No fuelpump

EZONMENOW

MEMBER
2005 CHEVROLET EQUINOX
6 CYL

Trying to find out if ground wire side of fuel pump relay goes directly to PCM.I dont seem to have a diagram on this car. Cant get relay to turn on the pump.I think when they got fuse panel wet and shorted it out. It did a back feed and got the pcm driver as well

Wednesday, August 24th, 2011 AT 4:30 PM

6 Replies

WRENCHTECH

MECHANIC
20,761 POSTS

The trigger ground is controlled by the PCM but it only powers for 2 seconds when key is first turned on.

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Wednesday, August 24th, 2011 AT 4:51 PM

WRENCHTECH

MECHANIC
20,761 POSTS

See diagram

Image (Click to make bigger)

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Wednesday, August 24th, 2011 AT 6:18 PM

JDL

MECHANIC
16,098 POSTS

Thanks man, MOTORS shows the same wiring as yours, MOD doesn't. Your correct.

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Wednesday, August 24th, 2011 AT 6:39 PM

EZONMENOW

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21 POSTS

THNX.I found a used PCM for $65.00. Have friends at GM dealer there gona flash it for me for the brotherinlaw deal

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Wednesday, August 24th, 2011 AT 11:22 PM

WRENCHTECH

MECHANIC
20,761 POSTS

I wouldn't be so quick to condemn the PCM. Just because it's not turning the fuel pump on doesn't mean the computer is to blame and if it is, you need to find what burned it out before putting a new one in. Is it even giving you the 2 second prime?

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Wednesday, August 24th, 2011 AT 11:33 PM

EZONMENOW

MEMBER
21 POSTS

Iv fixed all the damage that I could find anyway. It has a code po230 fuelpump relay fault. Whats happened is was a detail shop and they powerwashed the fuse box. Melting the pump fuse and relay and it also melted the diod for the AC. But will check it agian for the 2 second ground agian just to make sure.

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Thursday, August 25th, 2011 AT 2:58 AM