Cummins ISB CM850 (2003-06) Fault Code: 134 PID: 29 SPN: 974 FMI: 4 Remote Accelerator Pedal or Lever Position Sensor 1 Circuit – Voltage Below Normal, or Shorted to Low Source. Low voltage detected at remote accelerator pedal position signal.
Cummins ISB CM850 (2003-06) Fault Code: 134 PID: 29 SPN: 974 FMI: 4 Remote Accelerator Pedal or Lever Position Sensor 1 Circuit – Voltage Below Normal, or Shorted to Low Source. Low voltage detected at remote accelerator pedal position signal.
If troubleshooting an intermittent accelerator problem:
The remote accelerator pedal or lever position sensor signal voltage can be monitored with the INSITE? electronic service tool, while flexing the harness to locate the intermittent connection. Intermittent connections will show up as abrupt changes in signal voltage displayed by INSITE?.
Possible causes:
1)Remote accelerator pedal or lever position signal shorted to engine ground or return wires in the OEM harness or sensor.
2)Failed remote accelerator pedal or lever position sensor.
3)Open circuit in the remote accelerator signal, supply, or return wire in the harness or connectors.
NOTE: The three wires in the remote accelerator position sensor circuit must be twisted together.
Possible repairs:
1)Replace the remote accelerator pedal or lever.
2)Replace the OEM harness.
3)Replace the ECM.
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