Indicators

Circuit Operation

The indicator lights are controlled by different conditions set forth in their associated systems. See the associated system for the indicator light circuit description.

Low Fuel Warning Light
The engine control module (ECM) monitors the fuel level by the resistance level in the fuel tank unit. The fuel tank unit resistance varies from approximately 80 ohms with the tank full, to 290 ohms with the tank empty. The ECM or PCM then uses this information to provide ground (through the multi-plexed indicator control unit for the 3.2L) to the low fuel warning light, illuminating it when the fuel level is low.

Bulb Check
With the starter switch in ON or START, battery voltage is applied through the CB-11 METER fuse to the indicator lights. The generator will provide ground to the circuit until the engine is running. The lights go on to test the light bulbs and then go off after the engine is started.

Tire Pressure Monitoring System
The Tire Pressure Monitoring System (TPMS) monitors the pressure in all 4 road tires and spare tire. The TPMS uses wireless technology to monitor tire pressure levels. The tire pressure sensors, mounted to each wheel as part of the valve stem, transmit tire pressure readings to the Tire Pressure Monitor Receiver located in the instrument panel.