Description & Operation

WARNING: This page is about a different car, the 2002 Lincoln Navigator and 2002 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

Analog instrument cluster is equipped with speedometer, fuel, oil pressure, temperature and voltage gauges. Some models are equipped with tachometer. Instrument cluster is Hybrid Electronic Cluster (HEC) with self-diagnostic capability. All models equipped are equipped with a Generic Electronic Module (GEM). GEM has self-diagnostic capabilities.

Speedometer, odometer, engine coolant temperature, service engine soon and low range indicator input signals are sent from Powertrain Control Module (PCM) to HEC over standard corporate protocol communication network buses. SERVICE ENGINE SOON indicator will illuminate when PCM has set a diagnostic trouble code. For information on networks, see MODULE COMMUNICATIONS NETWORK - EXPEDITION & NAVIGATOR article.