What is stopping the fuel pump

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Damion Giacchino posted on 20 Jan 2012 10:36 PM

I'm working on a 2003 Mitsubishi Diamante 3.5l drove home the other night and parked. when i went to start it the next day it just cranked over and over. i could not hear the fuel pump running so pulled it out and bench tested it, it was fine. i received 2 trouble codes a P0340 and a P0335 camshaft sensor and crank sensor. Any ideas would be greatly appreciated 

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Codes P0335 and P0340 CKP and CMP signals were not detected for 2 seconds. The Cam and Crank sensor circuit may be shutting down the fuel due to a non-spark condition.

Check the electrical circuit for something the 2 sensors have in common.



5v VREF to the sensor

MFI relay

Open or shorted signal circuit

Sensor power circuit is open

Ground circuit is open

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Top 10 Contributor
203 Posts

Codes P0335 and P0340 CKP and CMP signals were not detected for 2 seconds. The Cam and Crank sensor circuit may be shutting down the fuel due to a non-spark condition.

Check the electrical circuit for something the 2 sensors have in common.



5v VREF to the sensor

MFI relay

Open or shorted signal circuit

Sensor power circuit is open

Ground circuit is open

Top 50 Contributor
Male
2 Posts

I am getting spark at plugs i tried spraying starting fluid in intake and still no start. found 4 relays under dash in center which one is fuel pump relay?

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