Dtc C1283/83 L4 Position Switch Malfunction (Test Mode Dtc)

Brake. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
Brake Control Dynamic Control Systems. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK EXI4 TERMINAL CIRCUIT

CHECK TEST MODE DTC

CHECK HARNESS AND CONNECTOR (EXI4 TERMINAL CIRCUIT)

INSPECT L4 POSITION SWITCH

DTC C1283/83 L4 Position Switch Malfunction (Test Mode DTC)


DESCRIPTION

DTC C1283/83 is output only in Test Mode.

DTC Code
DTC Detection Condition
Trouble Area
C1283/83
No signal is input to the EXI4 terminal of the skid control ECU.
  1. L4 position switch (No. 1 transfer indicator switch)
  2. EXI4 terminal circuit
  3. Skid control ECU (Brake actuator assembly)

WIRING DIAGRAM


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Brake Control Dynamic Control Systems.Anti-Lock Brake System. Dtc C1283/83 L4 Position Switch Malfunction (Test Mode Dtc)


INSPECTION PROCEDURE

NOTICE:
  1. Before disconnecting the connector, make sure that there are no problems with the connection.
  2. After disconnecting the connector, make sure that the connector case and terminals are not deformed or corroded.
1.CHECK EXI4 TERMINAL CIRCUIT

  1. Set the vehicle to the L4 state using the transfer shift lever.

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

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A13-3 (EXI4) - Body ground
    		Transfer shift position L4
    		Below 1 Ω

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

  1. Set the vehicle to the H2 state using the transfer shift lever.

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

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A13-3 (EXI4) - Body ground
    		Transfer shift position H2
    		10 kΩ or higher


NG
Go to step 3
OK


2.CHECK TEST MODE DTC

  1. Switch the vehicle to Test Mode, perform the H2 to L4 shift operation check, and then check that DTC C1283/83 is not stored (HILUX_TGN26 RM000000XHT090X.html).

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


B
USE SIMULATION METHOD TO CHECK (HILUX_TGN26 RM000004QR7004X.html)
A

REPLACE BRAKE ACTUATOR ASSEMBLY (HILUX_TGN26 RM0000010K0019X.html)

3.CHECK HARNESS AND CONNECTOR (EXI4 TERMINAL CIRCUIT)

  1. Turn the ignition switch off.

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

  1. Disconnect the L4 position switch (No. 1 transfer indicator switch) connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A13-3 (EXI4) - C29-1
    		Always
    		Below 1 Ω
    A13-3 (EXI4) - Body ground
    		Always
    		10 kΩ or higher
    C29-2 - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.INSPECT L4 POSITION SWITCH

  1. Turn the ignition switch off.

  1. Remove the L4 position switch (No. 1 transfer indicator switch) (HILUX_TGN26 RM00000479C008X.html).

  1. Inspect the L4 position switch (No. 1 transfer indicator switch) (HILUX_TGN26 RM0000015HR00KX.html).



NG
REPLACE NO. 1 TRANSFER INDICATOR SWITCH (HILUX_TGN26 RM00000479C008X.html)
OK

USE SIMULATION METHOD TO CHECK (HILUX_TGN26 RM000004QR7004X.html)