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LR3 trans woes..

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10 replies to this topic

#1
psykokid

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Long story short, a friend picked up an LR3 with HD package for chips. The reason it was so cheap was that the trans was on its way out. He pulled the box and had it rebuilt by a shop that the local LR dealership sends all their trans rebuilds to. Ended up replacing the valve body while it was apart. Trans was buttoned up, but wouldn't communicate with the car. So he replaced the valve body for another rebuilt valve body and same thing, car cant communicate with the rebuilt trans. 

 

He's going to go down and talk to the shop doing the rebuild tomorrow as he suspects there is a bit of a miscommunication and is going to try and get it sorted. Any ideas or suggestions of things to check?



#2
ColinB

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Bad T-Case control unit?


 HAM KJ7RRC
95 LWB RRC 3 inch rte lt-230, 35x12.5/15 bfg km2, GBR 4.14 with trutracs front and rear, Rovertracks front Hd axles and cv's, Ashcroft Hd rear axles,
Rte rear trailing arms,Warn 8k, RTE bumpers front and rear with P-Fab Mods, Flowmaster exhaust ,custom sliders GRB F+R driveshaft, RTE steering links. 12 in Bilstien 7100's


#3
Justin

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Did they happen to change out the plug sleeve?

 

Check and see if they happened to get any fluid or residual fluid in the plug



#4
DiscoDavis

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Try Abran on the land rover forums. He has done a few too. Don't you have to swap over the mechatronics from the old trans to the new one since they are paired from factory?


:lr:

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#5
psykokid

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Just circling back around to this one - Yes, he did replace the plug sleeve when the trans was rebuilt. The recommended shop was giving him the go around so he went and had it towed down to Abran at CARRS4x4. He initially couldn't get the trans to communicate  so he swapped the original mechatronics unit from the truck onto the new valve body and all is right with the world now. Abran is flashing the latest software to the TCU while he's got it down there. He should have his truck back next week. My friend is pretty stoked to get the LR3 sorted and ready to tag along on some wheeling trips.


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#6
DiscoDavis

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Abran is the man!

 

Glad it worked out.


:lr:

2006 Discovery 3(Build Thread)

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#7
psykokid

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Well, he had it working right and then all of the sudden last week the car dumped to the bump stops. Started throwing a ton of codes. He finally got his IID tool yesterday and here's a dump of the laundry list of errors he's gotten:

 

VIN: SALAE25426A000000
L319 - LR3 2006
Vehicle scanned on 12-09-2017 01:02
Using IIDTool BT V3.0 B2204
 
Airbag
 
B0052-1D (AF) Passenger's safety belt sensor - General electrical failure - circuit current out of range
( on 11-09-2017 23:58:08 at 158480 mi )
B0072-1B (AF) Passenger's safety belt pretensioner deployment control - General electrical failure - circuit resistance above threshold
( on 11-09-2017 23:58:08 at 158480 mi )
B0028-1B (AF) Right side air bag deployment control - General electrical failure - circuit resistance above threshold
( on 11-09-2017 23:58:07 at 158480 mi )
B00A0-88 (AF) Occupant classification system - Bus signal/message failure - bus is off
( on 11-09-2017 23:58:11 at 158480 mi )
U0122-87 (AF) Lost communication with vehicle dynamics control module - Bus signal/message failure - missing a message
( on 12-09-2017 01:00:06 at 158480 mi )
Body Control
 
B1B02-28 (2F) Low frequency coil - General signal failure - signal bias level is out of range/zero adjustment failure
( on 12-09-2017 00:03:19 at 158480 mi )
B1C57-14 (6C) Passive start ignition relay coil circuit - General electrical failure - circuit short to ground or open
( on 12-09-2017 00:01:14 at 158480 mi )
B1D12-15 (2E) Volumetric alarm power circuit - General electrical failure - circuit short to battery or open
( on 12-09-2017 00:04:35 at 158480 mi )
B1D13-15 (2E) Interior lamps 1 circuit - General electrical failure - circuit short to battery or open
( on 12-09-2017 00:02:56 at 158480 mi )
U0155-87 (2E) Lost communication with instrument cluster control module - Bus signal/message failure - missing a message
( on 12-09-2017 00:31:20 at 158480 mi )
Cell Phone
 
B1A00-47 (AF) Control module - System internal failure - watchdog/safety failure
( on 12-09-2017 00:31:51 at 158480 mi )
Engine Petrol
 
P0500-62 (AA) Vehicle speed sensor A - Algorithm based failure - signal compare failure
P0504-64 (2A) Brake switch A/B correlation - Algorithm based failure - signal plausibility failure
P0504-29 (2A) Brake switch A/B correlation - General signal failure - signal is invalid
C0037-00 (AA) Rear left wheel speed sensor
C003A-00 (AA) Rear right wheel speed sensor
Parking Brake
 
U0122-87 (EB) Lost communication with vehicle dynamics control module - Bus signal/message failure - missing a message
( on 11-09-2017 23:59:01 at 158480 mi )
Rear Diff
 
P0122-87 (2F) Throttle/pedal position sensor A - circuit low input - Bus signal/message failure - missing a message
( on 03-03-2012 21:07:54 at 3049711 mi )
Steering Angle
 
U0122-87 (2F) Lost communication with vehicle dynamics control module - Bus signal/message failure - missing a message
( on 12-09-2017 01:00:07 at 158480 mi )
Suspension
 
C1A68-1C (AF) Front left height sensor supply - General electrical failure - circuit voltage out of range
( on 12-09-2017 00:46:55 at 158480 mi )
C1A31-01 (AF) Front left corner valve - General failure information - general electrical failure
( on 12-09-2017 00:47:00 at 158480 mi )
C1A37-01 (AF) Front cross-link valve - General failure information - general electrical failure
( on 12-09-2017 00:47:10 at 158480 mi )
C1A13-64 (AF) Pressure does not decrease when venting gallery - Algorithm based failure - signal plausibility failure
( on 12-09-2017 01:01:48 at 158480 mi )
U0122-87 (AF) Lost communication with vehicle dynamics control module - Bus signal/message failure - missing a message
( on 12-09-2017 01:00:04 at 158480 mi )
C1A00-54 (AF) Control module - System programming failure - missing calibration
( on 12-09-2017 00:46:53 at 158480 mi )
Terrain Response
 
U0122-87 (2F) Lost communication with vehicle dynamics control module - Bus signal/message failure - missing a message
( on 12-09-2017 01:00:04 at 158480 mi )
Transfer Case
 
U0132-86 (2F) Lost communication with ride level control module - Bus signal/message failure - signal is invalid
( on 11-09-2017 23:58:04 at 158480 mi )
U0136-87 (2F) Lost communication with differential control module - rear - Bus signal/message failure - missing a message
( on 11-09-2017 23:58:04 at 158480 mi )
U0122-87 (2F) Lost communication with vehicle dynamics control module - Bus signal/message failure - missing a message
( on 11-09-2017 23:58:04 at 158480 mi )
Transmission
 
P0500-00 (2F) Vehicle speed sensor A 
( on 11-09-2017 23:58:04 at 158480 mi )
U0416-86 (2F) Invalid data received from vehicle dynamics control module - Bus signal/message failure - signal is invalid
( on 11-09-2017 23:58:30 at 158480 mi )
Ventilation
 
B1B66-15 (2F) Right seat heater temperature sensor - General electrical failure - circuit short to battery or open
( on 11-09-2017 23:58:37 at 158480 mi )
 
Air bag and seat heaters are because the passenger seat is out of the truck, not sure on the rest


#8
psykokid

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Also - shouldnt the ABS module be showing up? It's not coming up on the scan of the ECUs.



#9
DHappel

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Holy crap...that's going to take more than a quick look at lunch to digest.  

 

It looks like the codes have never been pulled since new and I bet many/most of them are no longer valid.  Clear them and see what comes back.  A lot of them will be chain faults; when one item in the buss fails everything below it can't be seen so shows as a fault.

 

So start by clearing the codes then pull them again and report back.  We'll work from there.


Don
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#10
psykokid

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Holy crap...that's going to take more than a quick look at lunch to digest.  

 

It looks like the codes have never been pulled since new and I bet many/most of them are no longer valid.  Clear them and see what comes back.  A lot of them will be chain faults; when one item in the buss fails everything below it can't be seen so shows as a fault.

 

So start by clearing the codes then pull them again and report back.  We'll work from there.

 

Actually, the code dates are day month year format so those are all from yesterday evening. I'll have him clear the codes and see what comes back for giggles..



#11
psykokid

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Alright, figured I'd update this. My friend spend a lot of time checking things out, going to town with a multi meter and tracing wires and checking for continuity. Seems like a lot of the problem systems had a common ground which was located in the front driver side. He pulled the fender liner to check the front body ground and found this: 37496895846_e8b8b9d33d_b.jpg

 

This my friends is a broken off ground stud. So yeah, no wonder everything was going haywire with no ground in the front. He drilled and put a rivnut in, sanded down on the body through the schutz to get good contact then put some dielectric grease on to keep corrosion at bay. 

With the ground restored everything was again kosher. With the Christmas tree gone from his dash he could drive it around and re-set the readiness codes. He went and got it smogged and it passed with flying colors. Now he's getting ready to redo the bushings in the front end and once that's sorted and aligned he's going to mount the set of BFG KO2's in 265/65R16 he picked up for $400 bucks used off a guy on the let go app. Pretty good deal considering they're at 95% tread depth. 


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