Does the ABS Module do a Cold Check
 

Trifecta
Swapped Offending Sensor per Autologic
No change in Trifecta

ABS sent for rebuild
Rebuild Installed
Cold Start - No trifecta. 3 minute drive for test.
Grab Coffee. Warm Start. No trifecta. 3 minute drive home.

Today right off a cold start. Trifecta.
3 Minute Drive. Idle. Ignition Off.

Ignition On - Trifecta.
Idle
Ignition Off

Ignition On - No Trifecta.
Drive off, ignition off/on no more Trifecta.

I guess I'm going to observer more and take it from there.
Don't have diag tools so I if the tri-fecta persist, going to need to have the indy run a scan for me

Does the ABS Module do a Cold Check
 

When I've had intermittent trifecta (orange brake not red), it's ended up being a loose abs sensor or voltage fluctuations.


Use the hidden menu to verify voltage never drops below 13v

check your battery voltage at the under hood points, and at the battery.
Tests
COLD - engine off after overnight
Engine at idle
Engine at 1500 RPMs
Engine at 2500 RPMs

Report back

ahh..the good 'ole fashioned gremlins.

4'ish years ago , the dang thing shut down on me while driving due to bad alt/charging - and there was nary of a alt. error on the cluster.

Need some brain consensus.
Voltage looks fine.

As coincidental as this may sound, the trifecta came up a day right after replacing the front BJ. Not that I can see how that would correlate to the trifecta, just short of the sensor, in which that was changed per the readings given by the Autologic.

I presume if it was the SAS, it would show up in the logs.
Under test plan diags, the auto eng. should be able to isolate it if it sees issues with data on the yaw sensor ?

Me thinks I might have to drop this off to the Indy to have him diag it out

Or you could spend the $30 and get your own chinese cable from ebay that usually comes with the software as well.

Best case scenario this is a failed or dirty wheel speed sensor sending implausible data. Worst case its a bad ecu. No way to tell without a proper diagnostic cable.