10651059

Termminal & Connector Inspection

Many malfunctions in the electrical system are caused by poor harness(es) and terminal condition. Faults can also becaused by interference from other electrical systems, and mechanical systems 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 Inspection procedure.

CAN Communication Inspection

■ CAN Communication Inspection

Install all the control unit (Module)

Ignition "ON"& Engine "OFF"

Measure signal waveform between C-CAN-HIGH connector of SPAS ECU and chassis ground.

Measure signal waveform between C-CAN-LOW connector of SPAS ECU and chassis ground.

Specification : Refer to Signal waveform at Reference Data in General Information

Is the measured value within specifications?

▶ Go to check open in CAN communication Line

▶ If the measured value is battery voltage, check that it is short to battery in the circuit. Then, go to "Verification of Vehicle Repair" procedure.

▶ If the measured value is approx. "0V', check that it is short to ground, open or short in CAN High & Low. Then, go to "Verification of Vehicle Repair" procedure.

■ Check open in CAN Communication Line

Ignition "OFF"& Engine "OFF"

Disconnect the CLU(Cluster) connector and SPAS connector.

Check open in harness between CAN communication line of SPAS ECU and CLU(Cluster).

Specification : about lower 1Ω

Is the measured value within specifications?

▶ Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage in the SPAS ECU and CLU(Cluster).

Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.

▶ Substitute with a known-good Sampe of CLU(Cluster) and check for proper peration.

If problem is corrected, replace CLU(Cluster) and then go to "Verification of Vehicle Repair" procedure.

▶ Repair open in CAN communication line. Then, go to "Verification of Vehicle Repair" procedure.