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?
YES
- Repair as necessary and go to "Verification of Vehicle Repair" procedure
NO
- Go to "Power Circuit Inspection" procedure.

Power Supply 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.
A. Specification : Approx. B+




4. Is the measured voltage within specification?
YES
- Go to "Control Circuit Inspection" procedure.
NO
- Check fuse connected to power of VIS for open or blown-off.
- Repair open or short to ground in harness, and go to "Verification of Vehicle Repair" procedure.

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.
A. Specification : Approx. 2.5V




(4) Is the measured voltage within specification?
YES
- Go to "Component Inspection" procedure.
NO
- Go to "Check short in harness" as follows.
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.
A. Specification : Infinite








(4) Is the measured resistance within specification?
YES
- Go to "Check open in harness" as follows.
NO
- Repair short in harness, and go to "Verification of Vehicle Repair" procedure.
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.
A. Specification : Below 1 Ohm




(3) Is the measured resistance within specification?
YES
- Go to "Component Inspection" procedure.
NO
- Repair open in harness, and go to "Verification of Vehicle Repair" procedure.