W/Harness Inspection

Power Circuit Inspection

1. Ignition "ON" & Engine "OFF".
2. Measure voltage between power supply terminals of fuel pump relay harness and chassis ground.

Specification : Approx. B+





3. Is voltage within the specification?






Control Circuit Inspection

1. Measure voltage between control terminal of Fuel Pump Relay harness connector and chassis ground.

Specification : 4 - 5V





2. 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?