Circuit Description

The crankshaft position (CKP) sensor A is a 24X sensor and contains a hall-effect switch. This solid state switching device produces 24 digital ON/OFF pulses per engine revolution. These pulses occur when the interrupter ring, mounted to the crankshaft damper assembly and containing 24 evenly spaced blades and windows, passes between the sensor tip and a magnet. The 24X sensor is connected directly to the powertrain control module (PCM). The PCM provides 12 volts to the sensor on a 12-volt reference circuit, and provides a ground on a low reference circuit. The PCM receives the pulses from the sensor on the medium resolution engine speed signal circuit. The PCM uses the 24X signal for enhanced smoothness and idle stability at lower engine speeds. The PCM monitors the CKP sensor A for errors. If the PCM receives an incorrect number of signals from the CKP sensor A, DTC P0336 sets.