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 then go to "Verification of Vehicle Repair" procedure.
	▶ Go to "Signal Circuit Inspection" procedure.

Ignition "OFF" & Engine "OFF".

Disconnect HECU and SAS connector.

Measure resistance between CAN HIGH(LOW) terminal of the HECU harness connector and CAN HIGH(LOW) terminal terminal of the SAS harness connector.

Is the measured resistance within specifications?

	▶ Go to "Component Inspection" procedure.
	▶ Repair open in CAN BUS line between HECU harness connector and SAS harness connector and then go to "Verification of Vehicle Repair" procedure.