W/Harness Inspection

Power Supply Circuit Inspection

1. Ignition "ON" & Engine "OFF"
2. Measure voltage between terminal 5 of the CCV harness connector and chassis ground

Specification : Approx. 5V




3. Is voltage within the specification ?






Control Circuit Inspection

1. Check for short to ground in control circuit
(1) Measure voltage between terminal 6 of the CCV harness connector and chassis ground

Specification : Approx. 4 - 5V




(2) Is voltage within the specification ?





2. Check for short to power in control circuit
(1) Ignition "OFF"
(2) Disconnect ECM connector
(3) Ignition "ON" & Engine "OFF"
(4) Measure voltage between terminal 6 of the CCV harness connector and chassis ground

Specification : Approx. 0V




(5) Is voltage within the specification ?






Terminal and Connector Inspection

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