Many malfunctions in the electrical system are caused by poor connection. 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 "CAN Communication Line Inspection" procedure.

Ignition Switch "OFF".

Connect GDS to Data Link Connector(DLC) and select Oscilloscope.

Ignition switch "ON" , engine "OFF"

Measure signal waveform between Pin No. 2 (High) terminal of DLC and chassis ground.

Measure signal waveform between Pin No. 1 (Low) terminal of DLC and chassis ground.

Fig.1) Normal Signal Waveform of C-CAN

Are the measured value within specification?

	▶ If no problems were found with the circuits or connectors, Replace the instrument cluster and go to "Verification of Vehicle Repair" procedure.
	▶ Check for open in CAN(High) and CAN(Low) communication line and SRSCM, and repair as necessary and then go to "Verification of Vehicle Repair" procedure.