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SECTION 2 - OPERATION
2-88
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 andaudible alarm in theevent 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 MPHor
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.
Figure 2-118
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 MPHor
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 2-119