Illustration 62 g03711262
Schematic for the temperature sensors for the Clean Emissions Module (CEM) with a DOC/DPF/SCR
The air inlet temperature sensor and the coolant
temperature sensor are passive sensors. Each
sensor provides a temperature input to the ECM. The
ECM controls following operations:
• Fuel delivery
• Injection timing
The operating range for the sensors
. . . . . . . . . . . . . . . . . −40° to 125°C ((−40° to 257°F))
The operating range for the fuel temperature sensor
. . . . . . . . . . . . . . . . . −40° to 120°C ((−40° to 248°F))
The sensors are also used for engine monitoring.
68 UENR4490-01
Engine Operation
This document has been printed from SPI2. NOT FOR RESALE
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