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 ?






Power Circuit Inspection

1. Engine "OFF"
2. Disconnect CCV connector.
3. Ignition "ON" & Engine "OFF".
4. Measure voltage between terminal "1" of CCV harness connector and chassis ground.

Specification : B+





5. Is the measured voltage within specifications ?






Control Circuit Inspection

1. Check for short to ground in harness.
(1) Ignition "OFF"
(2) Disconnect CCV connector
(3) Measure resistance between terminal "2" of CCV harness connector and chassis ground.

Specification : Infinite





(4) Is the measured resistance within specifications ?





2. Check for open in harness.
(1) Ignition "OFF"
(2) Disconnect CCV and PCM connector
(3) Measure resistance between terminal "2" of CCV harness connector and terminal "37" of PCM harness connector.

Specification : Approx. below 1 ohms





(4) Is the measured resistance within specifications ?