Test Procedure

-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK

Start diagnosis

-- Disconnect the Radiator Identification Sensor -G611- electrical harness connector.

-- Turn the ignition switch ON.

-- Using a multimeter, connect the red multimeter lead to terminal 3 of the Radiator Identification Sensor -G611- module connector and the black lead to ground.

Specified value: Battery voltage.

If the specified value was Not obtained:

-- Check for an open or grounded circuit between terminal 3 and Fuse for an open, short or high resistance in circuit (Refer to applicable wiring diagram for fuse positions).

-- Repair the circuit and replace any open fuses.

If the specified value was obtained:

-- Connect the black multimeter lead to terminal 1 of the Radiator Identification Sensor -G611- harness connector and the red lead to Battery positive.

Specified value: Battery voltage.

If the specified value was Not obtained:

-- Check for an open circuit or high resistance between Radiator Identification Sensor -G611- terminal 1 and the Engine Control Module -J623- connector terminal 52.

Checking wiring

-- Disconnect the Engine Control Module -J623- T94 electrical harness connector.

-- Disconnect the Radiator Identification Sensor -G611- module T3 electrical harness connector.

-- Using a multimeter, check the Engine Control Module -J623- T94 electrical harness connector terminal 64 to the Radiator Identification Sensor -G611- module T3 electrical harness connector terminal 2 for resistance.

Specified value: 1.5 Ω max

If the specified value was Not obtained:

-- Check the wiring connection for damage, corrosion, loose or broken terminals.

-- If necessary, repair the faulty wiring connection.

If the specified value was obtained:

-- Replace the Radiator Identification Sensor -G611- (radiator assembly). Refer to the Repair Information.