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2) Simulate An Opposite FRP Sensor Signal z Key off. z Disconnect the FRP sensor connector C106. z Key on, engine off. z Monitor the FRPREAB PID. z Install a 5-amp fused jumper wire between the FRP sensor connector C106 signal circuit, harness Is the FRPREAB PID greater than 140 psi (965 kPa)? If yes, install a new FRP sensor. If no, go to next 3) Check The FRP Sensor VREF And Signal Circuits For An Open z Key off. z Disconnect the AFCM connector C1427. z Measure the resistance between the FRP sensor C106 VREF circuit, harness side and the AFCM z Measure the resistance between the FRP sensor connector C106 signal circuit, harness side and the Are the resistances less than 5 ohms? If yes, go to next step. If no, repair the circuit in question. 4) Check The FRP Sensor Signal Circuit For A Short To Ground z Measure the resistance between the FRP sensor connector C106 signal circuit, harness side and z Measure the resistance between the FRP sensor connector C106 VREF circuit, harness side and Are the resistances less than 5 ohms? If yes, go to step 9) . If no, repair the circuit in question. 5) Simulate An Opposite Sensor Signal z Key off. z Disconnect the FRP sensor connector C106. z Key on, engine off. z Monitor the FRPREAB PID. Is the FRPREAB PID less than 5 psi (34 kPa)? If yes, go to step 8) . If no, go to next step. 6) Check The FRP Sensor Signal Circuit For A Short To VREF z Key off.
2003 Ford Pickup F150 2003 ENGINE PERFORMANCE Self-Diagnostics - Bi-Fuel - Gasoline/CNG
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