Voltmeter

The IPC displays the system voltage as determined by the Dash Integration Module (DIM). The IPC receives a class 2 message from the DIM indicating the system voltage. The IPC uses the ignition 1 voltage circuit in order to drive the volt gauge if:
^ The PCM detects a malfunction in the charging system.
^ The IPC detects a loss of class 2 communications with the DIM.