W/Harness Inspection

Engine Control
P0193 Fuel Rail Pressure Sensor Circuit High Input - Inspection/Repair:_: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 ?






Signal Circuit Inspection

Check voltage
1. IG "OFF" & Disconnect fuel rail pressure sensor connector.
2. IG "ON".
3. Measure voltage between signal terminal of fuel rail pressure sensor harness connector and chassis ground.

Specification :signal - approx. 5V




4. Is the measured voltage within specification ?





Check short to power
1. IG "OFF" & Disconnect fuel rail pressure sensor and PCM connector.
2. Measure resistance between power and signal terminal of fuel rail pressure sensor harness connector.

Specification :Infinite




3. Is the measured resistance within specification ?






Ground Circuit Inspection

Check open
1. IG "OFF" & Disconnect fuel rail pressure sensor and PCM connector.
2. Measure resistance between ground terminal of fuel rail pressure sensor harness connector and chassis ground.

Specification :below 1Ohms




3. Is the measured resistance within specification ?