Dtc C1268/68 Transfer L4 Position Switch Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU EXI4 TERMINAL)

RECONFIRM DTC

INSPECT L4 POSITION SWITCH (NO. 1 TRANSFER INDICATOR SWITCH)

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - L4 POSITION SWITCH)

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - REAR DIFFERENTIAL LOCK ECU)

DTC C1268/68 Transfer "L4" Position Switch Circuit


DESCRIPTION


DTC Code
DTC Detection Condition
Trouble Area
C1268/68
No signal is input to the EXI4 terminal of the skid control ECU.
  1. L4 position switch (No. 1 transfer indicator switch)
  2. L4 position switch circuit
  3. Skid control ECU (Brake actuator assembly)
  4. Rear differential lock ECU (Four wheel drive control ECU)

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Brake Control.Vehicle Stability Control System. Dtc C1268/68 Transfer L4 Position Switch Circuit


INSPECTION PROCEDURE

NOTICE:
When replacing the brake actuator assembly, perform zero point calibration (Toyota Fortuner RM000000XHR02TX.html).
1.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU EXI4 TERMINAL)

  1. Turn the ignition switch off.

  1. Disconnect the skid control ECU connector.



    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Brake Control.Vehicle Stability Control System. Dtc C1268/68 Transfer L4 Position Switch Circuit

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    S25-9 (EXI4) - Body ground
    1. Ignition switch ON
    2. Transfer sift position not LL
    		11 to 14 V
    S25-9 (EXI4) - Body ground
    1. Ignition switch ON
    2. Transfer sift position LL
    		Below 1.5 V


NG
Go to step 3
OK


2.RECONFIRM DTC

  1. Clear the DTC(s) (Toyota Fortuner RM000000XHV09NX.html).

  1. Turn the ignition switch off.

  1. Check if the same DTC is recorded.

    Result
    Result
    		Proceed to
    DTC is output
    		A
    DTC is not output
    		B


B
USE SIMULATION METHOD TO CHECK
A

REPLACE BRAKE ACTUATOR ASSEMBLY

3.INSPECT L4 POSITION SWITCH (NO. 1 TRANSFER INDICATOR SWITCH)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Brake Control.Vehicle Stability Control System. Dtc C1268/68 Transfer L4 Position Switch Circuit

  1. Remove the L4 position switch.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    1 - 2
    		Pushed
    		Below 1 Ω
    1 - 2
    		Free
    		10 kΩ or higher


NG
REPLACE NO.1 TRANSFER INDICATOR SWITCH
OK


4.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - L4 POSITION SWITCH)

Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Brake Control.Vehicle Stability Control System. Dtc C1268/68 Transfer L4 Position Switch Circuit

  1. Turn the ignition switch off.

  1. Disconnect the skid control ECU connector.

  1. Disconnect the L4 position switch connector.

  1. Disconnect the rear differential lock ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S25-9 (EXI4) - T5-1
    		Always
    		Below 1 Ω
    S25-9 (EXI4) - Body ground
    		Always
    		10 kΩ or higher
    T5-2 - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - REAR DIFFERENTIAL LOCK ECU)

Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Brake Control.Vehicle Stability Control System. Dtc C1268/68 Transfer L4 Position Switch Circuit

  1. Turn the ignition switch off.

  1. Disconnect the skid control ECU connector.

  1. Disconnect the rear differential lock ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S25-9 (EXI4) - F18-8 (4WD)
    		Always
    		Below 1 Ω
    S25-9 (EXI4) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE 4 WHEEL DRIVE CONTROL ECU NO.2 (REAR DIFFERENTIAL LOCK ECU)