Toyota RAV4 manuals

Toyota Sienna Service Manual: Cooling fan ecu

ON-VEHICLE INSPECTION

1. INSPECT COOLING FAN ECU

INSPECT COOLING FAN ECU

(a) Inspect the input voltage.

(1) Disconnect the cooling fan ECU connector.

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

Check the voltage of the +B terminal of the disconnected wire harness side connector.

Standard voltage: 9 to 14 V

If the result is not as specified, inspect the power source system (fusible link, fuse, wire harness and relay).

(b) Inspect the cooling fan motor (See page CO-19).

(c) Measure the resistance between terminals RFC (ECM) and SI (cooling fan ECU) of the wire harness side connectors.V

HINT:

(d) Inspect the ECM power source circuit and ground circuit.

Cooling fan motor
On-vehicle inspection 1. No. 1 Cooling fan motor (A) check that the motor turns smoothly when the battery is connected to the fan motor connector. (B) measure the current while the motor is ...

Cooling fan relay
On-vehicle inspection 1. Cooling fan relay (a) Remove the relay from engine room relay block No. 1. (b) Measure the resistance of the relay. Standard resistance If the result is not as ...

Other materials:

Repair
1. STEERING OFF CENTER REPAIR PROCEDURE (a) Inspect steering wheel off center. (1) Apply masking tape to the top center of the steering wheel and steering column upper cover. (2) Drive the vehicle in a straight line for 100 meters at a constant speed of 35 mph (56 km/ h), and hold the ...

Transmission Error
DTC 01-DC Transmission Error DESCRIPTION   HINT: *1: This code may be stored if the engine is started, idled for 60 seconds and then started again. NOTICE:  Before starting troubleshooting, be sure to clear DTCs to erase codes stored due to the reasons described in the HINT ...

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 skid control ECU internal circuit. There is an open in the harness between the combination meter an ...

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