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20th June 2020, 17:48 | #1 |
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brake pad warning light wiring diagram
Hi All,
The brake pad warning light has been on for a while. Trikey has fitted a plug shorting the two wires together and put the light out, but I want to trace the broken wire and repair the wiring so I can re-instate the the plug and put the circuit back to 'factory' So, does anyone have a wiring diagram of the two sensors up to the plug in the engine bay? SteveN
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20th June 2020, 18:52 | #2 | |
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Quote:
The adjacent blue plug is for the ABS sensor Brian |
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20th June 2020, 18:55 | #3 |
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Pad Wiring
A senor may have failed but here you go.
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Illegitimi non carborundum |
21st June 2020, 08:48 | #4 |
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Thanks Guys,
Maybe I didn't explain clearly The shorting plug fitted by Trikey is in the engine bay. The fault appears to be the wiring between the 2 sensors and the plug in the engine bay, not a faulty sensor. I had the light come on for a while, then go off for a while, ....... Then came on and stayed on. Trikey fitted the plug to get the car through the MOT as having the warning light on is a failure regardless of how much meat is left on the pads. So all the wires are the same colour, that makes life a little more fun when tracing the fault SteveN
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Mods Fitted: Cruise Control; FBH with GSM (was FrenchMike's Remote) & dash button; Rear Blind; In-line Thermostat; wired in front & rear cameras; Mercedes DRL +DRL2; twin horns, twin usb power outlets, digital coolant temperature readout, Real Walnut dash, Walnut & black leather steering wheel, Walnut Handbrake grip, Towbar with full Rover harness. Rear seat cup holders. Wanted: Walnut auto gear stick handle Mods to do: all done , need to come up with some more. |
21st June 2020, 09:26 | #5 | |
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Quote:
So begin your rectification work by buying a new sensor complete with cable and plug (aftermarket are cheaper) and fit it but use cable ties to ensure that it cannot be released from the retaining bracket. The odds are that this will solve your problem without any further work being necessary. Simon
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21st June 2020, 09:55 | #6 | |
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Thanks Simon,
You are a bit ahead of me here: Quote:
SteveN
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Mods Fitted: Cruise Control; FBH with GSM (was FrenchMike's Remote) & dash button; Rear Blind; In-line Thermostat; wired in front & rear cameras; Mercedes DRL +DRL2; twin horns, twin usb power outlets, digital coolant temperature readout, Real Walnut dash, Walnut & black leather steering wheel, Walnut Handbrake grip, Towbar with full Rover harness. Rear seat cup holders. Wanted: Walnut auto gear stick handle Mods to do: all done , need to come up with some more. |
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21st June 2020, 10:33 | #7 |
I really should get out more.......
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As in SD1too's post - the sensor wiring. The circuit is from the instrument panel, through the front sensor, through the rear sensor, and then to Earth. When the circuit is broken by the sensor wearing away, the Earth connection is broken and the warning light is switched on.
As shorting out the plug re-connects the circuit (in place of the break in the sensor cable) the Earth connection cancels the warning light. |
21st June 2020, 12:54 | #8 |
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Find the wiring break and just join the ends back together again.---
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22nd June 2020, 08:51 | #9 | |
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Quote:
That is the plan, but first I have to find the break SteveN
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Mods Fitted: Cruise Control; FBH with GSM (was FrenchMike's Remote) & dash button; Rear Blind; In-line Thermostat; wired in front & rear cameras; Mercedes DRL +DRL2; twin horns, twin usb power outlets, digital coolant temperature readout, Real Walnut dash, Walnut & black leather steering wheel, Walnut Handbrake grip, Towbar with full Rover harness. Rear seat cup holders. Wanted: Walnut auto gear stick handle Mods to do: all done , need to come up with some more. |
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22nd June 2020, 08:58 | #10 |
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Take a look at the offside rear plug, it resides behind the back part of the arch liner.
If either is open circuit, the lamp lights, I have disabled both sensors on the entire fleet, it simply isn't required as I can see how much meat is left on the pads through the wheel. Brian |
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