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. IG "OFF" and disconnect VIS connector.
2. IG "ON" and ENG "OFF"
3. Measure voltage between terminal 1 of VIS harness connector and chassis ground.

Specification : Approx. B+





4. Is the measured voltage within specification ?






Control Circuit Inspection

1. Check voltage
(1) IG "OFF" and disconnect VIS connector.
(2) IG "ON" and ENG "OFF"
(3) Measure voltage between terminal 2 of VIS harness connector and chassis ground.

Specification : Approx. 2.5V





(4) Is the measured voltage within specification ?





2. Check short in harness
(1) IG "OFF" and disconnect VIS connector and PCM connector.
(2) Measure resistance between terminal 2 of VIS harness connector and chassis ground.
(3) Measure resistance between terminals 1 and 2 of VIS harness connector.

Specification : Infinite





(4) Is the measured resistance within specification ?





3. Check open in harness
(1) IG "OFF" and disconnect VIS connector and PCM connector.
(2) Measure resistance between terminal 2 of VIS harness connector and terminal 71 of PCM harness connector.

Specification : Below 1 ohms





(3) Is the measured resistance within specification ?