94 Bonneville se....Help - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-02-2008, 06:06 PM   #1
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Default 94 Bonneville se....Help

Having trouble with the obd 2 connection..keep getting error msg....the car ran through a large body of water and the voltage meter drop to 8v and the check engine light came on, the car still runs but it is in limp mode...I have the innova 1003c scanner and it worked fine till last wk..it picked up a bad map sensor last yr...car has 104233miles and I like to keep going..could the pcm be fried, resulting in the error msg.......Help !

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Old 05-02-2008, 07:38 PM   #2
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92-93 = OBD1
94-95 = OBD1.5
96+ = OBD2

It'* an OBD1 PCM with OBD2 codes and connector.

Check this thread to figure out how to read the codes: http://www.bonnevilleclub.com/forum/...ht=actron+9145
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Old 05-05-2008, 12:06 AM   #3
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Default 94 Bonneville...Help

Would anyone know the location of the ecm fuse......having problem connecting with scanner....

Thx...
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Old 05-05-2008, 12:22 AM   #4
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According to the owner'* manual, the ECM fuse is in position #8 in the passenger side relay center. Has this scanner been used on your car in the past without any problems?
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Old 05-05-2008, 10:50 AM   #5
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Default 94 Bonneville...Help

Thanks for the reply Ted...I'm really not sure if it'* the same scanner, my neighbor did the testing, but in any event I ordered the Actron Cp9145 due in this wk.
Autozone tech used a cp9175 and it would not read...Another mechanic tried his very large snap-on scanner...still did not read....going to check that #8 fuse again....I'm the original owner of this vehicle and would like to keep it going...but something tells me the ecm is bad, no cruise control.....if you have any other ideas on this, I would be more than happy to hear...

Thx...gman
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Old 05-05-2008, 11:55 AM   #6
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94 & 95 ECM'* are the most troublesome. If you don't want to wait for the scanner then you might want to get one from a junkyard. Make sure you can return it for cash if it doesn't fix your problem.
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