W/Harness Inspection

Engine Control

P0459 Evaporative Emission System Purge Control Valve Circuit High - W/Harness Inspection

Terminal and Connector inspection

1. 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.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?






Control Circuit Inspection

Check Short in control circuit
1. IG "OFF" and disconnect PCSV connector.
2. IG "ON".
3. Measure voltage between control terminal of PCSV harness connector and chassis ground.

Specification : Approx. 3.5 V




4. Is the measured voltage within specification?