Code 19 - alarm - disconnected, Code 20 - beacon - short circuit, Code 19 - alarm - disconnected -26 – JLG 15/20MSP Service Manual User Manual
Page 146: Code 20 - beacon - short circuit -26, See table 6-23, Ge 6-26, See table 6-24, 26 code 20 - beacon - short circuit
SECTION 6 - TROUBLESHOOTING
6-26
– JLG Lift –
3121231
Code 19 - Alarm - Disconnected
Check For These Obvious Conditions First:
• Damaged wiring in the alarm wiring harness or a damaged alarm.
• Activate a function to check if alarm beeps.
Code 20 - Beacon - Short Circuit
Check For These Obvious Conditions First:
• Damaged wiring in the beacon wiring harness or a damaged beacon unit.
Table 6-23. Code 19 - Alarm - Disconnected
STEP
ACTION
SPEC
YES
NO
1.
Check voltage at the P1 connector on the Ground Control Module between
pin-13 and pin-6. Is reading within specification?
2 - 4V DC
Replace Ground
Control Module
Go to Step 2
2.
Remove the wire terminals at the alarm, check continuity of each of the
wires from pins 13 and 6 on the P1 connector to the alarm end.
—
Replace the Alarm
Repair or
Replace Wiring
Table 6-24. Code 20 - Beacon - Short Circuit
STEP
ACTION
SPEC
YES
NO
1.
At the Ground Control Module, P1 connector, check the voltage across
pins-12 and 5 to the beacon. Is reading within specification?
0 - 2V DC
Go to Step 2
Replace Ground
Control Module
2.
Remove the wire terminals at the beacon, check continuity of each of the
wires from pins 12 and 5 on the P1 connector to the beacon end.
—
Replace the
Beacon
Repair or
Replace Wiring