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?

   YES 

   • Go to "COMPONENT INSPECTION " procedure.

   NO 

   • Repair open in signal circuit of the fuel rail pressure sensor and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ 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?

   YES 

   • Go to "GROUND CIRCUIT INSPECTION " procedure.

   NO 

   • Repair short to power in signal circuit of the fuel rail pressure sensor and go to "VERIFICATION OF VEHICLE REPAIR " procedure.