3.
Has a problem been found?
 | ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure. |
 | ▶ Go to "Power Circuit Inspection" procedure. |
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.
Thoroughly check all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.
Has a problem been found?
| ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure. |
| ▶ Go to "Power Circuit Inspection" procedure. |
Ignition "OFF".
Refer to "Shop Manual" and disconnect Fuel Pressure Sensor(FPS) connector.
Ignition "ON".
Measure voltage between Pin No. 1 (Power) terminal of Fuel Pressure Sensor(FPS) harness connector and chassis ground.
Specification : Approx. 5 V
Is measured value within specification?
| ▶ Go to "Ground Circuit Inspection" procedure. |
| ▶ Repair open or short in power circuit between Fuel Pressure Sensor(FPS) and PCM and then go to "Verification of vehicle Repair" procedure. |
Ignition "OFF".
Disconnect Battery (-) terminal.
Refer to "Shop Manual" and disconnect Fuel Pressure Sensor(FPS) connector.
Measure voltage between Pin No. 2 (Signal) terminal of Fuel Pressure Sensor(FPS) harness connector and chassis ground.
Specification : Approx. 5 V
Is measured value within specification?
| ▶ Go to "Signal Circuit Inspection" procedure. |
| ▶ Repair open or short in ground circuit of Fuel Pressure Sensor(FPS) and then go to "Verification of vehicle Repair" procedure. |
Ignition "OFF".
Refer to "Shop Manual" and disconnect Fuel Pressure Sensor(FPS) connector.
Ignition "ON".
Measure voltage between Pin No. 2 (Signal) terminal of Fuel Pressure Sensor(FPS) harness connector and chassis ground.
Specification : Approx. 5 V
Ignition "OFF"
Disconnect Battery (-) terminal.
Refer to "Shop Manual" and disconnect Fuel Pressure Sensor(FPS) connector.
Measure resistance between Pin No. 2 (Signal) terminal of Fuel Pressure Sensor(FPS) harness connector and chassis ground.
Specification : Infinite (∞) Ω
Is measured value within specification?
| ▶ Go to "Component Inspection" procedure. |
| ▶ Repair open or short in signal circuit of Fuel Pressure Sensor(FPS) and then go to "Verification of vehicle Repair" procedure. |
