Toyota RAV4 manuals

Toyota Sienna Service Manual: SFR Solenoid Circuit

SFR Solenoid Circuit

DESCRIPTION

The solenoid comes on when signals are received from the ECU and controls the pressure acting on the wheel cylinders, thus controlling brake force.

SFR Solenoid Circuit

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 RECONFIRM DTC

HINT: These codes are detected when a problem is identified in the brake actuator.

The solenoid circuit is in the brake actuator.

Therefore, solenoid circuit inspection and solenoid unit inspection cannot be performed. Be sure to check if any DTC is output before replacing the brake actuator assembly.

(a) Clear the DTCs (See page BC-10).

(b) Start the engine.

(c) Drive the vehicle at the speed of 4 mph (6 km/h) or more.

(d) Check that the same DTCs are recorded (See page BC- 10).

HINT: If a speed signal of 4 mph (6 km/h) or more is input to the skid control ECU, with the ignition switch on and the stop light switch off, the ECU performs self-diagnosis of the motor and solenoid circuits.

Result

HINT:

REPLACE BRAKE ACTUATOR ASSEMBLY

Rear Speed Sensor RH Circuit
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Open in ABS Motor Relay Circuit
DESCRIPTION The ABS motor relay supplies power to the ABS pump motor. While the ABS is activated, the ECU turns the motor relay on and operates the ABS pump motor. If the voltage supplied t ...

Other materials:

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System description
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