86 GTH-4016SR • GTH-4018SR Part No. 57.4400.9203
March 2010
Section 6 • Troubleshooting
REV A
TROUBLESHOOTING
How to Troubleshoot the
Mechanical Gear
1. Check if the gear selector is in neutral position.
2. Check fuse F14-10A integrity.
3. Check the mechanical gear selector connector
S14.
4. Check connector X16 pin 6 and pin 7 (fuses
board) for verifing K5 relay.
5. Check connector X162 (speed sensor B162): if
it’s disconnected the main unit doesn’t allowed
shifting.
6. Check pin 13 of the connector X16 (speed
sensor input), placed in the fuses board.
7. If all listed above is confirmed, replace the shift
control unit K24, otherwise:
• V
erify there are 12V on one of the two
shifting valve connectors: X131 (first gear)
and X132 (second gear).
8. If all listed above is confirmed, check the
hydraulic system. Keep particular attention
for the overcharged pressure which must be
about 25 bar.
How to Troubleshoot the Jobsite
Position
1. Check if the Jobsite/Road/Platform selector is
in Jobsite position.
2. Check fuse F13-10A integrity.
3. Check if there are 12V on connector X231/3
(steering selection); if not, verify connector
X180.2; if not, verify connector X180.1. If not,
replace the connector.
4. Verify there are 12V on pin 41 or pin 42 of the
connectors X934 (main control unit), placed
behind the seat.
5. If not, verify there are 12V on pin 24 or pin 25.
If not,
the problem comes from the Software
and/or Hardware. Contact Genie Service.
6. If all listed above is confirmed, check pin 24
and pin 23 of the connector X130
7. If all listed above is confirmed, verify that,
according to the selected steering mode, there
are 12V on one of the two valve connectors:
EV137 and EV138.
8. If all listed above is confirmed, check the
hydraulic system.