Member Since: 24 Feb 2023
Location: Dorset
Posts: 15
Everything else checks out fine to the ABS ECU.
The Yaw Sensor is wired direct to the ABS Module and communicates on its own, dedicated pair of twisted wires - so there is nothing else in the way so to speak.
The Brakelight switch, all speed sensors etc - everything - reports perfectly. It is just the Yaw Sensor that is fecked up!
3rd May 2023 3:17 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13657
Many thks as wondered about that wire where it goes via the connectors C0583R and C2243R, bet it was great fun trying to get them apart when u checked them,
Imagine that was great fun checking that connector behind the glove box
Also assume it doesn’t make any difference if the yaw sensor and ABS module is second hand or new ??
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3rd May 2023 3:50 pm
Saint.V8
Member Since: 24 Feb 2023
Location: Dorset
Posts: 15
As mentioned previously - I have bypassed all the connections in the car by running new wires from Sensor up to the ABS Module as I couldn't fully qualify the wiring in the car beyond a continuity check.....so even though they showed continuity they could be breaking down under load so Iran all new wiring as a test...and still the same.
3rd May 2023 9:51 pm
Saint.V8
Member Since: 24 Feb 2023
Location: Dorset
Posts: 15
Further to:
EDIT: DISREGARD THE BELOW - I HAD THE TCCM MODULE DISCONNECTED HENCE THE NO CONNECTION AS THE CAN LOOPS IN AND THEN OUT OF THIS>>>>>>doh!!!
Just been out to recheck some readings.....
HSCAN H to HSCAN L resistance reading (battery disconnected obviously) is now reading 122Ohms.....ooooooh!!!!
Disconnected ABS Module - no difference
Disconnected Instrument Cluster - goes open circuit
ooooooooh.!!!!!!
Tried the other ABS module - still reading 122Ohms......oooooooh!!!!!!
Measured continuity on the HSCAN L&H from ABS connector back to the Diagnostic socket - both open circuit.....oooooooooh!!!!!!!
My curious question is - how come I can get the Diagnostics to communicate with the ABS Module and get wheel speed readings, brake pressure readings etc etc if there is no CAN connection??????????????????
4th May 2023 1:33 pm
Saint.V8
Member Since: 24 Feb 2023
Location: Dorset
Posts: 15
Measured the voltages on HSCAN H and HSCAN L again - still reading a 1.34 - 1.37V ......hmmmmmm
So went round unplugging in turn all the ECU's on the HSCAN on my D3
SAS - No Change
EAS - No Change
Terrain - No Change
SRS - No Change
ECM - No Change
TCCM - No Change
EPB - Voltage jumped to 2.02V - ooooooooh!!!!!!!!
I have been having random ABS cutting in on turning right, I have recalibrated the steering sensor and it seemed to go away, but I drove the truck on Friday and it was cutting in when turning say around a roundabout, also noticed a flash of a yellow ! waring light on the dash.
I'll be looking at the yellow ring this weekend and hopefully I can fix it with some epoxy glue.
Thanks all who have contributed to this thread.*D3 V8 SE Blue 2004 on LPG with Rock sliders, roof rack/Ladder, snorkel, 275/65x18 STT Muds, engine/G/box ally protection.
*D2 TD5 Epson Green 2002 Off roader (weekend toy)
*D3 V8 HSE silver 2004 on LPG (Wife's) SOLD
*Maserati Gran Turismo, the Gentlemans cruiser with a V8 soundtrack.
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