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:

Adjustment procedure
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Engine rear oil seal
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Installation
1. INSTALL OUTSIDE MOULDING Using a heat light, heat the mounting surface of the vehicle body between 40 to 60 C (104 to 140 F). NOTICE: Do not heat the body excessively. Remove the tape from the vehicle body. Wipe off the stains with cleaner. Clean the outside moulding (if reusing t ...

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