ABS, traction control, brake and check engine lights are on dash?

ROB3RT3

MEMBER
2007 BUICK LUCERNE
3.8L
V6
2WD
AUTOMATIC
205,000 MILES

ABS, traction control, brake, and check engine lights are on dash. The scanner found no codes for engine, but it is unable to connect to abs system for some reason, fuses seem fine. There is some incomplete monitors from the battery being dead I suppose, but I need to get all the lights off the dash for an inspection. It was parked because of a brake line that broke coming from the master to the ABS, I fixed that and bled the brakes with a hand pump.

Saturday, January 18th, 2025 AT 4:33 AM

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
50,348 POSTS

Hello,

It seems like the data link connector is not working, does the scanner work in other cars? let check for power and the ground for the connector, I have seen the ABS control module cause this issue, but it would be nice to get a code out of it so we don't start throwing parts at it. Here is a video to help and I have marked the wiring to check for power and ground for the connector:

https://www.youtube.com/watch?v=6Tlg3JmgNSQ

Both black wires should be ground, and power should be org/pnk.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please go over these guides and get back to us.

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Saturday, January 18th, 2025 AT 12:36 PM