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JLG boom lifts (450AJ, 600AJ, 800AJ, 460SJ, 660SJ, 860SJ, 1250AJP, M450AJ, M600JP)

JLG error code 685 — ALL FUNCTIONS LOCKED OUT - CONNECTIVITY INTERLOCK

Message on the display: ALL FUNCTIONS LOCKED OUT - CONNECTIVITY INTERLOCK

Code 685 occurs in machines: JLG 1250AJP.

blocking fault

UGM has received a functional interlock or a removal interlock has been set to disable the machine and shutdown the engine. All machine functions disabled and engine start is prevented. If engine is running it is shutdown. Fault is cleared when functional internlock has been cleared or removal interlock is no longer active.

Description from the JLG service manual, in the original wording.

Possible causes

The manual does not list the causes for this code: the service technician establishes them during diagnosis of the machine.

Checks from the manual

  • Verify Connectivity Module is on the correct CANbus (Removal Interlock).

What service does

A qualified service technician reads the code with the manufacturer's diagnostic tools, finds the cause, clears the code and carries out a function test.

Source: JLG Service and Maintenance Manuals: 600AJ (3121201), 800AJ (3120858), 460SJ, 860SJ, 1250AJP (3122581800), M450AJ (3121829), M600JP (3121711), Diagnostic Trouble Codes tables.

The descriptions are quoted from the manufacturer's service documentation and are for guidance only. Clearing codes, calibrations and repairs are carried out by a qualified service technician according to the manual for the specific serial number. A machine with an active blocking code must not be used until the cause has been removed.

Does code 685 not go away?

RK Rental services JLG lifts at our workshop or on site at the customer's premises (construction site, factory, warehouse). We read the code, remove the cause and select the parts by serial number.

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