Electrical Data

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