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 "Local CAN Communication line check" procedure.

Ignition "OFF"

Disconnect BSD ECU(RH) connector and BSD ECU(LH) connector.

Measure resistance between Pin No. 2(CAN-HIGH) of BSD ECU(RH/LH) connector and chassis ground.

Measure resistance between Pin No. 5(CAN-LOW) of BSD ECU(RH/LH) connector and chassis ground.

Ignition "OFF"

Disconnect Battery (-) terminal.

Disconnect BSD ECU(RH) connector and BSD ECU(LH) connector.

Measure resistance between Pin No. 2(CAN-HIGH) of the BSD ECU(RH) connector and Pin No. 2(CAN-HIGH) of the BSD ECU(LH) connector.

Measure resistance between Pin No. 5(CAN-LOW) of the BSD ECU(RH) connector and Pin No. 5(CAN-LOW) of the BSD ECU(LH) connector.

Is the measured resistance within specifications?

	▶ Go to "Component Inspection" procedure.
	▶ Repair open or short in Local CAN Communication line between BSD ECU(RH) and BSD ECU(LH) harness connector and then go to "Verification of vehicle Repair" procedure. ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure.