JLG 450A_AJ Series II Service Manual - Manual (Page 193)

SECTION 3 - CHASSIS & TURNTABLE
3121290 – JLG Lift – 3-153
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) is enforced and
maximum throttle position is 20%. This is enforced until the
fault is manually cleared.