DESCRIPTION AND OPERATION
4.48 RANGE ROVER
Steering Angle Sensor
The steering angle sensor (C0862) receives a constant battery feed from fuse 13 of the
passenger compartment fuse box (C0586) on an RG wire, and a feed from the energised
ECM relay (C1895) via fuse 51 of the passenger compartment fuse box (C0584) on an RW
wire. The sensor (C0862) is earthed on an NB wire.
The steering angle sensor (C0862) transmits steering angle and rate of steering messages
via the Can bus on YN (low) and YB (high) wires. These signals are created by two
potentiometers located within the sensor. The ABS ECU uses these messages to enable the
DSC system control lateral stability.
Brake Fluid Level Warning Switch
If the brake fluid level is below the minimum level, DSC operation is suspended. The ABS
ECU (C0506) monitors the condition of the brake fluid level switch (C0026) via an NGY wire.
HDC
The HDC switch (C0365) is mounted on the side of the gear selector lever, and is provided
an auxiliary ignition feed from fuse 35 of the passenger compartment fuse box (C0587) on
a GBY wire. The ABS ECU (C0506) monitors the condition of the HDC switch (C0365) via
a BG wire.
EBA
Brake Pedal Switch
The brake pedal switch (C0075) is provided an auxiliary ignition feed from fuse 9 of the
passenger compartment fuse box (C0587) on a PY wire. The ABS ECU (C0506) monitors
the condition of the brake pedal switch (C0075) on a UR wire to enable it to operate its
Emergency Brake Assist (EBA) function.
Diagnostic Socket
The diagnostic socket is located behind an access panel on the drivers side of the fascia.
The ABS ECU (C0506) and the steering angle sensor (C0862) can be interrogated by T4
via the K line bus on WP wires.
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