Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.

Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

Has a problem been found?

	▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.
	▶ Go to "Power Circuit Inspection" procedure.

IG "OFF" or IG "ON" & ENG "OFF"

Depress windshield defog switch.

Measure the rear windshield defog working signal voltage of RAM.

Is the signal output normal?

	▶ Substitute with a known - good RAM and check for proper operation. If the problem is corrected, replace the RAM and go to "Verification of Vehicle Repair" procedure.
	▶ Check for rear windshield defog fuse and relay, open or short in circuit of rear windshield defog relay singnal. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure.