Body Control Module (BCM)

Battery Voltage: Displays 0.0-25.5 V. This parameter is the system voltage measured by the PZM at the PZM battery input.

Park Relay: Displays indicates ON when the body control module applies the ground to the Park Relay control circuit.

Powertrain Control Module (PCM)

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

IMS (Transmission Internal Mode Switch) Range: 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 PCM are used by the PCM in order to determine what position the manual valve is in at any time.

IMS (Internal Mode Switch) States A/B/C/P: 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 PCM. HI displayed indicates a high voltage signal (B+) being monitored at the PCM.