Cumminz

Cummins ISB CM550 (1990-94) Fault Code: 422 PID...

Circuit DescriptionThe coolant level sensor monitors the coolant level within the coolant system and passesinformation to the engine control module (ECM) through the engine harness. This sensor isvery complex. Do...

Cummins ISB CM550 (1990-94) Fault Code: 422 PID...

Circuit DescriptionThe coolant level sensor monitors the coolant level within the coolant system and passesinformation to the engine control module (ECM) through the engine harness. This sensor isvery complex. Do...

Cummins ISB CM550 (1990-94) Fault Code: 418 PID...

Circuit DescriptionThe WIF sensor is attached to the fuel filter. The WIF sensor sends a signal to the electroniccontrol module (ECM) when a set volume of water has accumulated in...

Cummins ISB CM550 (1990-94) Fault Code: 418 PID...

Circuit DescriptionThe WIF sensor is attached to the fuel filter. The WIF sensor sends a signal to the electroniccontrol module (ECM) when a set volume of water has accumulated in...

Cummins ISB CM550 (1990-94) Fault Code: 415-SW ...

Circuit DescriptionThe oil pressure switch is used by the electronic control module (ECM) to detect the presenceof lubricating oil pressure. Component LocationThe oil pressure switch is located on the engine...

Cummins ISB CM550 (1990-94) Fault Code: 415-SW ...

Circuit DescriptionThe oil pressure switch is used by the electronic control module (ECM) to detect the presenceof lubricating oil pressure. Component LocationThe oil pressure switch is located on the engine...

Cummins ISB CM550 (1990-94) Fault Code: 415-SN ...

Circuit DescriptionThe oil pressure sensor is used by the electronic control module (ECM) to monitor thelubricating oil pressure. The ECM monitors the voltage on the signal pin and converts this...

Cummins ISB CM550 (1990-94) Fault Code: 415-SN ...

Circuit DescriptionThe oil pressure sensor is used by the electronic control module (ECM) to monitor thelubricating oil pressure. The ECM monitors the voltage on the signal pin and converts this...

Cummins ISB CM550 (1990-94) Fault Code: 391 PID...

Circuit DescriptionThe fuel pump relay is used to supply voltage to the fuel pump. The engine control module(ECM) can shut down the engine by cutting off the power to the...

Cummins ISB CM550 (1990-94) Fault Code: 391 PID...

Circuit DescriptionThe fuel pump relay is used to supply voltage to the fuel pump. The engine control module(ECM) can shut down the engine by cutting off the power to the...

Cummins ISB CM550 (1990-94) Fault Code: 387 PID...

Circuit DescriptionThe accelerator pedal assembly with accelerator position sensor relays the acceleratorpercentage requested by the operator to the electronic control module (ECM). Percent acceleratoris used by the ECM to determine...

Cummins ISB CM550 (1990-94) Fault Code: 387 PID...

Circuit DescriptionThe accelerator pedal assembly with accelerator position sensor relays the acceleratorpercentage requested by the operator to the electronic control module (ECM). Percent acceleratoris used by the ECM to determine...

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