Instrument Panel, Gauges and Warning Indicators: Description and Operation
Gauges and IndicatorsHow the Circuit Works
The gauges and indicators are part of the multiplex integrated control system. Some indicators are controlled by conditions in their specific systems. Information for these indicators is communicated from control unit to control unit across multiplex communication lines. The following indicators are communicated to the gauge control module through the multiplex integrated control system:
- ABS Indicator
- Charging System Indicator
- DRL Indicator
- ECO Indicator
- Fog Light Indicator
- High Beam Indicator
- Immobilizer System Indicator
- Lights On Indicator
- Low Oil Pressure Indicator
- Low Tire Pressure Indicator
- Maintenance Required Indicator
- MIL Indicator
- Seat Belt Reminder Indicator
- Security Indicator
- Side Airbag Cut-off Indicator
- SRS Indicator
- TPMS Indicator
- VSA System Indicator
- VSA Activation Indicator
Engine Coolant temperature gauge
The 5 V stabilizer circuit/controller area network controller built-into the gauge control module controls the engine coolant temperature gauge. The ECM/PCM provides engine coolant temperature information to the 5 V stabilizer circuit/controller area network controller through the fast controller area network (F-CAN) data lines. The ECM/PCM receives engine coolant temperature information from ECT sensor 1.
Fuel Gauge and Low Fuel Indicator
WARNING: Do not smoke while working on the fuel system. Keep open flame away from the work area. Drain fuel only into an approved container.
The fuel gauge and low fuel indicator are controlled by the 5 V stabilizer circuit/controller area network controller in the gauge control module. When the resistance of the fuel gauge sending unit changes, the 5 V stabilizer circuit/controller area network controller in the gauge control module sends a signal through a dedicated data line to the fuel gauge in the gauge control module to display fuel level. When it is determined that the fuel level is low, the low fuel level indicator is activated.
Speedometer
The speedometer is controlled by the 5 V stabilizer circuit/controller area network controller in the gauge control module. The 5 V stabilizer circuit/controller area network controller in the gauge control module receives vehicle speed information from the ECM/PCM through the fast controller area network (F-CAN) data lines. The 5 V stabilizer circuit/controller area network controller sends vehicle speed information through a dedicated data line to the speedometer in the gauge control module, which displays the vehicle speed.
Tachometer
The tachometer is controlled by the 5 V stabilizer circuit/controller area network controller in the gauge control module. The 5 V stabilizer circuit/controller area network controller in the gauge control module receives engine speed information from the ECM/PCM through the fast controller area network (F-CAN) data lines. The 5 V stabilizer circuit/controller area network controller controls the tachometer display.