Normal Operation

The PCM communicates with the scan tool through the high speed controller area network (HS-CAN). Circuits (W/L) (HS-CAN +) and (W) (HS-CAN -) provide the network connection to the PCM. The PCM shares the HS-CAN with the four wheel drive (4WD) control module, the restraints control module (RCM), the occupant classification sensor module, the smart junction box (SJB), and the instrument cluster. Circuits (V/W) and (GY/R) provide voltage, and redundant circuit (B/V) provides ground.