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Discussion Starter #1
Any assistance would be appreciated...starting to get frustrated.

2005 LR3 217k km’s
Good condition except the following.

-HDC fault System unavailable.
-transmission fault traction reduced.
-system fault special programs unavailable.
-special programs off.
-suspension lowered.
-amber suspension light solid on dash cluster.
-flashing green low range on dash cluster.
-high/low range switch does nothing flashing amber on high and low on the switch.
-dsc switch does nothing.
-hdc switch does nothing.
-suspension switch does nothing except a ding on dash
-cruise is not working but I assume because stuck in low range.
-mode dial only triggers warning on dash
cluster.
-lr3 is stuck in low range
-code P0902 clutch actuator-circuit low.
-code P0915 gearshift position-circuit range/performance.

I have done the following

-battery tests at 12.6v not running.
-changed brake switch.
-changed all 4 brake bulbs.
-pulled up electrical lines on drivers side rail and passenger side rail and cleaned any connections with signs of corrosion.
-checked and cleaned all connections in center console.
-checked all connection behind battery. TCCM had signs of corrosion on a couple pins...cleaned all connections with electrical contact cleaner and used dielectric grease on connections.
-hard reset a couple times.

I have found 1 broken line on the passenger side “A” post that is a brownish green colour that I cannot find a match for. The length indicates it should connect in a crimp that has 2 red coming from rear and attaching to 2 red.
 

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The direct way is to read the stored fault code(s)
 

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Discussion Starter #3
The codes that are returning are P0902 clutch actuator & P0915 gearshift position along with a bunch of communication codes.
 

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Not the generic engine management P codes, a dedicated tester is needed to read the codes from the special function modules, ABS/TRS/RCM or something like that, those codes are usually starting with C or U
 

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Discussion Starter #5
I used s snapon Solus Ultra for reading the codes. Will the dealership be capable of reading and troubleshooting more detail?

Codes Before Clearing...
-B1A93 invalid roof position.
-U0416 invalid data received from vehicle dynamics control module.
-U0403 invalid data received from transfer control module.
-U0421 invalid date received from ride level control module.
-P0902 clutch actuator-circuit low.
-P0915 gearshift position-circuit range/performance.
-B1B69 12 volt supply circuit.
-B1C16 passenger left/right mirror motor feedback circuit.
-B1C45 front windshield wiper park position switch.
-B1C77 rear wiper relay coil circuit.
-U0155 lost communication with instrument cluster control module.
-U0300 internal control module software incompatible.
-B1B48 rear left outer sensor.
-B1B44 rear right outer sensor.
-B1B50 rear left inner sensor.
-B1B46 rear right inner sensor.
-U0140 Lost communication with body control module.
-B1B74 front foot defrost mode stepper actuator.
-B1B75 front foot face mode stepper actuator.
-C1A00 control module.
-U0122 lost communication with vehicle dynamics control module.
-B1B76 front left air blend stepper actuator.
-B1B77 front right air blend stepper actuator.
-B1B78 system pressure.
-B1B16 passengers left/right mirror motor feedback circuit.
-B1C45 front windshield wiper park position switch.
-U0100 lost communication with engine control module/Powertrain control module “A”.

Codes that returned after clear
-P0902 clutch actuator-circuit low.
-P0915 gearshift-circuit range/performance.
-U0403 invalid data received from transfer case control module.
-U0416 invalid data received from vehicle dynamics control module.
-U0421 invalid data received from ride level control module.
-B1A93 invalid roof position

Any of these codes give some insight?
 

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Unfortunately i can't figure out what's that wire but for your symptpms the remained U codes are relevant IMO. It's posible to need a software update or there is a bad contact somewhere and that's a nightmare as the communications are via CAN-BUS ... ugly thing
 

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Discussion Starter #8
I believe I have found my issue...TCCM shorted out.

I had looked at the module and found corrosion on the pins and signs of water...cleaned them and thought that would be good.

Proceeded to driver and passenger side rails to look for corroded/broken wires...found 1 broken gray wire. Still not sure where this connects.

Checked for corrosion and broken errs in the centre console and the driver and passenger wheel wells behind plastic guards. Still nothing appeared wrong.

So I went back to the TCCM, opened the box and ?...the TCCM has shorted out from assuming water. Pic attached.

So order a new TCCM tomorrow. I have read that the TCCM will need programming! Is this correct???

And back to the gray wire (I thought it was brown but I believe it is discoloured)...looks to be wound with a red wire going up “A” post and then across firewall towards drivers side...but I can’t determine where it goes. Any ideas??? I do believe it connects to 2 red wires coming from rear.

Any input is appreciated.
 

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I have exactly the same issue you are having. I have not investigated the TCCM yet, but i have the same wire disconnected as you have. In my case, the wire appears to be olive colored and appears to be in a twisted pair with a red wire. I pulled the wiring diagrams and I can not find a red and green, red and light green, or red and any other color green twisted pair, but it appears to go through the drivers side fire wall, after that i can not see it.

Any luck fixing it?
 

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I’m pretty sure you have the wires connected incorrectly, one red wire goes to the double one and the other wire goes to the yellow one!
 
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