JT100/JT100 All Terrain Operator’s Manual Systems and Equipment - 179
Diagnostic Codes
Review Modes
Diagnostic Code Interpretation
Machine diagnostic codes are identified through a series of flashes of the Diagnostic light (red) separated
by pauses of different lengths. The shortest gaps separate flashes that are counted to determine a digit.
Longer pauses separate digits in a code, and the longest pauses separate codes.
Example: “Flash, flash, flash, pause, flash, flash, longer pause” represents code 32.
The Diagnostics Review mode has two methods for identifying and reviewing active machine diagnostics
codes:
1. Individual Review - one code is flashed for each press of the “Set” or “Resume” switch.
2. Continuous Review - each code is flashed three times with the Control Cycle light (green) on during
the first pass of each code and off during the second and third. The list of active codes is repeated
continuously.
To enter Diagnostic Review mode, move the “Drill/Drive” switch to the middle, park position. Press and
hold the “Set” or “Resume” switch to activate the desired method as described below.
Individual Review
1. Press and hold “Set” switch until the Diagnostic light (red) begins to flash (approximately 2 seconds).
IMPORTANT: Do not turn off ignition. Diagnostic codes are cleared each time ignition is turned off.
View All Codes View Codes Individually
1. Ensure that engine is running and no one is
sitting in operator’s seat.
2. Press and hold the resume button for two
seconds.
3. Diagnostic light will flash code 12 (flash,
pause, flash, flash, longer pause) to indicate
review mode is operational.
4. After flashing code 12, all diagnostic codes
detected since the last time the ignition was
turned on are flashed three times each.
5. To save diagnostic codes, continue normal
operation. Do not turn ignition off.
6. Once the problem has been corrected, clear
all codes by turning ignition off.
1. Ensure that engine is running and no one is
sitting in operator’s seat.
2. Press and hold the set button for two
seconds.
3. Diagnostic light will flash code 12 (flash,
pause, flash, flash, longer pause) to indicate
review mode is operational.
4. After code 12 is flashed, press set button to
see first code.
• Press resume to see same code again or
press set to see next code.
• Continue pressing set until all diagnostic
codes detected since the last time the
ignition was turned on are flashed.
5. To save diagnostic codes, continue normal
operation. Do not turn ignition off.
6. Once the problem has been corrected, clear
all codes by turning ignition off.
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