Ignition "OFF" & Engine "OFF".

Remove bulb from instrument panel after removing instrument panel.

Apply 12 voltage to bulb and ground it so that the bulb is turned on.

Specification : Bulb is turned ON when applying 12V

Is the bulb turned ON ?

YES

▶ Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure .

NO

▶ Substitute with a known-good ECM and check for proper operation.

If the problem is corrected, replace ECM and then go to "Verification of Vehicle Repair" procedure.