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:

Installation
1. INSTALL ECM  Install the ECM with the 2 nuts. Torque: 5.5 N*m (56 kgf*cm, 49 in.*lbf)  Connect the 5 ECM connectors. 2. INSTALL ECM (with 10 speakers system)  Install the ECM and stereo components amplifier with the 4 nuts. Torque: 5.5 N*m (56 kgf*cm, 49 ...

Removal
1. REMOVE FRONT WHEEL 2. REMOVE FRONT AXLE HUB LH NUT HINT: (See page AH-4) SST 09930-00010 3. SEPARATE SPEED SENSOR FRONT LH HINT: (See page AH-4) 4. SEPARATE FRONT DISC BRAKE CALIPER ASSEMBLY LH HINT: (See page AH-4) 5. REMOVE FRONT DISC 6. SEPARATE TIE ROD ASSEMBLY LH HINT: (See pa ...

Multiplex Communication Circuit
DESCRIPTION INSPECTION PROCEDURE 1 GO TO CAN COMMUNICATION SYSTEM (a) Refer to the CAN communication system (See page CA- 7). (b) If the CAN communication system is operating normally, proceed to the next step. 2 GO TO MULTIPLEX COMMUNICATION SYSTEM (BEAN) (a) Refer to the multiplex com ...

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