This document is a Cummins fault 134 diagnostic procedure for the remote accelerator pedal or lever position sensor 1 circuit. It identifies the voltage-below-normal or short-to-low-source fault, the ECM response, clearing conditions, and shop troubleshooting notes for the ISB6.7 CM2350 platform.
Official Cummins fault 134 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 the extract |
| Year/Revision | Unknown; copyright 2017 shown |
| Pages | 2 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Document table of contents
- FAULT CODE: 134
- PID: P372
- SPN: 974
- FMI: 4/4
- LAMP: RED
- REMOTE ACCELERATOR PEDAL OR LEVER POSITION SENSOR 1 CIRCUIT – VOLTAGE BELOW NORMAL OR SHORTED TO LOW SOURCE
- CIRCUIT DESCRIPTION
- COMPONENT LOCATION
- 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 covers Cummins ISB6.7 CM2350 engines from the 2013-17 group where the OEM-installed remote accelerator pedal or lever position sensor circuit is used. The component location varies by original equipment manufacturer, so the document directs technicians to the OEM service manual and the appropriate OEM wiring diagram for vehicle-specific harness routing and connector identification. For official engine and service information, visit Cummins official website.
Who needs this Cummins fault 134 manual
Workshop owners, diesel mechanics, and fleet technicians need this Cummins fault 134 manual when a truck logs SPN 974 FMI 4/4 and turns on the red STOP ENGINE lamp. It is most useful for checking low signal voltage, shorts to engine ground or return wires, open circuits in the signal, supply, or return wiring, damaged sensor conditions, and intermittent harness faults found by flexing the harness while monitoring the diagnostic tool.
The procedure states that the diagnostic runs continuously with the keyswitch ON or the engine running. The fault sets when the Engine Control Module detects remote accelerator pedal signal voltage below 0.132-VDC for more than 20 seconds. Repair validation is described as a key cycle, engine start, and one minute of idle, after which the diagnostic tool status changes to INACTIVE when the test passes and the ECM turns off the red STOP ENGINE lamp. The Reset All Faults command can clear active and inactive faults and extinguish the MIL for OBD applications. The shop notes also state that the three wires in the remote accelerator position sensor circuit must be twisted together and that OEM Power Distribution Center fuses and relays should be checked for loose, missing, or intermittent connections when related intermittent power supply and datalink communication issues are present.
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