Discovery II
BRAKES
DESCRIPTION AND OPERATION
70-17
SLABS ECU
The SLABS ECU is attached to a bracket behind the front passenger glovebox. Brake related inputs are processed
by the SLABS ECU, which then outputs control signals to the ABS modulator. Five electrical connectors interface the
SLABS ECU with the vehicle wiring.
SLABS ECU connector pin details
Connector/Pin
No.
Description
Input/Output
C0504
1
Battery supply
Input
2
Ignition supply
Input
3
Road speed
Output
4
Rough road (V8 models only)
Output
5
K line (diagnostics)
Input/Output
7
Reverse gear
Input
8
Return pump monitor
Input
9
Brake warning lamp
Output
10
Engine data (throttle position, torque, engine type, gearbox type)
Input
11
Transfer box range
Input
12
Earth
-
13
ETC warning lamp
Output
14
HDC switch
Input
15
Neutral selected (automatic gearbox only)
Input
16
HDC fault warning lamp
Output
17
HDC information warning lamp
Output
18
ABS warning lamp
Output
C0505
1
Front left wheel speed
Input
2
Front left wheel speed
Input
3
Rear right wheel speed
Input
4
Front right wheel speed
Input
5
Front right wheel speed
Input
6
Rear right wheel speed
Input
7
Rear left wheel speed
Input
8
Rear left wheel speed
Input
C0506
1
Front left outlet solenoid valve
Output
2
Front left inlet solenoid valve
Output
3
Earth
-
4
Front right outlet solenoid valve
Output