Body Control Module (BCM)

Brake to Shift Input: Display indicates ON when the body control module (BCM) receives a PARK input message from the powertrain control module (PCM).

Brake to Shift Output: Displays indicates ON when the body control module applies power to the automatic transmission shift lock control power feed circuit.

Ignition 0: Display indicates ON when the ignition 0 input circuit of the module receives a battery signal from the ignition switch.

Ignition 1: Display indicates ON when the ignition 1 input circuit of the module receives a battery signal from the ignition switch.

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: 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.