Checking wiring
If the manufacturers test box is being used. Perform the following step.
Install the test box.
If the manufacturers test box is not being used. Perform the following step.
Remove the Engine Control Module (ECM) -J623-. Refer to the Repair Information.
Using a multimeter, check the Engine Coolant Temperature (ECT) Sensor - G62- electrical harness connector terminals to the Engine Control Module (ECM) -J623- electrical harness connector T121 terminals for resistance.
| Engine Coolant Temperature (ECT) Sensor - G62- electrical harness connector terminals | Engine Control Module (ECM) -J623- electrical connector 121 terminals or test box socket |
|---|---|
| 1 | 93 |
| 2 | 108 |
Specified value: 1.5 ohms Max.
If the specification was Not obtained
Check the wiring for an open circuit, high resistance, a short circuit to each other, Battery (+) or Ground.
Check the electrical harness connector for damage, corrosion, loose or broken terminals.
If necessary, repair the faulty wiring connection.
If the specification was obtained
Erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
Perform a road test to verify repair.
If the DTC does not return
Generate readiness code. Refer to READINESS CODE .
If the DTC returns, no malfunction is found in the wiring and the voltage supply not was OK
Replace the Engine Control Module (ECM) -J623-. Refer to the Repair Information.
Assembly is performed in the reverse of the removal.