Many malfunctions in the electrical system are caused by poor harness 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.

Disconnect "Sports Mode Switch" connector.

Ignition "ON" & Engine "OFF".

Measure voltage between ON/START input terminal of PCM/TCM harness connector and chasssis ground.

Is the meausred voltage within specifications ?

	▶ Go to "Signal Circuit Inspection" procedure.
	▶ Check fuse is blown off or open or short in harness. Repair as necessary and then, go to "Verification of Vehicle Repair" procedure.

Disconnect "TCM" connector.

Ignition "ON" & Engine "OFF".

Shift to sports mode position and select shift up and down.

Measure voltage between up and down terminal of TCM harness connector and chassis ground.

Is the measured voltage within specifications ?

	▶ Substitute with a known-good "PCM/TCM" and check for proper operation. If the problem is corrected, replace "PCM/TCM" and Go to "verification of vehicle repair" procedure.
	▶ Check open or short in harness. Substitute with a known-good "Sports Mode Switch" and check for proper operation. If the problem is corrected, replace "Sports Mode Switch" and Go to "verification of vehicle repair" procedure.