JLG SSV10 Service Manual - Manual (Page 112)

SECTION 6 - TROUBLESHOOTING
6-20 – JLG Lift – 3121187
Code 23 - Horn - Disconnected
Check For These Obvious Conditions First:
• Is machine equipped with a horn unit.
Code 24 - Auxiliary #1 Circuit - Short Circuit
Check For These Obvious Conditions First:
• Damaged wiring in the Auxiliary #1 Component wiring harness or a damaged Component.
Table 6-24. Code 23 - Horn - Disconnected
STEP ACTION SPEC YES NO
1. Is machine equipped with a horn unit.
— Go to Step 3 Got to Step 2
2. At the Ground Control Module enter the programming mode, check
if the horn open circuit detection is enabled. — Disable It
Replace Ground
Control Module
3. Check voltage at the P1 connector on the Ground Control Module
between pin-14 and pin-7. Is reading within specification? 2 - 4 V DC
Replace Ground
Control Module
Go to Step 4
4. Remove the wire terminals at the horn, check continuity of each of
the wires from pins-14 and 7 on the P1 connector to the horn end. —
Replace the
Horn
Repair or
Replace Wiring
Table 6-25. Code 24 - Auxiliary #1 Circuit - Short Circuit
STEP ACTION SPEC YES NO
1. At the Ground Control Module, P1 connector, check the voltage
across pins-9 and 2 to the Aux. #1 component. Is reading within
specification?
0 - 2V DC Go to Step 2
Replace Ground
Control Module
2. Remove the wire terminals at the Aux. #1 component, check conti-
nuity of each of the wires from pins-9 and 2 on the P1 connector to
the Aux. #2 component end.
—
Replace the
Component Repair or
Replace Wiring