Caravan FWD V6-3.8L VIN L (1999)
Turn Signal Flasher: Description and Operation
Combination Flasher Operation
SYSTEM OPERATION
The turn signals are actuated with a lever on the left side of the steering column just ahead of the steering wheel. The signals are automatically
turned off by a canceling cam (two lobes molded to the clock- spring mechanism). The cam comes in contact with the cancel actuator on the turn
signal (multi-function) switch assembly. Either cam lobe, pushing on the cancel actuator, returns the switch to the OFF position.
Lane change signaling is actuated by applying partial turn signal stalk movement toward the direction desired until the indicator lamps flashes in
the instrument cluster. When the switch stalk is released the stalk will spring back into the neutral position turning OFF the turn signal.
With the ignition switch ON and the turn signal switch stalk actuated left or right, current flows through the:
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Combination flasher
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Multi-function switch
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Turn indicator lamp
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Front and rear turn signal bulbs.
A chime will sound after the vehicle has traveled a distance of approximately 0.5 Mile with the turn signal ON.
Circuit Operation
The turn signal and hazard flasher system used in this vehicle is controlled by the combination flasher located in the junction block. On vehicles
built for sale in Canada the Daytime Running Lamp (DRL) module is part of the combination flasher.
Power for the combination flasher is supplied from two sources. One is a direct battery feed on circuit L9. This circuit is HOT at all times and
protected by a 20 Amp fuse located in cavity 19 of the Power Distribution Center (PDC).
The other power source is a fuse battery feed from the ignition switch on circuit F20. This circuit is HOT in the RUN position only and connects
from the ignition switch to the combination flasher.
Power for the F20 circuit is supplied on circuit A22/A2. This circuit originates at the PDC and is protected by a 40 Amp fuse located in cavity 2.
LEFT TURN SIGNALS
Circuit Operation
When the operator selects the left turn signal, circuit L305 is connected to the Z1 ground circuit through the turn signal switch.
The combination flasher senses the position of the switch and supplies power to the L61 and L63 circuits.
Circuit L61 connects from the combination flasher to the left front turn signal lamp. Ground for the lamp is supplied on circuit Z1 and terminates
at the left cowl panel.
Circuit L63 connects from the combination flasher to the left rear turn signal lamp. Ground for the lamp is supplied on circuit Z1 and terminates at
the rear body ground. This circuit is also spliced and provides an input to the Body Control Module (BCM) to indicate the turn signals are ON and
to the indicator lamp in the message center.
RIGHT TURN SIGNALS
Circuit Operation
When the operator selects the right turn signal circuit L302 is connected to the Z1 ground circuit through the turn signal switch.
The combination flasher senses the position of the switch and supplies power to the L60 and L62 circuits.
Circuit L60 connects from the combination flasher to the right front turn signal lamp. Ground for the lamp is supplied on circuit Z1 and terminates
at the right cowl panel.
Circuit L62 connects from the combination flasher to the right rear turn signal lamp. Ground for the lamp is supplied on circuit Z1 and terminates
at the rear body ground. This circuit is also spliced and provides an input to the Body Control Module (BCM) to indicate the turn signals are ON
and to the indicator lamp in the message center.
