SPN 1043 - FMI 3 (Fault Code 387)
Tuesday, August 07, 2018
Fault Codes CUMMINS ISB ISBe QSB4.5 QSB5.9 QSB6.7 ISC QSC8.3 ISL ISLe QSL9 CM850 (CM2850)
SPN1087 FMI3
Accelerator Pedal or Lever Position Sensor Supply Voltage Circuit - Voltage Above Normal or Shorted to High Source
CODES:
Fault Code: 387
PID(P), SID(S): S221
SPN: 1043
FMI: 3/3
Lamp: Amber
REASON: Accelerator Pedal or Lever Position Sensor Supply Voltage Circuit - Voltage Above Normal or Shorted to High Source. High voltage detected at sensor supply circuit for the accelerator pedal or lever position sensor.
EFFECT: Automotive and marine applications: Engine will only idle.
Circuit Description:
The electronic control module (ECM) supplies the accelerator pedal or lever position sensor with +5 volts.
Component Location:
The accelerator pedal or lever assembly is located in the cab. For marine applications, the accelerator lever assembly is typically located in the engine compartment or helm.
Shop Talk:
This fault is logged when the ECM senses more than +5.25 volts on the accelerator pedal or lever position +5 volt supply line. This can be caused by a short circuit to a voltage source in the OEM harness or a short circuit to an actuator signal circuit that is greater than +5 volts.
Read More:
SPN 629 - FMI 12 (Fault Code 343)
SPN 627 - FMI 12 (Fault Code 351)
Blog.Teknisi
Accelerator Pedal or Lever Position Sensor Supply Voltage Circuit - Voltage Above Normal or Shorted to High Source
 |
| Accelerator Pedal or Lever Position Sensor Supply Voltage Circuit |
CODES:
Fault Code: 387
PID(P), SID(S): S221
SPN: 1043
FMI: 3/3
Lamp: Amber
REASON: Accelerator Pedal or Lever Position Sensor Supply Voltage Circuit - Voltage Above Normal or Shorted to High Source. High voltage detected at sensor supply circuit for the accelerator pedal or lever position sensor.
EFFECT: Automotive and marine applications: Engine will only idle.
Circuit Description:
The electronic control module (ECM) supplies the accelerator pedal or lever position sensor with +5 volts.
Component Location:
The accelerator pedal or lever assembly is located in the cab. For marine applications, the accelerator lever assembly is typically located in the engine compartment or helm.
Shop Talk:
This fault is logged when the ECM senses more than +5.25 volts on the accelerator pedal or lever position +5 volt supply line. This can be caused by a short circuit to a voltage source in the OEM harness or a short circuit to an actuator signal circuit that is greater than +5 volts.
Read More:
SPN 629 - FMI 12 (Fault Code 343)
SPN 627 - FMI 12 (Fault Code 351)
Blog.Teknisi
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