Oh wisdoms and wise beholders! Can some one please share there vast knowledge on the following Wizardry/sorcery!
My vehicle has broken down with ABS warning light issues. Garage have reported ABS pump module failure. As advised they carried out inspection of the above vehicle, starting the engine from cold with no issues. However, the ABS and engine management lights remained illuminated.
They then undertook diagnostic testing and obtained the following results:
U0121 – Lost communication with ABS control module
C0031 – Left front wheel speed sensor
C0037 – Left rear wheel speed sensor
C003A – Right rear wheel speed sensor
C1109 – Vehicle dynamics control switch
U0100 – Lost communication with engine control module
U0125 – Lost communication with multi access acceleration sensor module
U0155 – Lost communication with instrument panel cluster
U0401 – Invalid data received from electronic control module.
and so the fun begins... The garage had removed the ABS module to be reconditioned by ECU testing (It's since come to light it's already been there before due to the void stickers). So I contacted ECU testing who bench tested the ABS module with no faults however due to it being refurbished prevoiusly by the previous via ECU testing owner they reconditioned it anyways.
The garage re-installed the ABS module and yet "0121 – Lost communication with ABS control module". So I purchased a 2nd hand ~ABS module from the same make/model which was in working condition. The garage installed the ABS module and yet "0121 – Lost communication with ABS control module".
The dash lights up like a Christmas tree although everything works i.e. temp/fuel gauge/rev counter but the speedo doesn't?. (I did do the hard factory test to the cluster and all dials move left to right and all lights flash). However the ESP assist show failure and Hill start assist not available. The mileage (144,180) is stuck despite me driving 35 miles since.
The garage has now advised that it could be a electrical issues in the wiring harness. They don't specialise in this and now am left in the dark. (they said all fuses seem fine ) Any help would be much appreciated pictures attached.