JLG 601S Operator Manual - Manual (Page 38)

SECTION 3 - MACHINE CONTROLS AND INDICATORS
3-6 – JLG Lift – 3121218
6. Platform Overload (If equipped)
Indicates the platform has been overloaded.
7. EFI System Test Button (Ford Engines S/N 58209 to S/N
60444)
By pushing and holding the system test button on the
side of the ground control box, the Diagnostic Trouble
Codes will be displayed on the Malfunction Indicator
Light. Refer to the Service Manual for instructions con-
cerning the trouble codes and trouble code retrieval.
Figure 3-3. Malfunction Indicator Light and Test Button