Toyota RAV4 manuals

Toyota Sienna Service Manual: Brake Warning Light Remains ON

DESCRIPTION

The BRAKE warning light comes on when the brake fluid is insufficient, the parking brake is applied or the EBD is defective.

WIRING DIAGRAM

Brake Warning Light Remains ON

INSPECTION PROCEDURE

HINT: When releasing the parking brake, move the shift lever into the P position in an AT vehicle, and choke in an MT vehicle to hold the vehicle for safety.

1 CHECK BRAKE FLUID LEVEL

(a) Check that the brake fluid level is proper.

2 CHECK DTC

(a) Are the DTC recorded? (See page BC-82)

Result

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS

3 CHECK BRAKE WARNING LIGHT

ABS / VSC:

(a) WHEN USING INTELLIGENT TESTER: (1) Connect the intelligent tester to the DLC3.

(2) Start the engine.

(3) Select the item "BRAKE WARN LIGHT" in the ACTIVE TEST and operate the BRAKE warning light on the intelligent tester.

(4) Check that "ON" and "OFF" of the BRAKE warning light are indicated on the combination meter when using the intelligent tester.

OK: Turn the BRAKE warning light on or off in accordance with the intelligent tester.

(b) WHEN NOT USING INTELLIGENT TESTER: (1) Turn the ignition switch off and disconnect the connector from the skid control ECU.

CHECK BRAKE WARNING LIGHT

(2) Ground terminal BRL of the skid control ECU.

(3) Turn the ignition switch to the ON position.

(4) Check that the brake warning light.

OK: Turn the light on or off in accordance with the connection of terminal GND and BRL.

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

REPLACE BRAKE ACTUATOR ASSEMBLY

4 INSPECT PARKING BRAKE SWITCH

INSPECT PARKING BRAKE SWITCH

(a) Remove the parking brake switch connector.

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

Standard resistance

5 CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - PARKING BRAKE SWITCH)

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - PARKING BRAKE SWITCH)

(a) Disconnect the skid control ECU connector and the parking brake switch connector.

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

Standard resistance

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

Standard resistance

6 INSPECT BRAKE FLUID LEVEL WARNING SWITCH

INSPECT BRAKE FLUID LEVEL WARNING SWITCH

(a) Remove the reservoir tank cap and strainer.

(b) Disconnect the brake fluid level warning switch connector.

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

Standard resistance

7 CHECK HARNESS AND CONNECTOR (BRAKE FLUID LEVEL WARNING SWITCH - COMBINATION METER)

(a) Disconnect the combination meter connector and the brake fluid level warning switch connector.

CHECK HARNESS AND CONNECTOR (BRAKE FLUID LEVEL WARNING SWITCH -

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

Standard resistance

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

Standard resistance

REPAIR OR REPLACE COMBINATION METER ASSEMBLY

VSC Warning Light does not Come ON
DESCRIPTION The skid control ECU is connected to the combination meter via CAN and multiplex communications. If the skid control ECU stores DTCs to shut down TRAC and VSC operation, the VSC wa ...

TRAC OFF Indicator Light Remains ON
DESCRIPTION The skid control ECU is connected to the combination meter via CAN and multiplex communications. When the traction OFF switch is turned on, the TRAC OFF indicator light will come o ...

Other materials:

Removal
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 2. REMOVE REAR NO. 2 SEAT LEG SIDE GARNISH SUB-ASSEMBLY  Disengage the 9 clips and remove the rear No. 2 seat leg side garnish sub-assembly.  Remove the 9 clips from the rear No. 2 seat leg side garnish sub-assembly. 3. ...

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 to the motor relay (+BM) is below the DTCs detection threshold due to low voltage from the battery ...

Gyro Error
DTC 58-10 Gyro Error DTC 80-10 Gyro Error DESCRIPTION DTC No. DTC Detection Condition Trouble Area 58-10 Ground short, power supply short, or open circuit in the gyro signal Gyro sensor Radio and navigation assembly 80-10 ...

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