Buhler 2425, 2335, 2290, 2375, 2360 manual Transmission Speed Sensor Failures

SECTION 2 - OPERATION

Transmission Speed Sensor Failures

The Electronic Instrument Control System will notify the operator that the transmission speed sensor or the wiring to the sensor has an open or short circuit. See “Electrical Troubleshooting” in Section 4 for the proper steps to follow to find a possible open or short circuit. The following description details the reaction of the electronic monitor and audible alarm in the event of an open or short in the transmission speed sensor circuit.

When the ignition is in the “RUN” position and an open circuit is detected, the lower portion of the monitor will flash “OPEN” and display the MPH or km/h symbol. The audible alarm will sound continuously. This will happen no matter what position the rotary select switch is in. The upper portion of the monitor will continue to display engine RPM.

If the operator presses the acknowledge/reset button, the audible alarm will turn off and the lower portion of the monitor will display “OPEN” steadily. If the ignition is turned to the “OFF” position and then turned back to the “RUN” position, the process will repeat itself until the open circuit is corrected.

When the ignition is in the “RUN” position and a short circuit is detected, the lower portion of the monitor will flash “SHCR” and display the MPH or km/h symbol. The audible alarm will sound continuously. The upper portion of the monitor will continue to display engine RPM.

If the operator presses the acknowledge/reset button, the audible alarm will turn off and the lower portion of the monitor will display the word “SHCR” steadily. If the ignition is turned to the “OFF” position and then turned back to the “RUN” position, the process will repeat itself until the short circuit is corrected.

Figure 2-118

Figure 2-119

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