Cummins ISL CM850 (2003-06) Fault Code: 551 (NISS) PID: SID 230 SPN: 556 FMI: 4 Accelerator Pedal or Lever Idle Validation Circuit – Voltage Below Normal or Shorted to Low Source. No voltage detected simultaneously on both the idle validation off-idle and on-idle circuits.
Cummins ISL CM850 (2003-06) Fault Code: 551 (NISS) PID: SID 230 SPN: 556 FMI: 4 Accelerator Pedal or Lever Idle Validation Circuit – Voltage Below Normal or Shorted to Low Source. No voltage detected simultaneously on both the idle validation off-idle and on-idle circuits.
1)This fault code is usually caused by a short circuit to ground in the harness, an uncalibrated accelerator pedal or lever assembly, or a miswired idle validation switch.
2)When installing a new accelerator pedal or lever assembly, it must be calibrated before operating the engine. To calibrate, turn the keyswitch to the ON position, and fully depress and release the pedal or lever three times.
Possible repairs:
1)Replace the NISS.
2)Repair or replace the OEM harness.
3)Replace the ECM.
-
Wabco ToolBox plus 13.7 + ECAS CAN2 v3.00 Diagnostics Software
Trucks software $84.00Rated 0 out of 5 -
premium volvo tech tool update 2.8.150 diagnostic software 1pc
Trucks software $150.00Rated 0 out of 5
-
Bobcat Service Library [03.2019] Service, Operator, Maintenance, Bulletines, etc full update
Bobcat $110.00Rated 0 out of 5 -
10 IN 1 FOR CAT SIS Caterpillar 2021 Full Service Dealer INCLUDING CAT 2019 C
CAT $110.00Rated 0 out of 5 -
JOHN DEERE SERVICE ADVISOR 5.3.225 DATABASE AG + CF ENGLISH 2023
John Deere $250.00Rated 0 out of 5
Related products
-
SERVICE MANUAL Eaton Fuller® HD FR/FRO TransmissionsTRSM2400April 2013
TRUCK MANUALSRated 0 out of 5 -
SERVICE MANUAL Carrie Supra 422, 522,622, 722, 822,922, 644,744,844, 944 & Supra Multi-Temp
CARRIE $20.00Rated 0 out of 5 -
MANUAL SERVICE Deutz Combine 5650 H, 5660 HTS5670 H / HTS5680 H, 5690 HTS
DEUTZ $38.00Rated 0 out of 5