Testing if scan tool display is approximately - 40.0°
-- Disconnect the Engine Coolant Temperature (ECT) Sensor - G62- electrical harness connector -arrow-.
-- Using a jumper wire, connect the Engine Coolant Temperature (ECT) Sensor -G62- electrical harness connector terminals 1 to 2.
-- Switch the ignition ON.
-- Check the value indicated on the scan tool display.
Specified value: scan tool display approximately 140.0° C
If the specified value was obtained:
-- End diagnosis and switch the ignition OFF.
-- Replace the Engine Coolant Temperature (ECT) Sensor - G62-. Refer to appropriate Service Information.
-- Go to Final procedures.
If the specified value was not obtained:
Checking wiring
-- Remove the Engine Control Module -J623 -. Refer to appropriate Service Information.
-- Using a Multimeter, check the Engine Coolant Temperature (ECT) Sensor - G62- electrical harness connector terminals to the Engine Control Module - J623- electrical harness connector T60 terminals for an open circuit according to the wiring diagram.
| Engine Coolant Temperature (ECT) Sensor - G62- electrical harness connector terminals: | Engine Control Module -J623- electrical connector T60 terminals: |
|---|---|
| 1 | 57 |
| 2 | 14 |
Specified value: 1.5 Ω Max.
If the specified value was not obtained:
-- Check the wiring for a short circuit to Battery voltage, or an open circuit.
-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection.
-- Go to Final procedures.
If the specified value was obtained:
-- Replace the Engine Control Module -J623 -. Refer to appropriate Service Information.
-- Go to Final procedures.