With Ignition OFF, remove the main relay.

Measure resistance between power terminal and control terminal of the main relay(Component side).

Apply 12V and a ground to power and control terminals of the main relay(Components side).

Check if the main relay works well when it is energized. (If the main relay works normally, a clicking sound can be heard.)

Does the main relay operate normally?

	▶ Go to next step as below.
	▶ Check main relay for contamination, deterioration, or damage. Substitute with a known-good main relay and check for proper operation. If the problem is corrected, replace main relay and then go to "Verification of Vehicle Repair" procedure.