ISB/ISBe Series Engines – PTO or Cruise Control Does Not Operate

Programmable parameters or selected features are not correct

Check the programmable parameters and the selected features with an electronic service tool. Set the parameters and features again if necessary. Refer to Procedure
019-078.

Electronic control module (ECM) calibration is malfunctioning

Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history for applicable fixes to the calibration stored in the ECM. Refer to the calibration history spreadsheet Click here to see ecm_calibration_rev_history.xls

on QuickServe® Online Internet Website or the INCAL™ calibration CD. Compare the calibration stored in the ECM with the engine rating and the Control Parts List (CPL), Bulletin 4021326 or 4021327. If necessary, recalibrate the ECM. Refer to the appropriate electronic service tool manual and Procedure
019-032.

Vehicle speed sensor (VSS) or circuit is malfunctioning

Use an electronic service tool to monitor the vehicle speed while the vehicle is not moving. Refer to the appropriate electronic service tool manual. If the monitor shows speed, check the sensor and circuit. Refer to Procedure
019-090 and
019-091.

Clutch switch or circuit is malfunctioning

Check the clutch switch adjustment, switch, and circuit. Refer to Procedure
019-009 or
019-010.

Vehicle brake switch or circuit is malfunctioning

Check the vehicle brake switch and circuit. Refer to Procedure
019-088 and
019-089.

Cruise control/PTO on/off switch or circuit is malfunctioning

Check the cruise control/PTO on/off switch and the circuit. Refer to Procedure
019-021 and
019-022.

Cruise control/PTO selector switch or circuit is malfunctioning

Check the cruise control/PTO selector switch and circuit. Refer to Procedure
019-023 and
019-024.