W/Harness Inspection

Engine Control
P0448 Evaporative Emission System - Vent Control Circuit Shorted - Inspection/Repair:_:W/Harness Inspection

Terminal & Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness and terminal connections.
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 harness
1. IG "OFF" and disconnect CCV connector.
2. IG "ON".
3. Measure voltage between control terminal of CCV harness connector and chassis ground.

Specification :Approx. 3.5V




4. Is the measured voltage within specification ?