Toyota RAV4 manuals

Toyota Sienna Service Manual: Master Cylinder Pressure Sensor Malfunction

DTC C1246/46 Master Cylinder Pressure Sensor Malfunction

DESCRIPTION

Master cylinder pressure sensor is connected to the skid control ECU in the actuator.

Master Cylinder Pressure Sensor Malfunction

INSPECTION PROCEDURE

1 READ VALUE ON INTELLIGENT TESTER (MASTER CYLINDER PRESSURE SENSOR)

(a) Connect the intelligent tester to the DLC3.

(b) Start the engine.

(c) Select the DATA LIST mode on the intelligent tester.

ABS / VSC:

(d) Check that the brake fluid pressure value of the master cylinder pressure sensor indicated on the intelligent tester, changes when the brake pedal is depressed.

OK: Brake fluid pressure value should change.

NOTICE: When replacing the brake actuator assembly, perform zero point calibration (See page BC-70).

REPLACE BRAKE ACTUATOR ASSEMBLY

2 INSPECT SKID CONTROL ECU (STP1 TERMINAL)

INSPECT SKID CONTROL ECU (STP1 TERMINAL)

(a) Disconnect the skid control ECU connector.

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

Standard voltage

NOTICE: When replacing the brake actuator assembly, perform zero point calibration (See page BC-70).

REPLACE BRAKE ACTUATOR ASSEMBLY

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