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.

Connect "ATM Control Unit(CLG01-B)" connector.

IGNITION "ON", ENGINE "OFF"

Measure voltage between power terminal of Pressure control Solenoid Valve harness connector and chassis ground.

Is the measured voltage within specifications ?

	▶ "Go to Ground Circuit" Inspection Procedure.
	▶ Check open or short in harness. Repair as necessary and then, go to "Verifcation of Vehicle Repair" procedure. ▶ If Power circuit is O.K, Substitute with a known-good TCM and check for proper operation. If the problem is corrected, replace TCM as necessary and go to "verification of vehicle repair" procedure.

Disconnect "ATM Control Unit(CLG01-B)" connector.

IGNITION "OFF", ENGINE "OFF".

Measure continuity between ground terminal of Pressure control solenoid Valve harness connector and chassis ground.

Is the measured resistance within specificatins ?

	▶ Go to "Component Inspection" procedure.
	▶ Check open in harness. Repair as necessary and then, go to " Verification of Vehicle Repari" procedure.