2000 v6 ABS problem, have codes but need help

[airhack20]

I'll start by saying I don't really know my way around a car but I understand how everything works and have the Haynes manual. My uncles is coming over to help work on it so I figured I would try to figure a little bit out so we're not poking and hoping. I checked the codes the other day with my uncles code scanner and this is what I got. (I should note that my main goal is to get through Delaware Inspection as my inspection just passed)

From what I have read I think the EBCM may be bad but has anyone had experience with this? One thing that was going on was, when driving, often after driving maybe less than a mile or during a turn, the ABS, check engine, and low trac would come on at the same time. Also no cruise control.

Possible Scenarios that I've read on the forums:
1. Bad EBCM
2. Faulty wire/connection(we'll check the connections first obviously)
3. Bad Left Front Wheel Sensor causing the cascade of codes

Are there any recommendations of where to start, ex. Relays, Voltage, etc.?



C1214
ABS Enable Relay Contact Circuit Open
– The EBCM commanded the relay on but no voltage is detected at the motor
- or solenoids
C1225
Left Front Excessive Wheel Speed Variation
C1257
Left Front ABS Motor Circuit Shorted To Ground
C1265
Rear ABS Motor Circuit Shorted To Ground
C1262
Right Front ABS Motor Circuit Shorted To Ground
C1278
Right Front Solenoid Circuit Open or Shorted To Ground
C1276
Left Front Solenoid Circuit Open or Shorted To Ground
C1273
Magnasteer (VES) Actuator Circuit Open or Shorted To Ground
– The EBCM has detected that the Magnasteer actuator control circuit is
- at ground
C1286
Brake Warning Lamp Activated By The EBCM

Note: C1214 and C1273 may be crucial to a diagnosis




This is unrelated but maybe you could explain this to me

P0741
TCC Stuck Off
– TCC commanded on and the ECM detected the TCC slip speed higher
- than limits
Probable Cause
1. TCC solenoid failure
2. Open or short circuit condition
3. Blocked passage in transmission
4. Check Transmission Range Switch for proper operation

 

[802]

I think you may be correct, but i would deffenetly check everything else out before changing out the ebcm. I'd start with the Left front speed sensor, and work my way twards the ebcm checking all the connection points for the valid voltages. I wish i could provide you with them, but they shouldn't be too difficult to find.

 

[airhack20]

Thanks 802, that's kind of what I wanted to hear. I saw you are having a similar problem in another post. Let us know what it ends up happening. I will do the same here.

 

[802]

Will do, i'm praying a new harness solves the problem, i feel like a new ebcm would be costly. Did you attempt to reset the codes while viewing them? and if so, did they all pop back up afterwards?

______________________________

 

[802]

I'm not 100% sure how accurate this information is, but you may find it useful.

" Every time you start your car the EBCM/EBTCM does a selftest. If it detects a problem the light comes on and will stay on untill the problem is no longer detected.
The EBCM does a solenoid test once you start moving. exceeding 10 mph for more than 3 seconds starts the test every ignition cycle.(every time you start the car)

If you start your car and the ABS light comes on you can rule out Wheel speed sensors(HUB assembly)and Jumper harness to the wheel speed sensors. EBCM/EBTCM can only detect a fault with those while moving.Wheel speed sensors are AC voltage generators.They generate a small AC voltage as they rotate (like your altenator generates voltage while turning).Voltage is what the EBCM/EBTCM is looking for."

With that being said, ~ "One thing that was going on was, when driving, often after driving maybe less than a mile or during a turn, the ABS, check engine, and low trac would come on at the same time."

In my opinion, the lights would allready be present if the problem existed in the ebcm, the fact that they
come on during travel suggests a worn bearing. Im not fimilliar with half the codes presented, so i can't speak for them all but it is possible that were dealing with scenario 3.

Looking foward to seeing how this turns out for you - 802