Did a little more today.

Reset all Codes. Disconnected Battery for an hour. Connected batt and put 40amp charge.

Reran all scans. The following modules have "cant comm with EPBM " Dtics

Adaptive Damping Module, ABS Module, Transmission Control Module, Engine Control Module and Naturally the EPBM itself wont comm at all. No DTIC.

Reviewing the Ground Points diagram and assignment, there dosent seem to be a commonality, unless yall tell me that a single bad ground can set off a chain
failure.

If there is a ground possibility, is there a prime, or 2 or 3 to first look at rather than the shot gun approach ?

 

I agree with you comment about SDD being useful, particularly in engineering mode -- my concern is that SDD takes weeks to locate, install and figure out, whereas a good reader with JLR tools might help get him on his way sooner.

 

Mjuddog, Can you put the codes in a pdf and upload them? Might help guide us.

 

Can you list the actual codes you're seeing? This might help us steer you. IIRC SDD lists DTC's in order of frequency and/or importance. Since you don't have SDD, you'll only get the first 5 digits of the 7 digit code but it would help to list them here I think. FWIW, there's no TSB for EPB communication failure.

 

Ah! As I was typing my reply and hit send I saw yours.

 

Doubt this will work since the car can't communicate with the module but it's an easy enough procedure to try:

https://testing-public.carmd.com/Tsb...0/JTB00208NAS1

 

I will work on that

 

"Confirm that the message 'NOT CALIBRATED' or 'APPLY FOOT AND PARK BRAKE' is displayed on the instrument cluster message center, indicating that the parking brake is in calibration mode."

It didnt , it dont ,

 

Have you confirmed all fuses to be in good order? Was anything disturbed in the engine compartment or junction box behind the centre rear seat panel?

 

Sorry, your car is no good. Time to give it to me.

 

I mean no disrespect.
But a 12v battery, sitting at 13v makes no sense to me. I would like to hear that the battery at rest and without a charger attached is registering 12.6 v, or marginally higher.
“the shop says the battery is fine”, means nothing to me.
Without ample voltage and current, many systems do not activate. And without proper codes, we need to rule out the obvious.
The workshop manual and the technical training manual emphasize that if there are too many, unrelated codes, start with the proper power source. And a reset.

Then, go to ensuring all modules and fuses are set.
Then start the pinpoint tests.

Now that we’ve learned it is a repossession, this widens as opposed to narrows the gap. Thus the importance of following the textbook procedure.

 

I watched the battery shop do the load test. CCA on the battery , they applied a 1000 amp load and I verified it. Battery tested Fine.

 

Today, I returned to the junk yard as they have a 07 XK Coup. Verified that the EPBM was still in the car and for $50 I can borrow it, money back if it dont work LOL

Installed this used EBPM , reconnected battery, connected .charger at 40amp setting and redid scan.

ABS immediately came back with same , cant comm with EPBM, and Im gasping, but let the scan run.

It gets to the EPBM and shows 1 fault. Hmmm,

C1785-00

Maybe we getting somewhere now. The borrowed EPBM is identical to mine. DTIC code verified U3002-81 wrong car LOL

 

2. On the EPB actuator side of connector CV7, check resistance between the following points: Pin CV7-1 and pin CV7-6 (pass value 0.1 ohms to 0.2 ohms). The EPB actuator should be replaced if any of the above tests fail. When replacing the EPB actuator, do NOT replace the secondary parking brake cables unless they are worn or damaged. The EPB actuator primary cable should be uncoupled at the compensator. There is no need to uncouple the secondary cables. Unnecessary uncoupling can damage the cable retaining lugs. 3. With connector CV7 disconnected, also disconnect EPB module connector CR50 (4- way connector). 4. Check resistance between the following points: • Pin CR50-3 and pin CV7-1 (pass value: less than 5 ohms). • Pin CR50-2 and pin CV7-6 (pass value: less than 5 ohms).


What I need is PIINOUT diagram for these connectors. Otherwise its an easter egg hunt

 

Some modules require SDD when replacing to mate with the system.

 

 

First pic is what I believe is the C7 connector , its a 6 cavity and is located drivers side over the rear end.

2nd pic is a rear view of that connector showing the RW wires and GW wires

Measuring the male pins the resistance i get 12 ohms not the 0.1 ohm required,

 

Yes, and the versions on all modules need to be SW compatible versions. Given the car's history, if someone randomly replaced a module it can muck up the works. A recent version (or a subscription to) SDD with module SW update capability may be the only way to get this working.

 

And that my friend is the manufacturers way of choking the repair industry down. Recently been advocated as Right to Repair and Harley Davidson just got sued over it.

Its a crock.

 

Sorry , missed this question. All fuses have not been verified. Just the ones on powertrain and EPBM circuits. Rear JB , i could tell its not been abused. When I pulled it out to get the EPBM out I was able to do a real good visual.. Seems OK. Engine Fuse box cover was missing when I got it. Visual looked clean and pulled a few fuses to check. Engine bay appears undisturbed.