W/Harness Inspection

Engine

Engine Control - P0230 Fuel Pump Primary Circuit - 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 Supply Circuit Inspection

1. IG "OFF" & ENG "OFF"
2. Disconnect fuel pump relay.
3. IG "ON" & ENG "OFF"
4. Measure voltage between harness terminal 1 (5) of chassis ground.

Specification : B+




5. Is the measured voltage within specification?






Control Circuit Inspection

1. IG "OFF"
2. Disconnect fuel pump relay.
3. IG "ON" & ENG "OFF"
4. Measure voltage between harness terminal 3 and chassis ground.

Specification : Approx. 2.5 V ~ 3 V




5. Is the measured voltage within specification?