Re: 9-5 Won't start - DIC problem? - Saab 9-5 Bulletin Board - Saabnet.com
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Re: 9-5 Won't start - DIC problem?
Posted by Dean (more from Dean) on Tue, 8 Mar 2011 12:30:41
In Reply to: Re: 9-5 Won't start - DIC problem?, LesH, Tue, 8 Mar 2011 12:11:25
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He states that he can hear the fuel pump running. The fuel pump is activated for a second or two when ignition is turned on. Then it stays off until the engine is cranked. The only way that the ECU knows that the engine is been cranked is via the CPS. So if CPS is dead, the pump will not be on. One can check for power on the fuel pump fuse, which is powered by the fuel pump relay, which is activated when the CPS shows engine turns.
Check voltage at fuel pump fuse while cranking. Smell gas at exhaust or on plugs?
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