3.
Has a problem been found?
 | ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure. |
 | ▶ Go to "Control 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 "Control Circuit Inspection" procedure. |
Ignition "OFF".
Refer to "Shop Manual" and disconnect Fuel Pressure Regulator connector.
Ignition "ON".
Measure voltage between Pin No. 2 (Low) terminal of Fuel Pressure Regulator harness connector and chassis ground.
Specification : Approx. 2.5 V
Is measured value within specification?
| ▶ Go to "Control(High) Circuit Inspection" procedure. |
| ▶ Repair open or short in control(Low) circuit between Fuel Pressure Regulator and PCM and then go to "Verification of vehicle Repair" procedure. |
Ignition "OFF".
Disconnect Battery (-) terminal.
Refer to "Shop Manual" and disconnect Fuel Pressure Regulator and PCM connector.
Measure resistance between Pin No. 1 (High) terminal of Fuel Pressure Regulator harness connector and Pin No. 90 (High) terminal of PCM harness connector.
Specification : Approx. below 1 Ω
Is measured value within specification?
| ▶ Go to "Component Inspection" procedure. |
| ▶ Repair open or short in control(High) circuit between Fuel Pressure Regulator and PCM and then go to "Verification of vehicle Repair" procedure. |
