Testing if scan tool display approximately 140.0° C
-- Disconnect the Engine Coolant Temperature (ECT) Sensor -G62- electrical harness connector -arrow-.
-- Switch the ignition ON.
Specified value: scan tool display approximately -40.0° C
If the specified value was obtained:
-- End diagnosis and switch 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 | 50 |
| 2 | 27 |
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.
Final procedures
-- Reinstall the engine cover with air filter, if necessary. Refer to the appropriate Service Information.
-- After the repair work, the following work steps must be performed in the following sequence:
- Check the DTC memory. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY .
- If necessary, erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
- If the DTC memory was erased, generate readiness code. Refer to READINESS CODE .