Circuit Description
The accelerator pedal assembly with accelerator position sensor relays the accelerator
percentage requested by the operator to the electronic control module (ECM). Percent
accelerator is used by the ECM to determine fueling. In order for the accelerator position
sensor to function properly, it is necessary that a good +5-VDC supply voltage is available.
Component Location
The accelerator position sensor is located on the accelerator pedal inside the vehicle cab.
Cummins ISB CM550 (1990-94) Fault Code: 443 PID: SID 232 SPN: 620 FMI: 3 Accelerator Position Sensor Circuit
Cummins ISB CM550 (1990-94) Fault Code: 443 PID: 91 SPN: 620 FMI: 3 Accelerator Position Sensor Circuit
Cummins ISB CM550 (1990-94) Fault Code: 442 PID: 168 SPN: 168 FMI: 0 Unswitched Battery Supply Circuit
Cummins ISB CM550 (1990-94) Fault Code: 441 PID: 168 SPN: 168 FMI: 1 Unswitched Battery Supply Circuit
Cummins ISB CM550 (1990-94) Fault Code: 434 PID: SID 251 SPN: 627 FMI: 2 Unswitched Battery Supply Circuit
Cummins ISB CM550 (1990-94) Fault Code: 433 PID: 102 SPN: FMI: 2 Intake Manifold Pressure Sensor Circuit
