Vehicle Stability Control System (For Hydraulic Brake Booster)

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (for Hydraulic Brake Booster): C1268/68: Transfer "L4" Position Switch Circuit
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

NOTICE:
When replacing the master cylinder solenoid, perform zero point calibration Vehicle Stability Control System (for Hydraulic Brake Booster).

PROCEDURE

1. INSPECT SKID CONTROL ECU (EXI TERMINAL VOLTAGE)

(a) Disconnect the S1 skid control ECU connector.





(b) Turn the ignition switch to ON.

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

Standard Voltage:





(d) Turn the ignition switch 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.

Result





B -- REPAIR TRANSFER INDICATOR SWITCH CIRCUIT (L4 POSITION)
A -- Continue to next step.

3. RECONFIRM DTC

(a) Clear the DTCs Vehicle Stability Control System (for Hydraulic Brake Booster).

(b) Check if the same DTCs are recorded.

Result





B -- END

A -- REPLACE MASTER CYLINDER SOLENOID Disassembly

4. INSPECT TRANSFER INDICATOR SWITCH (L4 POSITION)

(a) Remove the transfer indicator switch (L4 position).





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

Standard Resistance:





(c) Reinstall the transfer indicator switch (L4 position).

NG -- REPLACE TRANSFER INDICATOR SWITCH Disassembly
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - TRANSFER INDICATOR SWITCH (L4 POSITION))

(a) Disconnect the S1 skid control ECU connector.





(b) Disconnect the transfer indicator switch (L4 position) connector.

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

Standard Resistance:





(d) Reconnect the transfer indicator switch (L4 position) 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 E13 ECM connector.





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

Standard Resistance:





(c) Reconnect the ECM connector.

(d) Reconnect the skid control ECU connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE MASTER CYLINDER SOLENOID Disassembly