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:

Short to GND in Front Passenger Side Squib 2nd Step Circuit
DTC B1187/55 Short to GND in Front Passenger Side Squib 2nd Step Circuit DESCRIPTION The front passenger side squib 2nd step circuit consists of the center airbag sensor assembly and the front passenger airbag assembly. The circuit instructs the SRS to deploy when deployment conditions are ...

Installation
1. INSTALL SPARK PLUG (a) Install the 6 spark plugs. Torque: 18 N*m (183 kgf*cm, 13 ft.*lbf) 2. INSTALL IGNITION COIL ASSEMBLY (a) Install the 6 ignition coils with the 6 bolts. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) (b) Connect the 6 ignition coil connectors. 3. INSTALL NO. 1 SUR ...

Hydraulic test
1. Perform hydraulic test (a) Measure the line pressure. NOTICE: Perform the test at the normal operating ATF (Automatic Transmission Fluid) temperature: 50 to 80°C (122 to 176°F). The line pressure test should always be carried out in pairs. One technician should ...

© 2011-2019 Copyright www.tsienna.net