C1268

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1268/68: Transfer "L4" Position Switch Circuit

DTC C1268/68 - Transfer "L4" Position Switch Circuit

DESCRIPTION

A-TRAC is activated if wheel skid is detected while the transfer is in the L4 position.





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTE: When replacing the master cylinder solenoid, perform zero point calibration (Programming and Relearning).

PROCEDURE

1. INSPECT SKID CONTROL ECU (EXI4 TERMINAL VOLTAGE)





(a) Disconnect the skid control ECU connector.
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage.
Standard:





(d) Turn the ignition switch to OFF.
(e) Reconnect the skid control ECU connector.
NG -- INSPECT TRANSFER INDICATOR SWITCH (L4 POSITION)
OK -- Continue to next step.
2. PERFORM TEST MODE INSPECTION (SIGNAL CHECK)
(a) Check if the test mode DTC (C1283/83) is detected.





B -- REPAIR TRANSFER INDICATOR SWITCH CIRCUIT (L4 POSITION)
A -- Continue to next step.
3. RECONFIRM DTC
(a) Clear the DTCs (Reading and Clearing Diagnostic Trouble Codes).
(b) Check if the same DTCs are recorded.





B -- END
A -- REPLACE MASTER CYLINDER SOLENOID
4. INSPECT TRANSFER INDICATOR SWITCH (L4 POSITION)





(a) Disconnect the transfer indicator switch (L4 position) connector.
(b) Remove the transfer indicator switch (L4 position).
(c) Measure the voltage.
Standard:





(d) Reinstall the transfer indicator switch (L4 position).
(e) Reconnect the transfer indicator switch (L4 position) connector.
NG -- REPLACE TRANSFER INDICATOR SWITCH
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - TRANSFER INDICATOR SWITCH (L4 POSITION))





(a) Disconnect the skid control ECU connector.
(b) Disconnect the transfer indicator switch (L4 position) connector.
(c) Measure the resistance.
Standard:





(d) Reconnect the transfer indicator switch (L4 position) connector.
(e) Reconnect the skid control ECU connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
6. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - ECM)





(a) Disconnect the skid control ECU connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance.
Standard:





(d) Measure the resistance.
Standard:





(e) Reconnect the ECM connector.
(f) Reconnect the skid control ECU connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MASTER CYLINDER SOLENOID