 | |
| Illustration 1 | g01001148 |
Coolant temperature circuit | |
The components of the coolant temperature circuit are the engine coolant temperature sensor, the Engine Electronic Control Module (Engine ECM), the gauge module, the AVSpare Monitoring System, and the engine coolant temperature gauge.
 | |
| Illustration 2 | g00997232 |
Front view of engine (1) Coolant temperature sensor | |
 | |
| Illustration 3 | g00997185 |
Left side view of engine (2) Engine ECM | |
 | |
| Illustration 4 | g00997577 |
Dash panel (3) AVSpare Monitoring System | |
 | |
| Illustration 5 | g00902410 |
Dash panel (4) Coolant temperature gauge (5) Gauge module | |
With the key start switch in the ON position, 24 volt power is supplied from the batteries via circuit breaker #10 to the AVSpare Monitoring System. 24 volt power is also supplied from the batteries via circuit breaker #3 and circuit breaker #11 to the Engine ECM. The Engine ECM supplies 5 volt power to the coolant temperature sensor.
Coolant temperature sensor (1) sends a signal to Engine ECM (2). The Engine ECM sends a signal via the AVS Data Link to AVSpare Monitoring System (3). The AVSpare Monitoring System sends a signal to gauge module (5) which indicates the engine coolant temperature on coolant temperature gauge (4).