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
DESCRIPTION Refer to DTCs C0200/31, C0205/32, C1235/35, and C1236/36 (See page BC-17). DTCs C1273/73 to C1278/78 can be deleted when the speed sensor sends a vehicle speed signal or the Tes ...

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:

How to proceed with troubleshooting
HINT:  Use the following procedures to troubleshoot the dynamic laser cruise control system.  *: Use the intelligent tester 1 VEHICLE BROUGHT TO WORKSHOP 2 CUSTOMER PROBLEM ANALYSIS 3 PROBLEM SYMPTOM CONFIRMATION Result SYMPTOM SIMULATION 4 INSPECT BATTERY VOLTAGE Stan ...

Disassembly
1. REMOVE FRONT DISC BRAKE BUSH DUST BOOT (a) Using soft jaws on the vise, hold the front disc brake cylinder mounting LH in the vise through aluminum plates. (b) Using a screwdriver and hammer, remove the 2 front disc brake bush dust boots from the front disc brake cylinder mounting LH. ...

Disassembly
1. INSPECT UNDERDRIVE PACK CLEARANCE HINT: (See page AX-262) 2. REMOVE UNDERDRIVE CLUTCH FLANGE NO.2 HOLE SNAP RING a) Using a screwdriver, remove the underdrive clutch flange No.2 snap ring. 3. REMOVE UNDERDRIVE CLUTCH DISC NO.1 (a) Remove the flange, 4 discs and 4 plates from the ...

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