W/Harness Inspection

Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness and terminal condition. 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 or replace if necessary and go to "Verification of Vehicle Repair" procedure
NO
- Go to "Power Circuit Inspection" procedure.

Power Supply Circuit Inspection

1. IG "OFF" & ENG "OFF"
2. Disconnect fuel pump relay.
3. IG "ON" & ENG "OFF"
4. Measure voltage between harness terminal 30 (85) of chassis ground.
A. Specification : B+




5. Is the measured voltage within specification ?
YES
- Go to "Control Circuit Inspection" procedure.
NO
- Check "Fuse" between fuel pump relay and main relay.
- Check "Fuse" between fuel pump relay and battery.
- Especially, if battery voltage at terminal 85 is not detected, replace the Main Relay.
- Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedure.

Control Circuit Inspection

1. IG "OFF"
2. Disconnect fuel pump relay.
3. IG "ON" & ENG "OFF"
4. Measure voltage between harness terminal 86 and chassis ground.
A. Specification : Approx. 2.5V




5. Is the measured voltage within specification ?
YES
- Go to "Component Inspection" procedure.
NO
- Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedure.