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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 connectors for looseness, poor connection, bending, corrosion, contamination, deterioration,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.

Is the measured value within specification ?

▶ Check ECM/PCM, 4WD ECM, TCM and ABS ECM connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.

▶ Check short to battery in communication line. And then, go to 'Verification of Vehicle Repair" procedure.

▶ Check short to ground in communication line. And then, go to 'Verification of Vehicle Repair" procedure.

Measure resistance between terminal CAN Low and CAN High of ECM/PCM.

Specification : About 120 Ω

Is the measured value within specification?

	▶ Go to next procedure.
	▶ Substitute with a known-good " Cluster " and check for proper operation. If the problem is corrected, replace " Cluster " and then go to "Verification of Vehicle Repair" procedure.