Exhaust Gas Temperature Sensors
WARNING: This page is about a different variant/trim than selected.
The exhaust gas temperature sensors are variable resistors that measures the temperature of the exhaust gas. The exhaust temperature sensor 1 is the first exhaust temperature sensor on the exhaust system, the following exhaust temperature sensors are counted upward from the engine outlet to the exhaust system end. The engine control module (ECM) supplies 5 V to the exhaust gas temperature signal circuit and supplies a ground to the low reference circuit. The exhaust gas temperature sensor temperature information is used by the ECM during the exhaust gas particulate filter cleaning process.
The following table illustrates the difference between temperature, resistance, and voltage:
| Exhaust Gas Temperature | Exhaust Gas Temperature Resistance | Exhaust Gas Temperature Signal Voltage |
|---|---|---|
| Cold | Low | Low |
| Warm | High | High |