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low brake pad

Posted: Thu Aug 16, 2018 9:35 am
by peterp
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

low brake pad

Posted: Thu Aug 16, 2018 9:36 am
by peterp
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

Re: COMMON MOT FAILURES

Posted: Tue Aug 28, 2018 10:58 am
by naki_k
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?

Re: low brake pad

Posted: Tue Aug 28, 2018 2:41 pm
by stevemc
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