Freelander System Description and Operation
BRAKES
70-18
DESCRIPTION AND OPERATION
Checks Performed By Diagnostics
Fault
Status of Warning Lamps
Default Strategy
ABS
ETC
HDC
Fault
HDC Information
ABS ECU internal failure
On
On
On
Off
ABS: Disabled.
ETC: Disabled.
HDC: Disabled.
ECM input failure
Off
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.
Sticking throttle
Off
Off
On
Off*
ABS: Enabled.
ETC: Disabled.
HDC: Immediately disabled if not in
active braking mode, faded out then
disabled if in active braking mode.
Implausible gear position
input
Off
Off
On
Off*
ABS: Enabled.
ETC: Enabled.
HDC: Immediately disabled if not in
active braking mode, faded out then
disabled if in active braking mode.
No reference earth
On
On
On
Off
ABS: Disabled.
ETC: Disabled.
HDC: Disabled.
Failure of ABS sensor
On
On
On
Off†
ABS: Enabled.
ETC: Enabled.
HDC: Immediately disabled if not in
active braking mode, faded out then
disabled if in active braking mode.
Failure of 2 ABS sensors
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 2
ABS sensors
On
On
On
Off
ABS: Disabled.
ETC: Disabled.
HDC: Disabled.
Failure of input 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
input 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.