3 ECM connector.


      • *1: for 1GD-FTV and 2GD-FTV

      • *2: for 1GR-FE

      • *3: for 2TR-FE

    12. Disconnect the G89* TCM connector.


      • *: for 1KD-FTV

    13. Disconnect the A4 skid control ECU (brake actuator assembly) connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A4-5 (EXI4) - Body ground

      • Ignition switch ON

      • 4WD control switch (transfer position switch) set to H2 or H4

      		 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (EXI4 CIRCUIT)

    OK

  3. RECONFIRM DTC


    1. Turn the ignition switch off.

    2. Reconnect the A4 skid control ECU (brake actuator assembly) connector.

    3. Reconnect the C60*1, G87*2 or G46*3 ECM connector.


      • *1: for 1GD-FTV and 2GD-FTV

      • *2: for 1GR-FE

      • *3: for 2TR-FE

    4. Reconnect the G89* TCM connector.


      • *: for 1KD-FTV

    5. Turn the ignition switch to ON.

    6. Clear the DTC.

      Click here


      Chassis > ABS/VSC/TRC > Clear DTCs

    7. Turn the ignition switch off.

    8. Start the engine.

    9. Turn the 4WD control switch (transfer position switch) to H2 or H4.

    10. Turn the 4WD control switch (transfer position switch) to L4, drive the vehicle, and then check for DTCs.


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Proceed to
      DTC is output
      DTC is not output

    DTC is output

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    DTC is not output

    USE SIMULATION METHOD TO CHECK Click here