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 next step as below

Install a probe to 87 fuel pump relay using oscilloscope.

Engine ON/OFF

Check the changes of operation voltage for CVVL motor relay by the condition of engine operation.

ECU sets P1032 when the voltage is always 12V regardless of the condition of engine operation.

Is the measured voltage within specification ?

	▶ Go to next step as below.
	▶ Check the operation status of CVVL motor relay and short to battery of CVVL motor power supply and then go to "Verification of Vehicle Repair" procedure.