Cummins ISB CM550 (1990-94) Fault Code: 489 PID: 191 SPN: 191 FMI: 0 Auxiliary Speed or Auxiliary Pressure Input Error
Circuit Description
The auxiliary speed input is a frequency signal from an auxiliary speed or pressure pickup. It is
sent to the electronic control module (ECM) and is used to control the engine speed. Auxiliary
reference speed is based on the throttle position.
Component Location
The auxiliary speed or pressure pickup device location is dependent on the original equipment
manufacturer’s (OEM) application. Refer to OEM manual for component location.
Shop Talk
The auxiliary speed governor controls engine speed based on a measured auxiliary speed or
pressure. The auxiliary speed governor feature must be enabled in the calibration and set
properly for speed or pressure, depending on the OEM application.
![Volvo Penta EPC 6 Offline VMware [12.2021] VMware](https://i0.wp.com/www.ecuforcetruck.com/wp-content/uploads/2022/11/VOLVO-PENTA-2021-A.jpg?resize=300%2C300&ssl=1)
Related products
-
Allison 1000 & 2000 Gen 4 Fault Codes: U1000 Class 2 Loss of Serial Data Communication
1000 & 2000 Gen 4 $50.00 -
-
-
-
-
Bendix ABS EC-30 Fault Code: SID 251 FMI 3
Bendix ABS -
-
Allison 1000 & 2000 Gen 4 Fault Codes: P1779 Engine Torque Delivered To TCM Signal
1000 & 2000 Gen 4 $50.00 -
-
Allison 1000 & 2000 Gen 4 Fault Codes: P0870 Transmission Pressure Switch Solenoid E Circuit
1000 & 2000 Gen 4 $50.00 -
Allison 1000 & 2000 Gen 4 Fault Codes: U1300 J1850 (Class 2) Serial Data Communication Link Low
1000 & 2000 Gen 4 $50.00 -
Allison 1000 & 2000 Gen 4 Fault Codes: P0876 Transmission Reverse Pressure Switch Circuit Stuck Open
1000 & 2000 Gen 4 $50.00 -
-
-
Allison 1000 & 2000 Gen 4 Fault Codes: U0032 J1850 (Class 2) Serial Data Communication Link High
1000 & 2000 Gen 4 $50.00
