Toyota RAV4 manuals

Toyota Sienna Service Manual: Open in Pump Motor Circuit

DTC C1251/51 Open in Pump Motor Circuit

DESCRIPTION

The motor relay (semiconductor relay) is housed in the brake actuator assembly and drives the pump motor based on a signal from the skid control ECU.

Open in Pump Motor Circuit

WIRING DIAGRAM

Refer to DTCs C0273/13 and C0274/14 (See page BC-31).

INSPECTION PROCEDURE

HINT: After step 1 is complete, start the inspection from step 2 when using the intelligent tester, and from step 3 when not using the intelligent tester.

1 INSPECT SKID CONTROL ECU (GND TERMINAL CONTINUITY)

 INSPECT SKID CONTROL ECU (GND TERMINAL CONTINUITY)

(a) Disconnect the skid control ECU connector.

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

Standard resistance

2 PERFORM ACTIVE TEST BY INTELLIGENT TESTER (ABS MOTOR RELAY)

(a) Reconnect the skid control ECU connector.

(b) Connect the intelligent tester to the DLC3.

(c) Turn the ignition switch to the ON position and turn the intelligent tester main switch on.

(d) Start the engine.

(e) Select the ACTIVE TEST mode on the intelligent tester.

ABS:

(f) Check operating sound of the ABS motor when operating it with the intelligent tester.

OK: The operating sound of the ABS motor is heard.

3 RECONFIRM DTC

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

(b) Start the engine.

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

(d) Check that the same DTC is recorded (See page BC- 10).

HINT:

Result

HINT:

REPLACE BRAKE ACTUATOR ASSEMBLY

Open in Stop Light Switch Circuit
DTC C1249/49 Open in Stop Light Switch Circuit DESCRIPTION This skid control ECU inputs the stop light switch signal and detects the status of brake operation. The skid control ECU has an open ...

ABS Warning Light Remains ON
DESCRIPTION If any of the following is detected, the ABS warning light remains on. The skid control ECU connectors are disconnected from the skid control ECU. There is a malfunction in the s ...

Other materials:

Video terminal
COMPONENTS REMOVAL 1. REMOVE REAR DOOR SCUFF PLATE LH 2. REMOVE REAR DOOR WEATHERSTRIP LH 3. REMOVE BACK DOOR WEATHERSTRIP 4. REMOVE BACK DOOR SCUFF PLATE 5. REMOVE QUARTER TRIM FRONT PANEL ASSEMBLY LH 6. REMOVE VIDEO(VIDEO ADAPTER) TERMINAL  Release the 4 claw fittings and ...

Brake Warning Light does not Come ON
WIRING DIAGRAM See page BC-52. INSPECTION PROCEDURE 1 INSPECT BRAKE WARNING LIGHT (a) Disconnect the skid control ECU connector. (b) Turn the ignition switch to the on position. (c) Check that the BRAKE warning light comes on. OK: BRAKE warning light comes on. HINT: If troubleshooting ...

Engine
GENERAL MAINTENANCE HINT: Inspect these items when the engine is cold. 1. INSPECT DRIVE BELT HINT: (See page EM-6) 2. REPLACE SPARK PLUGS HINT: (See page IG-8) 3. INSPECT AIR FILTER (a) Remove the air filter. (b) Visually check that the air filter is not excessively damaged or oily ...

В© 2011-2024 Copyright www.tsienna.net