Circuit Description

When ignition switch is in UNLOCK position, certain class 2 messages do not transmit. Instrument Panel Cluster (IPC) suspends operation of indicators and gauges that are dependent on these messages until ignition switch is no longer in UNLOCK position. DTC sets when ignition 0 voltage circuit is less than 75 percent of battery voltage for more than one second. When DTC is in effect:

• Odometer and PRNDL displays do not illuminate.
• Fuel gauge and engine coolant temperature gauges default to minimum indication.
• Scan tool does not communicate with IPC.