Turn Signal Cancel Cam: Description and Operation
TURN SIGNAL CANCEL CAMDESCRIPTION
The turn signal cancel cam (3) is concealed within the steering column. The has two lobes (2) and integral latch features on a molded plastic ring that is snapped into the lower hub of the clockspring rotor, which is integral to the Steering Control Module (SCM) (1). The housing of the SCM also contains the clockspring mechanism and is secured to the top of the steering column just below the steering wheel where it remains stationary. The rotor of the clockspring mechanism, including the turn signal cancel cam rotates with the steering wheel.
The turn signal cancel cam can be separated from the clockspring rotor and is available for individual service replacement. The turn signal cancel cam cannot be adjusted or repaired and, if faulty or damaged, the cam must be replaced.
OPERATION
When the left multi-function switch control stalk is moved to a latched turn signal position, a turn signal cancel actuator is extended from the inside surface of the left multi-function switch housing toward the turn signal cancel cam. As the steering wheel is rotated to complete the turn, one of the two cam lobes will contact the actuator, automatically cancelling the turn signal event and releasing the latched left multi-function switch control stalk to the neutral position.