Originally Posted by
Space coupe
Recently like as in a couple days recent, upon cold starts and even sometimes when I'm driving the speedometer and odometer stops working the spoiler deploys (regardless of speed and won't let me lower it back down) and the bas esp , abs , brake wear indicator & brake light all turn on. Not too sure why but so far the only correlation I've found is that like I said upon cold starts it happens.
went out and bought a voltage meter to test the battery.
My first test was after I had already warmed the car up (I had to drive to the store to get the multimeter) and of course before I left out to go get it all the lights were came on during the initial cold start.
results:
Engine not running ~ 12.90 volts
Engine not running w/ lights on ~ 12.4 volts
Engine running ~ 14.02 volts
engine running with lights on 13.9 volts
P.s. I'll also make note that my car doesn't drive any differently because of any of this (besides not having abs and traction control) it drives literally no different.
ANSWER: ABS MODULE NEEDED TO BE SWAPPED pn 1935450132
Scanner used: iCarsoft i980
To finally end of the crazy rabbit hole chase this was of a fix, She finally works. The problem was because of dirty grounds, loose wires & ABS module. If anyone encounters this same issue I would suggest diagnosing in the order of (1) Dianostics Test (P0600, P0500, B/P1040, C/P1141 (2) Checking the RCM [traction control module ***D.j. Tighe knows all***] (3) Check wheel speed sensors (4) Perform a pin-out test on the CAN C BUS (5) replace ABS module (Could also be the, SLA (shift Lever assembly), SKREEM (Sentry Key Remote Entry Module), TCM (Transmission Control Module), ICM (Instrument Cluster Module), ECU/PCM (Power Train Control Module).
Changing the RCM/K40 typically fixes this issue for most people, but in my case my car consistently kept setting the P0600 code only and that's a general DTC for a CAN C BUS communication error. I Took it a step further and rewired the CAN C Bus which may or may not have been necessary but the test results were showing that i had faulty wiring going to the ABS module so I re wired the entire CAN C BUS System.
After you Install any used parts be sure to clear the codes, otherwise the ecu won't take the any of the freshly installed modules. Even if it doesn't have stored codes STILL CLEAR THEM.
I have pictures and videos of everything and shop manual section references if anyone needs them, just pm me.