Lamps/Lighting - Exterior; Lamps/Lighting - Exterior Description Description - Police; Description - Turn Signal & Hazard Warning System; Operation - Turn Signal & Hazard Warning System - Chrysler 300M Service Manual

LH

LAMPS/LIGHTING - EXTERIOR

DESCRIPTION
DESCRIPTION - POLICE
There are three pair of twisted 18-gauge wires
from the interior-to-front bumper beam area to be
used for the auxiliary flashers, siren, speaker, or con-
trol circuit usage. The twisted pairs are taped back
to the wire harness right by the wire feed to the
ambient temperature sensor behind the front fascia,
in front of the condenser, just to the passenger side of
the vehicle centerline. All police vehicle wiring (addi-
tional circuits added) is taped back to the wire har-
ness with green tape for identification. Refer to
Wiring Diagrams for location and circuit description.
The police package includes a Wig Wag (alternat-
ing flashing of the vehicle high beam headlamps)
connector underneath the instrument panel. This
connector is hard wired to the front high beam head-
lamps and is intended for use with an aftermarket
lighting control module. Refer to Wiring Diagrams for
location and circuit description.
DESCRIPTION - TURN SIGNAL & HAZARD
WARNING SYSTEM
The turn signal and hazard warning system
includes the following major components:
• Combination Flasher
• Hazard Warning Switch
• Turn Signal Cancel Cam
• Turn Signal Indicators
• Turn Signal Lamps
• Turn Signal Switch
SUPPLEMENTAL INDICATORS - 300M SPECIAL
The 300M Special has an added feature to the turn
signal system. Mounted on the outside of the left and
right power outside mirrors are supplemental indica-
tors. These are intended for additional indication to
alert other drivers to see when the vehicle is turning
or changing lanes.
These supplemental indicators are an integral part
of the outside power mirror assembly and cannot be
serviced separately. If found to be faulty or defective,
the entire power outside mirror must be replaced.
These indicators are LED's and contain resistors
internally to maintain proper operating voltage. The
secondary indicators are spliced directly into the turn
signal circuit.
LAMPS/LIGHTING - EXTERIOR 8L - 3
OPERATION - TURN SIGNAL & HAZARD
WARNING SYSTEM
The turn signal system operates on battery voltage
received on a fused ignition switch output (RUN-
ACC) circuit so that the turn signals will only oper-
ate with the ignition
ACCESSORY positions. The hazard warning system
operates on non-switched battery voltage received on
a fused B(+) circuit so that the hazard warning
remains operational regardless of the ignition switch
position. When the turn signal system is activated,
the turn signal switch and the combination flasher
will cause the selected turn signal indicator, front
park/turn signal lamp, and rear tail/stop/turn signal
lamp to flash ON and OFF. When the hazard warn-
ing system is activated, the hazard warning switch
and the combination flasher will cause both the right
side and the left side turn signal indicators, front
park/turn signal lamps, and rear tail/stop/turn signal
lamps to flash ON and OFF.
SUPPLEMENTAL INDICATORS - 300M SPECIAL
When the multi-function switch requests a left or
right turn, the voltage is sent to the front and rear
turn signals as well as the corresponding supplemen-
tal indicator. For diagnosis of the supplemental indi-
cators, (Refer to
MIRRORS - DIAGNOSIS AND TESTING).
DIAGNOSIS AND TESTING - TURN SIGNAL &
HAZARD WARNING SYSTEM
When diagnosing the turn signal and hazard warn-
ing circuits, remember that high generator output
can burn out bulbs rapidly and repeatedly. If this is a
problem on the vehicle being diagnosed, be certain to
diagnose and repair the charging system as required.
If the problem being diagnosed is related to a failure
of the turn signals to automatically cancel following
completion of a turn, inspect the multi-function
switch for a faulty or damaged cancel actuator and
inspect the turn signal cancel cam on the clock
spring for damaged lobes or improper installation.
(1) Turn the ignition switch to the ON position.
Actuate the turn signal switch or the hazard warning
switch. Observe the turn signal indicator(s) in the
instrument cluster. If the flash rate is very high,
check for a turn signal bulb that is not lit or is very
dimly lit. Repair the circuits to that lamp or replace
the faulty bulb, as required. If the turn signal indi-
cator(s) fail to light, go to Step 2.
(2) Turn the ignition switch to the OFF position.
Check the fused ignition switch output (RUN-ACC)
fuse in the Junction Block (JB) and the fused B(+)
fuse in the Power Distribution Center (PDC). If OK,
go to Step 3. If not OK, repair the shorted circuit or
component as required and replace the faulty fuse(s).
switch in the
8 - ELECTRICAL/POWER
ON or