Transmission Control Module (TCM) or Powertrain Control Module (PCM)

Displays 0.0-25.5 V. This parameter is the system voltage measured by the TCM or PCM at the TCM or PCM ignition input when the ignition switch is in the RUN position.

Displays Park, Park/Reverse, Reverse, Reverse/Neutral, Neutral, Neutral/Drive 4, Drive 4, Drive 4/Drive 3, Drive 3, Drive 3/Drive 2, Drive 2, Drive 2/Drive 1, Drive 1, Invalid or Open. The IMS Range display represents a decoded status of the four inputs from the IMS. This range includes all possible in-between gear states as well as the detent gear states. The combination of IMS inputs to the TCM or PCM are used by the TCM or PCM in order to determine what position the manual valve is in at any time.

Displays LOW or HI for the state of each of the four inputs from the IMS. LOW displayed indicates a low voltage signal (0 volts) being monitored at the TCM/PCM. HI displayed indicates a high voltage signal (B+) being monitored at the PCM.

Displays ON when the brake pedal is depressed and the brake switch contacts close. Displays OFF when the brake pedal is released and the brake switch contacts open.