Cumminz

Cummins ISB CM550 (1990-94) Fault Code: 375 PID...

Circuit DescriptionThe ECM contains the calibration-specific parameter to control the engine’s performance and diagnostics. The fuel pump has its own calibration to interpret the ECM message and controlthe pump. If...

Cummins ISB CM550 (1990-94) Fault Code: 375 PID...

Circuit DescriptionThe ECM contains the calibration-specific parameter to control the engine’s performance and diagnostics. The fuel pump has its own calibration to interpret the ECM message and controlthe pump. If...

Cummins ISB CM550 (1990-94) Fault Code: 374 PID...

Circuit DescriptionFuel pump self-test is provided at power-up. In an ideal case, an active Fault Code 374indicates a fuel pump defect and can trigger the engine light/malfunction indicator light at...

Cummins ISB CM550 (1990-94) Fault Code: 374 PID...

Circuit DescriptionFuel pump self-test is provided at power-up. In an ideal case, an active Fault Code 374indicates a fuel pump defect and can trigger the engine light/malfunction indicator light at...

Cummins ISB CM550 (1990-94) Fault Code: 373 PID...

Circuit DescriptionThis circuit provides a secondary fuel shutoff signal from the engine control module (ECM) to the fuel pump. Component LocationThe fuel pump is located on the back side of...

Cummins ISB CM550 (1990-94) Fault Code: 373 PID...

Circuit DescriptionThis circuit provides a secondary fuel shutoff signal from the engine control module (ECM) to the fuel pump. Component LocationThe fuel pump is located on the back side of...

Cummins ISB CM550 (1990-94) Fault Code: 373 PID...

Circuit DescriptionThis circuit provides a secondary fuel shutoff signal from the engine control module (ECM) to the fuel pump. Component LocationThe fuel pump is located on the back side of...

Cummins ISB CM550 (1990-94) Fault Code: 373 PID...

Circuit DescriptionThis circuit provides a secondary fuel shutoff signal from the engine control module (ECM) to the fuel pump. Component LocationThe fuel pump is located on the back side of...

Cummins ISB CM550 (1990-94) Fault Code: 372 PID...

Circuit DescriptionThis circuit is used for limp home acceleration if communication between the engine controlmodule (ECM) and fuel pump is lost. The circuit allows for a two-stage acceleration wherethere are...

Cummins ISB CM550 (1990-94) Fault Code: 372 PID...

Circuit DescriptionThis circuit is used for limp home acceleration if communication between the engine controlmodule (ECM) and fuel pump is lost. The circuit allows for a two-stage acceleration wherethere are...

Cummins ISB CM550 (1990-94) Fault Code: 372 PID...

Circuit DescriptionThis circuit is used for limp home acceleration if communication between the engine controlmodule (ECM) and fuel pump is lost. The circuit allows for a two-stage acceleration wherethere are...

Cummins ISB CM550 (1990-94) Fault Code: 372 PID...

Circuit DescriptionThis circuit is used for limp home acceleration if communication between the engine controlmodule (ECM) and fuel pump is lost. The circuit allows for a two-stage acceleration wherethere are...

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