Many malfunctions in the electrical system are caused by poor harness(es) 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 " Signal Circuit Inpsection " procedure.

IG "ON" & ENG "OFF".

Connect GDS and select Scope meter fucntion.

Measure signal waveform of PDM CAN High line.

Is the measured signal waveform of CAN high circuit normal ?

	▶ Go to next procedure
	▶ Check short to battery / ground in CAN high circuit, and repair or replace as necessary. Go to "Verification of Vehicle Repair" procedure.

IG "ON" & ENG "OFF"

Connect GDS and select Scope meter fucntion.

Measure signal waveform of PDM CAN Low line.

Is the measured signal waveform of CAN low circuit normal ?

	▶ Go to next procedure.
	▶ Check short to battery/ground in CAN low circuit and, repair or replace as necessary. And then, go to 'Verification of Vehicle Repair" procedure.