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ELECTRICAL
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ELECTRICAL
Low Current Failure
If an open circuit is detected the BCM
shall flash the Directional Indicators at a fast
rate of 180 ± 30 cycles with a duty cycle 50%.
On detecting a normal current draw level the
Directional Indicators will return to the normal
flash rate. Failure must be diagnosed and fast
flash rate commence at the first illuminated
phase after activation. An open circuit side
repeater bulb will NOT trigger the Fast rate.
Exterior Directional Indicator failure
detection will be inhibited when the battery
voltage is below 8V or above 16V or when the
Vehicle Power State is CRANK. During an
under/over voltage condition the BCM shall
hold the previous Directional Indicator rate until
the operating voltage returns to normal. Fast
rate flashing is also active during 3 flash mode.
High Current Failure
If a short to ground is detected the BCM
shall stop flashing turn signals lamps on the
side where the failure is detected. The BCM
will retry the failed lamp the next time the
directional turn signal associated with the
failure is activated or any function using the
Directional Indicators is requested.
Hazard warning:
Hazard Warning is active in all Vehicle
Power States. In Vehicle Power States OFF, ACC,
ON and START
,
audible feedback is provided by
the Instrument Cluster.
Hazard Warning can be activated by
Manual Switch or by the Inertia Switch, causing the
Hazard lights to flash at 90 ± 30 cycles/min at duty
cycle 50%. When Hazard Warning is active, the
Hazard Warning Illumination should flash at the
same rate as the exterior Hazard Lights.
The Hazard Warning switch is a non latch
able switch. When the hazard switch changes
state from low to high this shall be detected as a
valid switch press. Inertia Switch functionality can
be only activated when power mode is ignition.
Hazard warning lamps are already active
and the Inertia switch becomes active, there will be
no change in operation of the Hazard warning
lamps but Hazard warning LED will be made OFF.
If the Hazard warning lamps are already
active due to normal Hazard Switch operation and
hazard switch is pressed again, Hazard warning
Lamps and Hazard Warning LED will be made
OFF.
If Hazard warnings Lamps are active due
to Inertia switch activation then Hazard warning
lamps will be made OFF if Inertia switch is
deactivated. In this case Hazard warning LED will
remain OFF.
Hazard switch is monitored for a stuck
switch condition .
Hazard Warning Switch Illumination:
The Hazard warning switch is fitted with a
single LED for both night time illumination of the
switch, and visual feedback when the hazard lights
have been activated.
The Hazard warning switch illumination
should flash in sequence with the directional
indicators only when the hazard warning is active.
i.e. a valid switch press has been detected to turn
the hazard warning on. The illumination should not
flash when the directional indicators are illuminated
for locking or alarm functionality.
Direction Indicators:
The Left and Right Direction Indicators are
active in Vehicle Power States IGNITION ON and
START.
Activation of the hazard function will cancel
the current Direction Indicator mode immediately.
When the hazard function is not active, the
Direction Indicator inputs should be evaluated
again to determine the current Direction Indicator
mode.
The left or right Direction Indicators are
selected using the Direction Indicator combination
switch. When selected, the appropriate Direction
Indicators lamps will flash at 90 ± 30 cycles/min
duty cycle 50%, beginning with the illuminated
phase, until the switch is released.
When the Direction Indicators combination
switch is returned to the neutral position during an
illuminated phase, the current phase is allowed to
finish. If the Vehicle Power State changes from
IGNITION ON or START to ACCESSORY or OFF
during an illuminated phase, the illumination will be
stopped immediately.