Freelander System Description and Operation
CONTROL UNITS
DESCRIPTION AND OPERATION
86-3-5
Self Test Mode
The CCU can be put into a self test mode to enable the inputs and outputs to be tested for correct functionality without
the need for TestBook/T4. To put the CCU into the self test mode the vehicle must be unlocked and disarmed, then
the ignition turned on and the following sequence completed within 4 seconds:
l
Hold the rear fog guard lamp switch on.
l
Turn the ignition off.
l
Turn the ignition on.
l
Release the rear fog guard lamp switch.
On successful entry to the self test mode the CCU simultaneously operates the sounder and illuminates the courtesy
lamps for 0.8 second.
When testing an input, e.g. a door open switch, on successful receipt of the input the CCU also simultaneously
operates the sounder and illuminates the courtesy lamps for 0.8 second.
Outputs are tested in sequence using the CDL lock switch to progress through the outputs. A CDL unlock request
repeats the last test. Outputs are either operated continuously until the CDL lock switch is released, or operated with
a pulse.
Self Test Outputs Sequence
Self test mode is cancelled when the ignition is turned off, if oil pressure is sensed (i.e. engine running) or if the vehicle
speed exceeds 0.6 mph (1 km/h).
Output
Test Type
Rear fog lamps
Continuous
Lock
Pulsed for 0.76 second
Superlock
Pulsed for 0.76 second
Unlock
Pulsed for 0.76 second
Front wiper
Continuous, then self parks
Alarm LED
Continuous
Volumetrics
Continuous
Horn
Pulsed for 0.8 second
Heated windscreen
Pulsed for 0.8 second
Heated rear window
Pulsed for 0.8 second
Tail window down
Pulsed, drives fully down
Tail door actuator
Pulsed for 0.44 second
Tail window up
Pulsed, drives fully up
Rear wiper
Continuous
Hazard lamps
Continuous
Door open warning
Continuous
Seat belt warning lamp
Continuous
Handbrake/Brake warning lamp
Continuous
Daytime running lamps
Continuous