Description & Operation: Notes

WARNING: When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.

The Instrument Panel Cluster (IPC) uses an electric analog speedometer with stepper motor-driven odometer, analog fuel gauge and indicator lights. The IPC is backlit for nighttime illumination. Some models may be equipped with analog coolant temperature gauge, oil pressure gauge and voltmeter. For speedometer testing, see appropriate G - TEST W/CODES article in ENGINE PERFORMANCE.

NOTE: Some models use a Powertrain Control Module (PCM) rather than an Electronic Control Module (ECM). Aside from electronic engine controls, the modules also differ in that the PCM controls electronic transmission internals and cruise control system. Unless specifically stated, references to ECM also apply to PCM-equipped vehicles.