JLG 460SJ Service Manual - Manual (Page 217)

SECTION 3 - CHASSIS & TURNTABLE
3120895 – JLG Lift – 3-165
DTC 219- RPM Higher Than Max Allowed
Governed Speed
• Max Govern Speed Override- Crankshaft Position Sen-
sor
• Check Condition-Engine Running
• Fault Condition-Engine speed greater than the max
governor override speed as defined in the diagnostic
calibration
• Corrective Action(s): Sound audible warning or illumi-
nate secondary warning lamp, reduce throttle to limit
speed. Recommend closed loop and adaptive learn
fueling correction remains active during fault.
• Non-emissions related fault
This fault will set anytime the engine RPM exceeds the
limit set in the diagnostic calibration for the latch time or
more. This speed overrides any higher max governor
speeds programmed by the user. This fault is designed to
help prevent engine or equipment damage.
The throttle will be lowered in order to govern the engine
to the speed set in the diagnostic calibration.
DTC 219- RPM Higher Than Max Allowed Governed
Speed (continued)
Diagnostic Aids
NOTE: If any other DTCs are present, diagnose those first.
• Ensure that no programmed governor speeds exceed
the limit set in the diagnostic calibration for Max Gov
Override Speed
• Check mechanical operation of the throttle actuator
Electronic Throttle
Actuator w/Serial
Position Feedback
2
16
13
12
1
5V_ext
Vs=+5 VDC
5V_rtn
TPS1
TPS SER +
+
-
Motor
DBW-
DBW+
ECM
H-Bridge
19
TPS SER -
Serial
xmitter