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Cummins ISX12 CM2250 (2010-12) Fault Code: 241 ...

Circuit DescriptionThe vehicle speed sensor senses the speed of the tailshaft gear on the vehicle’s transmission. This speed signal is then transmitted to the engine engine control module (ECM) and...

Cummins ISX12 CM2250 (2010-12) Fault Code: 2398...

Circuit DescriptionThe ambient air temperature sensor is a variable resistor sensor and is used to measure the temperature of the ambient air. The electronic control module (ECM) uses this temperature...

Cummins ISX12 CM2250 (2010-12) Fault Code: 239 ...

Circuit DescriptionThe sensor supply 3 circuit provides a 5 volt supply to the primary engine speed/position sensor. Component LocationNot applicable. Conditions for Running the DiagnosticsThis diagnostic runs continuously when the...

Cummins ISX12 CM2250 (2010-12) Fault Code: 2387...

Circuit DescriptionThe VGT is electronically activated by the VGT actuator. The VGT actuator is a smart device that receives information via the J1939 data link from the primary engine control...

Cummins ISX12 CM2250 (2010-12) Fault Code: 238 ...

Circuit DescriptionThe sensor supply 3 circuit provides a 5 volt supply to the primary engine speed/position sensor. Component LocationNot Applicable Conditions for Running the DiagnosticsThis diagnostic runs continuously when the...

Cummins ISX12 CM2250 (2010-12) Fault Code: 2377...

Circuit DescriptionThe fan control circuit is a device used by the engine to control the fan operation. When the electronic control module (ECM) energizes the fan control circuit, the engine...