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 all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.

Has a problem been found?

	▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
	▶ Go to "CAN Communication Line Inspection" procedure.

Ignition switch "OFF"

Disconnect battery (-) cable.

Refer to "Shop Manual" and disconnect ECM and HECU connector.

Measure the resistance between Pin No. 64 (C-CAN High) terminal of ECM harness connector and Pin No. 26 (C-CAN High) terminal of Instrument Cluster harness connector.

Measure the resistance between Pin No. 81 (C-CAN Low) terminal of ECM harness connector and Pin No. 14 (C-CAN Low) terminal of Instrument Cluster harness connector.

Is the measured value within specification?

	▶ Go to "Component Inspection" procedure.
	▶ Repair open in C-CAN circuit and then go to "Verification of vehicle Repair" procedure.