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assumedruz
PostPosted: Thu Jan 24, 2013 11:48 pm 
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Joined: Sun Mar 27, 2011 8:39 pm
Posts: 19
Location: Haines City, Florida
Year and Trim: 2002 Bonneville SSEi
what could be the cause of this dtc.
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Archon
PostPosted: Sat Jan 26, 2013 1:26 am 
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Joined: Mon May 19, 2008 10:30 pm
Posts: 8781
Location: Grand Rapids, Michigan
Year and Trim: 2014 Cadillac XTS Vsport.
Have you done any modifications that changes when the cooling fans run? If not:

Quote:
DIAGNOSTIC AIDS
Check for the following conditions:

A faulty connection at PCM, Inspect harness connectors for the following conditions:
Backed out terminals
Improper mating
Broken locks
Improperly formed or damaged terminals
Faulty terminal to wire connections
Inspect the wiring harness for damage.
If the harness appears to be OK, disconnect the PCM, turn the ignition ON and observe a DMM connected between the fan 1 relay driver circuit and ground at the PCM harness connector while moving connectors and wiring harnesses related to the fan 1 relay. A change in voltage will indicate the location of the fault.

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*Gone, but not forgotten* - Black 2000 SSEi, HIR Headlights, Angel Eyes fogs, 3rd brake light overlay, hi-flo cat, 180 degree thermostat, HS 1.9 rockers, LSx yellow springs, Intense FWI, PCM, shift kit, push rods, and 3.4 Pulley. ZZP Power Log.
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Portal » Board index » Mechanical and Maintenance (no chat or performance) » 2000-2005 (other than GXP)

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