ISO: EBCM Wiring Schematic
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Racer
Joined: Feb 2007
Posts: 284
Likes: 30
From: Gordon Nebraska
ISO: EBCM Wiring Schematic
I searched first so I apologize if this is already somewhere else. I need a diagram for the EBCM connector that plugs into the module. I’m repairing a front end hit and this was damaged. I thought I had it good to go but have a RF wheel speed fault and I am unable to program in techline. Thanks in advance for any help.
Tech Contributor
Joined: Oct 1999
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From: Charlotte, NC (formerly Endicott, NY)
Thread Starter
Racer
Joined: Feb 2007
Posts: 284
Likes: 30
From: Gordon Nebraska
Thanks a bunch! I’m trying to figure this out. According to your first three diagrams it shows the wheel speed sensors and the steering wheel angle sensor connecting to the ebcm module but I don’t see on the actual pin out where they connect? Do I just use the wire color shown in that sensor? For example the front right wheel speed sensor shows gy/bn and ye for wire but on the connector I don’t see where they come in? I’m probably missing something simple here but I’m trying to learn.
Thread Starter
Racer
Joined: Feb 2007
Posts: 284
Likes: 30
From: Gordon Nebraska
Alright so I think the end of the existing harness is too far damaged. I’m gonna roll the dice and splice in new steering and brake control module connectors from a harness i sourced used. If that doesn’t do the trick I will bite the bullet and replace entire engine harness which looks less than fun. Wish me luck.
Thread Starter
Racer
Joined: Feb 2007
Posts: 284
Likes: 30
From: Gordon Nebraska
Well replacing the wiring didn’t resolve the issue. I am able to communicate with the ebcm and the chassis modules via gds2 however they both state they are not communicating with each other when you go into the modules.
Additionally steering angle sensor is not talking to ebcm and one wheel speed sensor is still offline but I feel the speed sensor issue is unrelated. I’m pretty confident the engine harness which the ebcm plugs into is good to go now but the harness which runs across the front crash bar may still be the culprit.
I was able to program my used steering module just fine however when attempting to do a replace/reprogram on the ebcm it fails. Reprogram actually finished but didn’t change anything.
ebcm still has the immobilizer fault since programming is unable to complete.
Leaves me with the following possibilities.
- Both used ebcm are bad “yes I have 2”
- chassis module is bad
- Some type of wiring gremlin still messing with me.
Anyone else have any ideas?
Additionally steering angle sensor is not talking to ebcm and one wheel speed sensor is still offline but I feel the speed sensor issue is unrelated. I’m pretty confident the engine harness which the ebcm plugs into is good to go now but the harness which runs across the front crash bar may still be the culprit.
I was able to program my used steering module just fine however when attempting to do a replace/reprogram on the ebcm it fails. Reprogram actually finished but didn’t change anything.
ebcm still has the immobilizer fault since programming is unable to complete.
Leaves me with the following possibilities.
- Both used ebcm are bad “yes I have 2”
- chassis module is bad
- Some type of wiring gremlin still messing with me.
Anyone else have any ideas?
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Burning Brakes
Joined: Nov 2016
Posts: 1,189
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From: San Dimas CA
Well replacing the wiring didn’t resolve the issue. I am able to communicate with the ebcm and the chassis modules via gds2 however they both state they are not communicating with each other when you go into the modules.
Additionally steering angle sensor is not talking to ebcm and one wheel speed sensor is still offline but I feel the speed sensor issue is unrelated.
Additionally steering angle sensor is not talking to ebcm and one wheel speed sensor is still offline but I feel the speed sensor issue is unrelated.
Thread Starter
Racer
Joined: Feb 2007
Posts: 284
Likes: 30
From: Gordon Nebraska
Sorry didn’t mean to be vague at all. What happens is if I do a “Replace and Reprogram” on the EBCM it fails to complete after several attempts. I instead went with just the “reprogram” option and it actually completed but did not remedy any of the problems. I will snap a picture of the display next time I’m working on it.
Additionally I checked resistance between pins 12-13 On the dlc and got 120ohms instead of 60ohms so obviously I either have a wiring issue or a bad module somewhere. Main things that pop up on EBCM that I remember are lost coms with chassis module, steering angle module, multi axis acceleration module, and restraint module.
Additionally I checked resistance between pins 12-13 On the dlc and got 120ohms instead of 60ohms so obviously I either have a wiring issue or a bad module somewhere. Main things that pop up on EBCM that I remember are lost coms with chassis module, steering angle module, multi axis acceleration module, and restraint module.
Burning Brakes
Joined: Nov 2016
Posts: 1,189
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From: San Dimas CA
Thread Starter
Racer
Joined: Feb 2007
Posts: 284
Likes: 30
From: Gordon Nebraska
Thread Starter
Racer
Joined: Feb 2007
Posts: 284
Likes: 30
From: Gordon Nebraska
Pretty successful day, after replacing the entire harness that runs across from crash bar the vast majority of codes related to the ebcm cleared. I am still unable to complete a replace/reprogram sequence but I am leaning more towards my pass through device being the culprit. I’ve read some guys run into issues trying to get by cheap with the vx-nano such as myself. Either gonna fork out the dough for a better tool or bite the bullet and drag her to a dealer and see if they can get it done. Thanks for all of the help so far!