CM850 Electronic Control System – FAULT CODE 2186

Sensor Supply Voltage 4 Circuit – Voltage Below Normal or Shorted to Low Source


Overview

CODE REASON EFFECT
Fault Code: 2186
PID: S232
FMI: 4/4
LAMP: Amber
SRT: 

Sensor Supply Voltage 4 Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at +5 VDC sensor supply circuit to the accelerator pedal position sensor.

Automotive: Engine will only die.

Marine: Severe derate in engine speed. Limp home capability only idle.

Marine: Severe derate in engine speed. Limp home capability only.

Accelerator Pedal or Lever Position Sensor Supply Voltage Circuit
SMALL | MEDIUM | LARGE

Circuit Description

The electronic control module (ECM) supplies the accelerator with +5 VDC. If the supply circuit to the accelerator is damaged, the accelerator will not work correctly.

Component Location

The accelerator pedal or lever is located in the cab. For Marine application, the accelerator lever is typically located in the engine room or at the helm.

Shop Talk

For Marine application, the accelerator lever is typically located in the engine room or at the helm.

Low voltage on the +5 VDC supply line can be caused by a short circuit to ground in the supply line, a short circuit between the supply line and return circuit, a failed accelerator, or a failed ECM power supply.

Refer to Troubleshooting Fault Code t05-2186

Last Modified:  08-Jul-2010