RAM 2500 Truck 2WD L6-5.9L DSL Turbo VIN 7 (2001)
Turn Signal Cancel Cam: Description and Operation
The turn signal cancel cam is concealed within the steering column below the steering wheel. The turn signal cancel cam consists of two lobes that are
integral to the lower surface of the clockspring rotor. The clockspring mechanism provides turn signal cancellation as well as a constant electrical
connection between the horn switch, driver airbag, speed control switches, and remote radio switches on the steering wheel and the instrument panel wire
harness on the steering column. The housing of the clockspring is secured to the steering column and remains stationary. The rotor of the clockspring,
including the turn signal cancel cam lobes rotate with the steering wheel.
The turn signal cancel cam is serviced as a unit with the clockspring and cannot be repaired. If faulty or damaged, the entire clockspring unit must be
replaced. (Refer to RESTRAINTS/ CLOCKSPRING - REMOVAL).
The turn signal cancel cam has two lobes molded into the lower surface of the clockspring rotor. when the turn signals are activated by moving the
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. In other words, if the left turn signal detent is selected, the lobes of thecancel cam will ratchet past the cancel
actuator when the steering wheel is rotated to the left, but will unlatch the cancel actuator as the steering wheel rotates to the right and returns to center,
which will cancel the turn signal event and release the control stalk from the detent so it returns to the neutral OFF position.
