Grand Cherokee 2WD Limited V8-4.7L (2002)
Turn Signal Cancel Cam: Description and Operation
The turn signal cancel cam is concealed within the multi-function switch housing below the steering wheel and the clockspring mechanism. The turn
signal cancel cam consists of a disc unit with two integral lobes. The upper lobe of the cam has an alignment hole that is used to align it with another hole
in the back of the multi-function switch mounting housing. The upper surface of the turn signal cancel cam features three holes, two round and one
oblong. These holes engage and key the cancel cam to three matching pins in the hub of the clockspring mechanism. The hub of the clockspring and the
turn signal cancel cam rotate with the steering wheel. The centered clockspring housing is then secured to the multi-function switch mounting housing
over the top of the turn signal cancel cam.
The turn signal cancel cam is serviced as a assembly with the multi-function switch housing. The turn signal cancel cam cannot be repaired and, if faulty
or damaged, the multi-function switch mounting housing unit must be replaced. (Refer to ELECTRICAL/LAMPS/LIGHTING - EXTERIOR/LEFT
MULTI- FUNCTION SWITCH - REMOVAL - MULTI- FUNCTION SWITCH MOUNTING HOUSING).
The turn signal cancel cam has two lobes. When the turn signals are activated by moving the left multi-function switch control stalk to a detent position,
a turn signal cancel actuator is extended from the inside surface of the multi-function switch housing toward the center of the steering column and the
turn signal cancel cam. When the steering wheel is rotated during a turning maneuver, one of the two turn signal cancel cam lobes will contact the turn
signal cancel actuator. The cancel actuator latches against the cancel cam rotation in the direction opposite that which is signaled.
