Trifecta lights with no speedo & MPG gauge

[Clavurion]

ACTronics factory refurbished units also available.

https://www.youtube.com/watch?v=NxumtQskqTY&t=11s

[Purplecty]

So it can either be wiring, a bad ABS module or the pick up ring in the wheel bearing. I would start with what doesn't cost you and check the wiring from the harness side. BBA reman does ABS repairs for around $100 using their eBay sales if they still even offer it there...

[andrewwynn]

So this means the sensor is ok and the problem is in the wiring or inside the module. You can find the pin out of the module connector and use ohmmeter to test continuity to ensure no broken wires or you make a cross-car jumper so you can connect the left side wiring to the right side sensor.

You actually can probably skip that step because the error you are getting is not a flaky signal you are getting a no signal error.

Do you start with no lights and they come on after some time ? The internal fault with the module is often affected by heat and vibration and will have the abs work on and off

[Loperamide]

Originally Posted by andrewwynn

So this means the sensor is ok and the problem is in the wiring or inside the module. You can find the pin out of the module connector and use ohmmeter to test continuity to ensure no broken wires or you make a cross-car jumper so you can connect the left side wiring to the right side sensor.

You actually can probably skip that step because the error you are getting is not a flaky signal you are getting a no signal error.

Do you start with no lights and they come on after some time ? The internal fault with the module is often affected by heat and vibration and will have the abs work on and off

YES! first thing in the morning all is ok...and then when car reaches operating temp, and while i'm at a stand still, the lights will come on.

If i turn the car off for 10-20 mins, and turn it back on, the lights disappear, and then come back on after a while.

[Loperamide]

One other thing I wanted to ask was, do these sensors affect when the transmission shifts gears?

I was driving today around 40mph, and the transmission would not shift up and the rev counter was around 4000 rpm, and then suddenly it shifted up 2 gears at once. Did this a couple of times actually. This was AFTER i swapped the sensors around so curious if they control the gear shifting in any way?

[upallnight]

Originally Posted by Loperamide

One other thing I wanted to ask was, do these sensors affect when the transmission shifts gears?

I was driving today around 40mph, and the transmission would not shift up and the rev counter was around 4000 rpm, and then suddenly it shifted up 2 gears at once. Did this a couple of times actually. This was AFTER i swapped the sensors around so curious if they control the gear shifting in any way?

There are speed sensors inside the trans. The wheel sensors are mainly for DSC and ABS along with MPH.

[Clavurion]

DME (engine ECU) gets vehicle speed signal from rear right ABS sensor.

[Loperamide]

Originally Posted by Clavurion

DME (engine ECU) gets vehicle speed signal from rear right ABS sensor.

Vehicle speed is rear left which is why my speedo stops working same time as rear left wheel speed sensor trifecta error.

I believe cruise control is controlled by the rear right sensor?

[Clavurion]

Originally Posted by Loperamide

Vehicle speed is rear left which is why my speedo stops working same time as rear left wheel speed sensor trifecta error.

I believe cruise control is controlled by the rear right sensor?

OK, I should have not confused you with that previous post. Yes, cruise is controlled by DME and affected by rear right sensor.