JLG ES series scissor lifts (1930ES, 2030ES, 2630ES, 2646ES, 3246ES)
JLG error code 662 — CANBUS FAILURE - PLATFORM MODULE
Message on the display: CANBUS FAILURE - PLATFORM MODULE
Code 662 occurs in machines: JLG ES series, 4045R, R4045.
blocking fault
In platform mode, the control system failed to receive messages from the platform board.
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
- Turn on machine in ground mode. If DTC 661 is not present check for 24V between platform box connector terminals D and A. If not 24V, test continuity from platform box connector socket A to ground board connector socket J1-6 and test continuity from platform box connector socket D to ground board connector socket J1-7.
- If DTC 661 was present in the previous check, disconnect armstack passthru connector located near the ladder on the left. Turn on in ground mode. If DTC 661 is not present then there is a problem in armstack harness. Armstack passthru socket 5 to platform box terminal E should have continuity. Armstack passthru socket 6 to platform box connector terminal F should have continuity. Armstack passthru socket 7 to platform box connector terminal G should have continuity. Armstack passthru socket 5 to armstack passthru socket 6 resistance should be 120 Ohms +/- 5%. Armstack passthru socket 5 to armstack passthru socket 7 should measure open circuit. Armstack passthru socket 6 to armstack passthru socket 7 should measure open circuit.
- Disconnect armstack passthru and ground board J1. Armstack passthru pin 5 to ground board socket J1-11 should have continuity. Armstack passthru pin 6 to ground board socket J1-12 should have continuity. Armstack passthru pin 7 to ground board socket J1-13 should have continuity. Armstack passthru pin 5 to armstack passthru pin 6 should measure open circuit. Armstack passthru pin 5 to armstack passthru pin 7 should measure open cir
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 Manual, ES series (Diagnostic Trouble Codes section).
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 662 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.