This Cummins 133 fault document explains Fault Code 133 for the remote accelerator pedal or lever position sensor 1 circuit on Cummins ISB6.7 CM2350 applications. It identifies the circuit description, fault reason, driver warning lamp behavior, diagnostic running conditions, clearing conditions, and shop troubleshooting notes for high signal voltage.
Official Cummins 133 fault document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB6.7 CM2350 (2013-17) |
| System/Group | DTCs; remote accelerator pedal or lever position sensor 1 circuit |
| Publication no. | Not shown in extract |
| Year/Revision | Unknown; copyright 2017 |
| Pages | 2 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Document table of contents
- Fault Code: 133
- PID: P372
- SPN: 974
- FMI: 3/3
- Lamp: Red
- Remote Accelerator Pedal or Lever Position Sensor 1 Circuit – Voltage Above Normal or Shorted to High Source
- Circuit Description
- Component Location
- Reason
- Effect
- Conditions for Running the Diagnostics
- Conditions for Setting the Fault Codes
- Action Taken When the Fault Code is Active
- Conditions for Clearing the Fault Code
- Shop Talk
Applicable truck models
This file applies to Cummins ISB6.7 CM2350 engines from the 2013-17 coverage group where Fault Code 133 is used for a remote accelerator pedal or lever position sensor 1 circuit fault. The component location varies with each original equipment manufacturer, so the document directs technicians to the OEM service manual and the appropriate OEM wiring diagram when checking harnesses or connections supplied by the OEM. The circuit described includes a remote accelerator pedal position 5 volt supply, remote accelerator pedal position return, and remote accelerator pedal position signal. See the engine manufacturer at Cummins official website.
Who needs this Cummins 133 fault manual
Workshop diagnosticians, fleet mechanics, and service managers need this reference when a red STOP ENGINE lamp is linked to remote accelerator operation being disabled. The file is most useful for confirming the fault trigger of signal voltage greater than 4.37-VDC for more than 20 seconds and for reviewing likely causes such as a signal circuit shorted to battery or 5 volt supply, an open return circuit, a supply shorted to battery, or a malfunctioned position sensor.
The troubleshooting notes state that intermittent accelerator problems can be checked by monitoring signal voltage with a diagnostic tool while flexing the harness. Abrupt changes in the displayed voltage can indicate an intermittent connection, and the note specifies that the three wires in the remote accelerator position sensor circuit must be twisted together. To validate repair, the document lists a key cycle, engine start, and one minute of idle; when the diagnostic runs and passes, the fault status changes to inactive and the red STOP ENGINE lamp turns off.
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