Hi,

My Range Rover TDV8 L322 has some HDC issues. Diagnostics points to broken wire under right hand side front seat (LHD car).

Has anybody and guides etc for opening up and looking for wire problems between the Terrain response module and det right foot well?

VIN: SALLMAM247A249364
L322 - Range Rover 2007
Vehicle scanned on 21-05-2019 12:05
Using IIDTool BT V3.0 B2643

ATCM-Terrain Response

U0401-94 (2E) Invalid data received from engine control module/powertrain control module - Component failure - unexpected operation
( on 21-05-2019 12:04:35 at km )
U0402-94 (2E) Invalid data received from transmission control module - Component failure - unexpected operation
( on 21-05-2019 12:04:35 at km )
U0416-94 (2F) Invalid data received from vehicle dynamics control module - Component failure - unexpected operation
( on 21-05-2019 12:04:34 at km )
U0403-94 (2E) Invalid data received from transfer case control module - Component failure - unexpected operation
( on 21-05-2019 12:04:35 at km )
U0421-94 (2F) Invalid data received from ride level control module - Component failure - unexpected operation
( on 21-05-2019 12:04:34 at km )
HVAC-Heat / Cool

0x30 Air quality sensor line fault
TCCM-Transfer Case

U0122-87 (2F) Lost communication with vehicle dynamics control module - Bus signal/message failure - missing a message
( on 21-05-2019 12:04:46 at 227619 km )
TMC-Traffic Message

B1A56-18 (2F) Antenna circuit - General electrical failure - circuit current below threshold

Hmmm....looks more like a battery / low voltage issue.

How is your battery and charging system ? (before you start dismantling and do any damage...) .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Would normally agree, but the battery was new in february. I charged last night, still HDC not working, and DSC and yellow brake light lit. Not ABS. Also says Suspension lowering everytime I Start it ut.

Did this issue arise in February , i.e. why you changed the battery ?
Have you cleared codes since then ? .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

These codes are aftter I cleared the codes.

Havent had any issues with the car until saturday, when I was driving in heavy rain. Been amber lighting ever since.

Hi MariusRR,
did you find your fault?

I have a similar problem ....

L322 - Range Rover 2008
Vehicle scanned on 09-05-2021 19:48
Using IIDTool BT V3.0 B2742

ATCM-Terrain Response

U0401-94 (2E) Invalid data received from engine control module/powertrain control module - Component failure - unexpected operation
( on 09-05-2021 19:44:58 at 144458 km )
U0402-94 (2E) Invalid data received from transmission control module - Component failure - unexpected operation
( on 09-05-2021 19:45:00 at 144458 km )
U0416-94 (2E) Invalid data received from vehicle dynamics control module - Component failure - unexpected operation
( on 09-05-2021 19:45:00 at 144458 km )
U0403-94 (2E) Invalid data received from transfer case control module - Component failure - unexpected operation
( on 09-05-2021 19:45:00 at 144458 km )
FBH-Fuel Burn.Heater

0x0304 Circulation pump - Open circuit or short circuit to battery
HVAC-Heat / Cool

0x30 Air quality sensor line fault
0x41 Park heater message disturbance fault
IPC-Instrument Pack

U2016-41 (2 Control module main software - System internal failure - general checksum failure
( on 08-05-2021 11:02:58 at 144399 km )
U0248-87 (2F) Lost communication with remote driver utility module - Bus signal/message failure - missing a message
TMC-Traffic Message

Battery is new and full....

thx sebastian

Yes. Wire breakage to the yaw rate sensor.

Tried a lot of stuff first, like changing the yaw rate sensor, hdc ECU etc.

But it was a breakage.

yaw rate sensor?? Where can I find that?

many thx

I think it is buried somewhere in the mid console.

I am not that competent on fail searching electrics. But took my mechanic 1 hour to find the wire breakage. Suggest you do the same?