JLG 450A_AJ Series II Service Manual - Manual (Page 247)

SECTION 3 - CHASSIS & TURNTABLE
3121180 – JLG Lift – 3-197
DTC 1614- Microprocessor Failure - RTI 3
• Engine Control Module
• Check Condition- Key on
• Fault Condition- Internal microprocessor error
• MIL- On until code is cleared by technician
• Adaptive- Disabled for the remainder of the key-on
cycle
• Closed Loop- Enabled
• Power Derate (level 2 until fault is cleared manually)
The ECM has checks that must be satisfied each time an
instruction is executed. Several different things happen
within the microprocessor that causes this fault. The ECM
will reset itself in the event this fault is set, and MIL will be
on until the code is cleared. This fault should be erased
after diagnosis by removing battery power. It will not self-
erase.
During this active fault, Power Derate (level 2) will be
enforced. When this is enforced, maximum throttle posi-
tion will be 20%. This is enforced until the fault is manually
cleared.