This document is Cummins remote throttle sensor troubleshooting for Fault Code 134 on ISB CM550 DTC coverage. It explains the remote throttle position sensor circuit, possible electrical causes, connector inspections, resistance checks, calibration steps, and final fault-code clearing.
Official Cummins remote throttle sensor document details
| Brand | Cummins |
|---|---|
| Model coverage | ISB CM550 (1990-94) |
| System/Group | DTCs; Remote Throttle Position Sensor Circuit |
| Publication no. | Fault Code 134 |
| Year/Revision | Unknown; copywrite 2017 shown in file extract |
| Pages | 7 |
| File size | 0.4 MB |
| Format | |
| Language | English |
Document table of contents
- FAULT CODE: 134
- PID: P029
- SPN: 29
- FMI: 4
- REMOTE THROTTLE POSITION SENSOR
- Remote Throttle Position Sensor Circuit
- DESCRIPTION
- COMPONENT LOCATION
- TROUBLESHOOTING STEPS
- Step 1A through Step 1C: connector inspection, active code check, and sensor isolation
- Step 2A through Step 2D: sensor pin inspection, potentiometer resistance, +5-VDC supply short-to-ground check, and signal short-to-ground check
- Step 3A through Step 3F: OEM harness and ECM connector inspection, open-circuit checks, ground shorts, and shorts between wires
- Step 4A through Step 4B: disable fault code, cycle the throttle, verify inactive Fault Code 134, and clear inactive fault codes
Applicable truck models
This file applies to Cummins ISB CM550 (1990-94) diagnostic trouble code information where Fault Code 134, PID P029, SPN 29, and FMI 4 are used for the remote throttle position sensor circuit. The extract states that the remote throttle pedal location varies with each OEM and directs the technician to the OEM manual for component location. See the manufacturer at Cummins official website.
Who needs this remote throttle sensor manual
Mechanics, fleet technicians, and workshop owners need this manual when a truck has an active or inactive Fault Code 134 related to the remote throttle position sensor circuit. The checks focus on the OEM harness, ECM connector pins, +5-VDC supply, signal wire, return circuit, sensor resistance, and calibration after sensor replacement or calibration download.
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