Home » ISX11.9 CM2250 - Service Manual » Cummins ISX11.9 CM2250 – Service Manual 019-370   EGR Differential Pressure Sensor

Cummins ISX11.9 CM2250 – Service Manual 019-370   EGR Differential Pressure Sensor

General Information

TOC

The exhaust gas recirculation (EGR) differential pressure sensor is located on the EGR mass measurement flow assembly.

 
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Remove

TOC

Disconnect the wiring harness connector.

Remove the mounting capscrews.

Remove the sensor.

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Clean and Inspect for Reuse

TOC

Clean the EGR differential pressure sensor and adapter mounting surfaces. Remove any dirt buildup or soot residue.

Inspect the EGR differential sensor bracket for cracks or fretting. If any damage is present, the sensor must be replaced. The bracket is not a serviceable component.

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Inspect the o-rings for cracks or other damage. Replace the o-rings if cracks or other damage is found.

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Install

TOC

Install the EGR differential pressure sensor. Make sure the o-rings are captured on the bottom of the sensor.

Torque Value:  20  n.m  [177 in-lb]

Connect the wiring harness to the sensor. An audible click will be heard when the connector locks in place.

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Make sure the sensor is installed correctly. There is a locating feature, or raised nub, located on the EGR mass measurement flow assembly to aid in the installation of the sensor. When the sensor is installed correctly, it will sit flat on the EGR mass measurement flow assembly and will clear the raised nub.

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Start the engine and verify proper operation (no fault codes).

NOTE: An active EGR differential pressure sensor fault code requires a certain procedure, once the repair is complete, to get the fault code to go inactive.

NOTE: The engine must be started and the engine coolant temperature must be above 68°C [154°F]. The intake manifold air temperature must be above 7°C [45°F].

NOTE: Shut the keyswitch OFF for 30 seconds and turn the keyswitch back ON. The fault code will then transition to inactive.

 
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Last Modified:  07-Jul-2010