Brakes (Default strategies): Description and operation
- Make
- Land Rover
- Model
- Discovery II (UK)
- Section
- Description and operation › Default strategies
BrakesDefault strategies
Default strategies
| Fault | Default strategy |
|---|---|
| Brake lamps relay | ABS: Enabled. ETC: Enabled. EBD: Enabled. HDC: Enabled. |
| Throttle position signal failure | ABS: Enabled. ETC: Disabled. EBD: Enabled. HDC: Immediately disabled if not in active braking mode; faded out then disabled if in active braking mode. |
| No reference earth | ABS: Disabled. ETC: Disabled. EBD: Partly disabled. HDC: Disabled. |
| Return pump or relay fault | ABS: Disabled. ETC: Disabled. EBD: Partly disabled. HDC: Disabled. |
| Shuttle valve switch failure | ABS: Deceleration threshold increased; return pump activated if sum of output valve actuation on one axle exceeds 140 milliseconds. ETC: Disabled. EBD: Inlet valves of rear axle close at vehicle deceleration rates of 0.3 g and above. HDC: Disabled. |
| SLABS ECU internal failure | ABS: Disabled. ETC: Disabled. EBD: Disabled. HDC: Disabled. |
| Supply voltage out of limits | ABS: Disabled. ETC: Disabled. EBD: Disabled. HDC: Disabled. |
Electrical data
Nominal resistance values for applicable brake control components are as detailed below:
| Component | Resistance, ohms |
|---|---|
| Brake lamp relay coil | 117 - 143 |
| Return pump relay coil | 82.8 - 101.2 |
| ABS sensor | 950 - 1100 |
| Shuttle valve switches, both open (brakes off) | 2977 - 3067 |
| Shuttle valve switches, both closed (brakes on) | 1007 - 1037 |
| Shuttle valve switches, one open, one closed | 1992 - 2052 |
| Inlet solenoid valve | 5.9 - 7.3 |
| Outlet solenoid valve | 3.0 - 3.6 |
Parts & tools for this job For Land Rover Discovery
- PARTBrake padsSearch: Land Rover Discovery brake pads
- TOOLBrake bleeder kitSearch: one man brake bleeder kit
- FLUIDBrake fluidSearch: brake fluid
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