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 "Rear Blower Switch Illumination Circuit Inspection" procedure.

IG "OFF", disconnect battery (-) terminal.

Disconnect RAM, Rear Blower Switch Illumination connector.

Measure resistance between the Rear Blower Switch Illumination terminal of RAM harness connector and chassis ground.

Is the measured resistance within specification?

	▶ 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.
	▶ Repair short to ground in circuit of Rear Blower Switch Illumination, and go to "Verification of Vehicle Repair" procedure.