C1359

BRAKE CONTROL: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C1315/31: SMC1 Changeover Solenoid Malfunction

DTC C1315/31 - SMC1 Changeover Solenoid Malfunction

DTC C1316/32 - SMC2 Changeover Solenoid Malfunction

DTC C1352/21 - Front Increasing Pressure Solenoid RH Malfunction

DTC C1353/23 - Front Increasing Pressure Solenoid LH Malfunction

DTC C1354/25 - Rear Increasing Pressure Solenoid RH Malfunction

DTC C1355/27 - Rear Increasing Pressure Solenoid LH Malfunction

DTC C1356/22 - Front Decreasing Pressure Solenoid RH Malfunction

DTC C1357/24 - Front Decreasing Pressure Solenoid LH Malfunction

DTC C1358/26 - Rear Decreasing Pressure Solenoid RH Malfunction

DTC C1359/28 - Rear Decreasing Pressure Solenoid LH Malfunction

DESCRIPTION

Each solenoid adjusts pressure which affects each wheel cylinder according to signals from the skid control ECU and controls the vehicle.
The master cut solenoid (SMC 1/2) is closed and blocks the master cylinder pressure from the Electronically Controlled Brake control pressure when the system is normal. The master cut solenoid is open and sends the master cylinder fluid pressure to the non-assisted brake wheel cylinders during the fail-safe due to system malfunction.













WIRING DIAGRAM









INSPECTION PROCEDURE

NOTE: When replacing the skid control ECU, perform initialization of linear solenoid valve and calibration.

PROCEDURE

1. INSPECT BRAKE ACTUATOR ASSEMBLY





(a) Disconnect the brake actuator connector.
(b) Measure the resistance of the actuator.

HINT: Check the brake actuator when it is cooled down.

Standard resistance:





NG -- REPLACE BRAKE ACTUATOR ASSEMBLY
OK -- Continue to next step.
2. CHECK SKID CONTROL ECU (VALVE VOLTAGE)





(a) Measure the voltage of the ECU connector.
Standard voltage:





HINT: *: Refer to waveform 5 of "TERMINALS OF ECU".

NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE SKID CONTROL ECU