Hybrid Electronic Instrument Cluster (HEC) Gauges

Engine Coolant Temperature Gauge
Engine coolant temperature information is received by the Hybrid Electronic Cluster (HEC) from the Engine Coolant Temperature (ECT) sensor (2.0L engine) or ECT switch (2.5L engine). If the engine coolant temperature signal is missing or invalid, the HEC will move the engine coolant gauge to the cold position.

Fuel Gauge
The HEC receives the fuel level information from the fuel sending unit (part of the fuel pump module). When the fuel level is low, the resistance is low When the fuel level is high the resistance is high.

Speedometer
The HEC receives the vehicle speed signal from the Vehicle Speed Sensor (VSS).

Tachometer
The HEC receives tachometer information from the Powertrain Control Module (PCM). If the RPM information sent to the HEC is invalid or missing, the HEC will default the tachometer to 0.