Cadillac CTS-V 2004-2007 (Gen I) The Caddy with an Attitude...

Reinstalled motor, abs light on?

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Old 05-20-2014 | 02:36 AM
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Default Reinstalled motor, abs light on?

Finally got my car back together and lined out after some fueling changes. Last issue I have to resolve and not sure exactly why is the abs/brake/tc light is staying illuminated. Tried scanning the abs module with my buddies snap on solus, but it kept saying no communication to the abs module. Everything else would scan and self test thru the scanner besides the abs stuff. Motor was pulled out of the bay, none of the abs stuff was physically unplugged but car sat for 2 months with no battery/motor in it. Isn't throwing any codes, abs/brake/tc light just stays illuminated. Checked all the engine bay connections at the abs module etc, all are fastened as they should be since they wasn't unhooked. Any ideas on how to find out whats wrong? All the fuses in the engine bay and both panels under rear seat have good fuses/relays none blown. Anyway to ohm sensors etc to get a direction of where the problem is? Unsure how the cts abs system works, or if theirs a way to bleed the pump, reset the system etc. any tips? Thx
Old 05-20-2014 | 09:12 AM
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Did you snap/disconnect any of the lines going to the ABS module? The Module may have went bad as well. I had to replace one on my girl's '07 SRX a few months ago.
Old 05-20-2014 | 10:01 AM
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No nothing was hit or anything of that nature. Nothing unplugged. Anyway to test the module?

Car drives normal but lights are illuminated the entire time.
Old 05-20-2014 | 11:03 AM
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That thing get pretty wet when you pull radiator hoses. I would pull the connectors and look for any signs of coolant or water in the connectors.
Old 05-20-2014 | 05:43 PM
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Yeah it prolly got wet. Ill pull the connections and clean them.
Old 05-21-2014 | 09:02 PM
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Pulled the plugs today finally. Terminals was wet so I cleaned them with electronic cleaner and restarted the car. Abs is still on. I probed the terminals with a test light and the large connector has power at 2 of the larger pins, so ima assume its getting the correct juice. Any ideas?

Whats the small plug on the passenger side of the pump?
Old 05-21-2014 | 09:23 PM
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Paging darkman.
Old 05-21-2014 | 10:11 PM
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When I re-installed my motor I somehow had one of the ABS wiring harness connectors swapped with the fan wiring harness connector. Dumb mistake but easy fix. Had same issue you described and cleared the lights once they were re-routed. Might just double check as the connectors match right up so could easily be overlooked.
Old 05-21-2014 | 10:19 PM
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I'm at work now can't look at the harness but dnt believe I seen any connector that matched besides the 2 fan plugs? Driver side u talking about
Old 05-21-2014 | 10:55 PM
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Originally Posted by 05maroonv
I'm at work now can't look at the harness but dnt believe I seen any connector that matched besides the 2 fan plugs? Driver side u talking about
Passenger side.
Old 05-22-2014 | 01:15 AM
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Alrighty ill look in the am. Be sweet if that's all it is. Wouldn't make sense if this module randomly went bad. Harness issue sounds more like it




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