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COMMON MOT FAILURES

peterp
Posts: 2
Joined: Thu Aug 09, 2018 7:27 pm

low brake pad

Postby peterp » Thu Aug 16, 2018 9:35 am

Fellow enthusiasts,

I am in need of advice regarding low brake pad warning on my 89 Daimler 3.6. Have done the following:

1. Replaced all brake pads with sensors - result - no change.
2. Tested, with a multimeter, the pads at the plugs under the bonnet (hood) and in the boot (trunk. Result - closed circuit - correct.
3. " " " for short to earth. Result - no short to earth - correct.
4." " the plugs which lead to the management system of the car, for short to earth. Result - short to earth one - the RH rear wheel plug.

The plug concerned connects to the right hand rear wheel, and is a multi plug which once served the self leveling system. That system is removed. The two wires concerned with the low pad warning, which travel to the front of the car are brown and black. It is the black wire which shorts to earth.
My problem is that I do not have a circuit diagram (schematic) to find the wires where they presumably exit under the dash.
Has anyone had this experience, or does anyone know where and how the wires from the back exit at the front?

Regards,
Peter parsons, Cornwall UK Daimler 1989 3.6

peterp
Posts: 2
Joined: Thu Aug 09, 2018 7:27 pm

low brake pad

Postby peterp » Thu Aug 16, 2018 9:36 am

Fellow enthusiasts,

I am in need of advice regarding low brake pad warning on my 89 Daimler 3.6. Have done the following:

1. Replaced all brake pads with sensors - result - no change.
2. Tested, with a multimeter, the pads at the plugs under the bonnet (hood) and in the boot (trunk. Result - closed circuit - correct.
3. " " " for short to earth. Result - no short to earth - correct.
4." " the plugs which lead to the management system of the car, for short to earth. Result - short to earth one - the RH rear wheel plug.

The plug concerned connects to the right hand rear wheel, and is a multi plug which once served the self leveling system. That system is removed. The two wires concerned with the low pad warning, which travel to the front of the car are brown and black. It is the black wire which shorts to earth.
My problem is that I do not have a circuit diagram (schematic) to find the wires where they presumably exit under the dash.
Has anyone had this experience, or does anyone know where and how the wires from the back exit at the front?

Regards,
Peter parsons, Cornwall UK Daimler 1989 3.6

naki_k
Super Moderator
Posts: 28516
Joined: Sun Feb 21, 2010 9:25 pm
Location: Kirton, nr Boston, Lincolnshire

Re: COMMON MOT FAILURES

Postby naki_k » Tue Aug 28, 2018 10:58 am

Peter, there should be a wiring diagram in the Haynes manual. A basic one.
The JDHT discs should also have one?

Is this definitely low Brake pad, not “low brake pressure” warning?
88 3.6 XJ6 PDH/CEM
90 Range Rover Vogue SE 3.9 V8 LPG
91 4.0 XJ6 Manual
92 4.0 XJR Manual
92 4.0 XJR
93 3.2s - 4.0 Manual conv
93 4.0 Sovereign
93 6.0 XJ81 DD6 x2
93 6.0 XJ81 XJ12
94 4.0 XJR
94 4.0 Daimler
96 4.0 X306 XJR
96 4.0 X300 D6
97 4.0 X300 Sport Manual
2000 LR Discovery ES TD5 A
Breaking 40/ 300

stevemc
Web Master
Posts: 734
Joined: Thu Jul 24, 2014 8:13 pm
Location: north wales
Contact:

Re: low brake pad

Postby stevemc » Tue Aug 28, 2018 2:41 pm

peterp wrote:Fellow enthusiasts,

I am in need of advice regarding low brake pad warning on my 89 Daimler 3.6. Have done the following:

1. Replaced all brake pads with sensors - result - no change.
2. Tested, with a multimeter, the pads at the plugs under the bonnet (hood) and in the boot (trunk. Result - closed circuit - correct.
3. " " " for short to earth. Result - no short to earth - correct.
4." " the plugs which lead to the management system of the car, for short to earth. Result - short to earth one - the RH rear wheel plug.

The plug concerned connects to the right hand rear wheel, and is a multi plug which once served the self leveling system. That system is removed. The two wires concerned with the low pad warning, which travel to the front of the car are brown and black. It is the black wire which shorts to earth.
My problem is that I do not have a circuit diagram (schematic) to find the wires where they presumably exit under the dash.
Has anyone had this experience, or does anyone know where and how the wires from the back exit at the front?

Regards,
Peter parsons, Cornwall UK Daimler 1989 3.6


may help a little can disable it or may help you fault find

https://www.youtube.com/watch?v=DMwbSVojqEA
Jaguar xj40 1986 build D513 NBU vin number ends 504501
Audi A4 Sline 2016
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