rear differential speed sensor

dewo · **Joined:** Mon Mar 16, 2015 11:41 pm **Posts:** 5

Good day people. Hopefully there's someone here that can help me.
6 Months ago my speedometer stopped working, brake light + ABS light came on. (2004 Jeep Liberty KJ 2.8 CRD)
I replaced my rear differential speed sensor (MOPAR 56041393AA) and all was back to normal again.

Same happened to me bout a week ago, changed the sensor, but this time nothing changed. Speedometer not working, brake light & abs light on. So I went and changed the wiring to the sensor incld the plug, but still no change.

I've multi-meter tested the Yellow wire and it receives 11v.
Jacked up the rear, Tested the Yellow/Blue wire while spinning he rear wheel, it jumps to 1.5v (only cause I can't spin the wheel fast enough while holding the multi-meter)

Last resort will be to go see the stealers
Any help or input how to solve this will be much appreciated. Thank you.

flash7210 · **Posted:** Thu Nov 12, 2015 12:35 pm

Check the front wheel speed sensors.

dewo · **Joined:** Mon Mar 16, 2015 11:41 pm **Posts:** 5

Tnx for the reply correct me if I'm wrong. 02 - 04 kj speedometer works from the rear diff sensor?

flash7210 · **Posted:** Thu Nov 12, 2015 3:57 pm

dewo wrote:

Tnx for the reply correct me if I'm wrong. 02 - 04 kj speedometer works from the rear diff sensor?

Dont know for sure.
On my 05 I had a front wheel sensor go bad and my ABS light came on and speedo and odo quit working.

Mike92104 · **Posted:** Thu Nov 12, 2015 7:15 pm

dewo wrote:

Good day people. Hopefully there's someone here that can help me.
6 Months ago my speedometer stopped working, brake light + ABS light came on. (2004 Jeep Liberty KJ 2.8 CRD)
I replaced my rear differential speed sensor (MOPAR 56041393AA) and all was back to normal again.

Same happened to me bout a week ago, changed the sensor, but this time nothing changed. Speedometer not working, brake light & abs light on. So I went and changed the wiring to the sensor incld the plug, but still no change.

I've multi-meter tested the Yellow wire and it receives 11v.
Jacked up the rear, Tested the Yellow/Blue wire while spinning he rear wheel, it jumps to 1.5v (only cause I can't spin the wheel fast enough while holding the multi-meter)

Last resort will be to go see the stealers
Any help or input how to solve this will be much appreciated. Thank you.

There's a known wiring issue that will cause an intermittent issue with the rear sensor. The fox is to replace with larger gauge wire. I'll post a link of what I used when I have more time.

Mike

dewo · **Joined:** Mon Mar 16, 2015 11:41 pm **Posts:** 5

Thank you Mike, the Mopar wiring kit I got has two blue bigger wires.

Mike92104 · **Posted:** Sat Nov 14, 2015 1:04 am

dewo wrote:

Thank you Mike, the Mopar wiring kit I got has two blue bigger wires.

That's what I got. It fixed my issue.

dewo · **Joined:** Mon Mar 16, 2015 11:41 pm **Posts:** 5

Problem fixed. Replaced the sensor again and all is working fine now.

jagster936 · **Joined:** Sun Aug 04, 2019 3:06 pm **Posts:** 210

There is a Mopar wiring kit? Mine is doing similar, no odometer, temp readouts squirrly; ABS/Brake light on. It was intermittent for months now it's stuck. Not sure if it's wiring or the sensor yet.

WWDiesel · **Posted:** Sun Jul 10, 2022 4:46 pm

jagster936 wrote:

There is a Mopar wiring kit? Mine is doing similar, no odometer, temp readouts squirrly; ABS/Brake light on. It was intermittent for months now it's stuck. Not sure if it's wiring or the sensor yet.

Answered your question on your other post. See:> viewtopic.php?p=951022#p951022

rear differential speed sensor

Who is online