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 go to "Verification of vehicle Repair" procedure.
	▶ Go to "CAN communication circuit inspection" procedure.

IG "OFF".

Disconnect CAN communication modules.

Measure resistance between CAN-HIGH terminal of DLC harness connector and and chassis ground.

Measure resistance between CAN-LOW terminal of DLC harness connector and and chassis ground.

Is the measured value within specification?

	▶ Go to "Check CAN BUS Short to battery" procedure.
	▶ Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedue.

IG "OFF".

Disconnect CAN communication modules.

IG "ON".

Measure the voltage between CAN-HIGH terminal of DLC harness connector and and chassis ground.

Measure the voltage between CAN-LOW terminal of DLC harness connector and and chassis ground.

	▶ Go to "Check open in CAN BUS line" procedure.
	▶ Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedue.

IG "OFF".

Disconnect CAN communication modules.

Measure resistance between CAN-HIGH terminal of Data Link Connector and CAN-HIGH terminal of each module.(Measurement "A")

Measure resistance between CAN-LOW terminal of Data Link Connector and CAN-LOW terminal of each module.(Measurement "B")

Is the measured value within specification?

	▶ Go to "Component Inspection" procedure.
	▶ Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedue.