Freelander System Description and Operation
BRAKES
DESCRIPTION AND OPERATION
70-19
Electrical Data
Component resistance and voltage values are detailed below:
Failure of output valve
On
On
On
Off*
ABS: Enabled on unaffected hydraulic
circuit (if applicable), disabled on
affected hydraulic circuit(s).
ETC: Disabled.
HDC: Immediately disabled if not in
active braking mode, faded out then
disabled if in braking mode.
Failure of more than one
output valve
On
On
On
Off*
ABS: Enabled on unaffected hydraulic
circuit (if applicable), disabled on
affected hydraulic circuit(s).
ETC: Disabled.
HDC: Immediately disabled if not in
active braking mode, faded out then
disabled if in braking mode.
Battery short in more than
two input or output valve
circuits
On
On
On
Off
ABS: Disabled.
ETC: Disabled.
HDC: Disabled.
Return pump fault
On
On
On
Off
ABS: Disabled.
ETC: Disabled.
HDC: Disabled.
HDC relay fault
Off
Off
On
Off*
ABS: Enabled.
ETC: Enabled.
HDC: Enabled.
Supply voltage out of limits
On
On
On
Off*
ABS: Enabled.
ETC: Disabled.
HDC: Immediately disabled if not in
active braking mode, faded out then
disabled if in active braking mode.
* = Flashes if HDC faded out; † = Flashes if HDC in active braking mode
Component
Resistance, Ohms
HDC relay coil
73 to 89
ABS sensor (up to 2002 MY)
950 to 1100
ABS sensor (from 2002 MY)
1 maximum
Inlet solenoid valve
5.9 to 7.3
Outlet solenoid valve
3.0 to 3.6
Component
Signal
First gear switch
Earth when first gear selected.
Open circuit when first gear not selected.
HDC switch
Battery voltage when HDC selected.
Open circuit when HDC not selected.
Reverse gear switch
Battery voltage when reverse gear selected.
Open circuit when reverse gear not selected.
Fault
Status of Warning Lamps
Default Strategy
ABS
ETC
HDC
Fault
HDC Information