Cumminz

Cummins ISB CM550 (1990-94) Fault Code: 368 PID...

Circuit DescriptionThe fuel pump uses an internal check to determine if the fuel injection pump can reach thecommanded timing. Component LocationThe fuel pump circuit is internal to the fuel pump....

Cummins ISB CM550 (1990-94) Fault Code: 368 PID...

Circuit DescriptionThe fuel pump uses an internal check to determine if the fuel injection pump can reach thecommanded timing. Component LocationThe fuel pump circuit is internal to the fuel pump....

Cummins ISB CM550 (1990-94) Fault Code: 367 PID...

Circuit DescriptionThis fault code indicates that the fuel pump speed/position signal is lost. Component LocationThe speed/position sensor is located in the fuel pump. Shop TalkThe fuel pump determines its speed...

Cummins ISB CM550 (1990-94) Fault Code: 367 PID...

Cummins ISB CM550 (1990-94) Fault Code: 366 PID...

Circuit DescriptionBattery voltage to the fuel pump is passed to the engine control module (ECM) through the controller area network datalink. Component LocationThe voltage measurement is located within the pump...

Cummins ISB CM550 (1990-94) Fault Code: 366 PID...

Cummins ISB CM550 (1990-94) Fault Code: 365 PID...

Circuit DescriptionPower is supplied to the through a relay. When the engine control module (ECM) switches the relay, power is supplied from the battery, through the relay, to the fuel...

Cummins ISB CM550 (1990-94) Fault Code: 365 PID...

Circuit DescriptionPower is supplied to the through a relay. When the engine control module (ECM) switches the relay, power is supplied from the battery, through the relay, to the fuel...

Cummins ISB CM550 (1990-94) Fault Code: 364 PID...

Circuit DescriptionThis circuit is used to communicate fueling, timing, and pump status messages between the ECM and pump controller. If this link is lost, the pump will operate in a...

Cummins ISB CM550 (1990-94) Fault Code: 364 PID...

Circuit DescriptionThis circuit is used to communicate fueling, timing, and pump status messages between the ECM and pump controller. If this link is lost, the pump will operate in a...

Cummins ISB CM550 (1990-94) Fault Code: 364 PID...

Circuit DescriptionThis circuit is used to communicate fueling, timing, and pump status messages between the ECM and pump controller. If this link is lost, the pump will operate in a...

Cummins ISB CM550 (1990-94) Fault Code: 364 PID...

Circuit DescriptionThis circuit is used to communicate fueling, timing, and pump status messages between the ECM and pump controller. If this link is lost, the pump will operate in a...