I’ve been helping a friend out with his TDV8 L322 recently. After a load of work it passed its MOT 3 weeks ago.

After just shy of 400 miles on the road it’s started to illuminate most of the dashboard like a Christmas Tree!

Scanning it with my IID tool it reveals a whole host of fault codes.

Quote:


L322 - Range Rover 2007
Vehicle scanned on 26-05-2023 17:37
Using IIDTool BT V3.0 B2803

AAM-Audio Amplifier
* B1A02-13 (2F) Speaker 2 circuit - General electrical failure - circuit open
( on 26-05-2023 16:16:40 at 170452 km )
* B1A01-13 (2F) Speaker 1 circuit - General electrical failure - circuit open
( on 26-05-2023 16:16:39 at 170452 km )
ATCM-Terrain Response
* U0401-94 (2E) Invalid data received from engine control module/powertrain control module - Component failure - unexpected operation
( on 26-05-2023 17:36:21 at 170461 km )
* U0402-94 (2E) Invalid data received from transmission control module - Component failure - unexpected operation
( on 26-05-2023 17:36:21 at 170461 km )
* U0416-94 (2F) Invalid data received from vehicle dynamics control module - Component failure - unexpected operation
( on 26-05-2023 17:36:21 at 170461 km )
* U0403-94 (2E) Invalid data received from transfer case control module - Component failure - unexpected operation
( on 26-05-2023 17:36:21 at 170461 km )
* U0421-94 (2F) Invalid data received from ride level control module - Component failure - unexpected operation
( on 26-05-2023 17:36:23 at 170461 km )
BPM-Body Processor
* 0x7E Sunroof switch or connections defective
HVAC-Heat / Cool
* 0x2F Aspirator motor fault
* 0x30 Air quality sensor line fault
LCM-Light Control
* 0x5B Washer fluid level fault
PAM-Parking Aid
* 0x4 Rear centre right ultrasonic sensor
PBM-Parking Brake
* U0416-00 (2B) Invalid data received from vehicle dynamics control module
( on 26-05-2023 17:02:46 at 170452 km )
TCCM-Transfer Case
* U0122-87 (2F) Lost communication with vehicle dynamics control module - Bus signal/message failure - missing a message
( on 26-05-2023 17:02:46 at 170452 km )
TCM-Transmission
* P0500-00 (2F) Vehicle speed sensor A
( on 26-05-2023 17:02:48 at 170452 km )
TMC-Traffic Message
* B1A56-18 (2B) Antenna circuit - General electrical failure - circuit current below threshold
TVM-Television
* B1D57-13 (2F) Antenna 4 circuit - General electrical failure - circuit open
VIM-Immobilizer
* B1B01-87 (2C) Key transponder - Bus signal/message failure - missing a message
( on 26-05-2023 16:19:11 at 170452 km )

I take it the battery and alternator are fine and working well...?? Pete

__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Battery seems to be holding a charge well without the voltage dropping. Alternator seems to be charging properly as well from what I can test with a multimeter.

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2007 Range Rover Supercharged in Java Black with Ivory Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior

Oh well, would have been an easy fix...!!

Speed sensor does seem like the item that could cause most of those faults... Pete

__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Abs sensor gone bad just need to find which wheel is the A sensor, at a best guess.

P0500-00 gets logged with a faulty ABS sensor/ABS ring as above

Look at the live data to determine which one

Thanks guys,

I'll try and get my hands on the car again and do some digging to find out which sensor it is.

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2007 Range Rover Supercharged in Java Black with Ivory Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior

Finally got a chance to have a look at my friends car today.

When I looked for the ABS ECU on the IID tool I didn’t see it. My IID tool isn’t registered to the car though so that could have something to do with it.

Going via the transmission ECU, I managed to find the live data for the 4 ABS sensors.

Initially all 4 showed as faulty. I managed to get the codes to clear and when looking, all 4 showed as OK. I took it for a drive and all was OK for approximately 200yds, then at exactly the same time, all 4 sensors instantly jumped to “FAULTY” on the IID tool and the dashboard lit up like a Christmas tree.

I’m still non the wiser to which Sensor A is though!

Would you see all of the other codes being created through a faulty ABS sensor?

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2007 Range Rover Supercharged in Java Black with Ivory Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior

Finally managed to replace this ABS sensor last night.

Old one wouldn't budge so instead of messing around I sent a 13mm drill bit down the middle of the sensor without going right through and then pulled it with a pair of long nose pliers. Sensor out in under 15 minutes

Cleaned the hub up with a wire brush and fitted the new sensor.

Test drove the car and it exhibited the exact same symptoms.

I'm convinced I'm on the right track though. Last time I was looking at the codes my friend was driving. Last night when I was driving I felt the ABS tickling the brake pedal at low speeds. Back to the drawing board for trying to work out which corner is doing it though!

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2007 Range Rover Supercharged in Java Black with Ivory Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior

I know you probably have done this, but make sure the sensor you replaced is the proper part, they change from front to back and diesel to petrol, a resistance check should tell you which sensor it is...

This is the sensor that was fitted to the car:

https://www.island-4x4.co.uk/sensor-rear-d...42276.html

I'll need to start doing some digging to see what I can find. Just not enough hours in the day to deal with my own cars let alone help a friend out.

Does anybody know what the resistance reading of a good ABS sensor should be?

I know you could measure the resistance of sensors in old cars but I wasn't sure if you could it with the newer sensors in modern cars.

What's really strange is that monitoring the ABS sensors in the IID Tool Live Values, they all show "OK" but as soon as the fault occurs they all instantly change to "Faulty".

Does anybody have a wiring diagram for the ABS on a 2007 car?

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2007 Range Rover Supercharged in Java Black with Ivory Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior

Wiring diagram found for the ABS  2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2007 Range Rover Supercharged in Java Black with Ivory Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior

I've just checked the resistance of all the ABS sensors at the plug for the ECU.

The front left sensor appears to be open circuit so I've ordered one from Euro Car Parts for collection tomorrow.

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2007 Range Rover Supercharged in Java Black with Ivory Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior

Did the Eurocarparts sensor cure the faults?

Sorry, I didn’t get a notification that you’d replied.

No, the sensor didn’t cure the fault. It did however cure the resistance issue at the ECU.

There was a 2nd fault on this car… The reluctor ring on the OSR driveshaft had come loose and it wasn’t rotating with the shaft.

David. 2002 4.6 Vogue SE - Alveston Red with Lightstone Leather
2007 Range Rover Supercharged in Java Black with Ivory Leather
2012 Range Rover 5.0 SC Autobiography in Indus Silver with Jet/Ivory Interior
2012 Range Rover 4.4 TDV8 Autobiography in Baltic Blue with Sand Interior