Codes (100 - 199) Ground Control Module - Fault Condition - JLG 15MVL Series Service Maintenance Manual

SECTION 6 - TROUBLESHOOTING

Codes (100 - 199) Ground Control Module - Fault Condition

Check For These Obvious Conditions First:
• That all battery and harness connectors secure and undamaged on Ground Control Module.
• Batteries have sufficient charge.
• Confirm that the static ground strap attached under base frame is secure and undamaged.
Table 6-40. Codes (100 - 199) Ground Control Module - Fault Condition
STEP
1. Recycle machine power 5 times allowing a 10 second interval between
each power recycle. Does fault clear?
2. Which code number is displaying?
3. Confirm that both installed batteries are 12 Volt DC.
4. Check battery voltage while charger is operating. Is voltage within specifi-
cation?
5. Remove the communications cable, P5 connector at the Ground Control
Module and round connector at the Traction Control Module. Check conti-
nuity of all three (3) wires in the communications cable from end to end. P5
- Pins 2, 3, and 4.
6. With communications cable still disconnected at both ends, check for con-
tinuity between Pins 2, 3, and 4 at the P5 connector end.
7. Plug the communications cable on the Traction Control Module to the round
socket on the opposite end of the module. Does this fix problem?
6-36
ACTION
– JLG Lift –
SPEC YES
— Done
Code 103 Go to Step 3
Code 119 Go to Step 5
12V DC Go to Step 4
Maximum of Replace
31 Volts DC Ground Control
Module
— Go to Step 6
— Repair or Replace
Wires
— Done
NO
Go to Step 2
Replace
Ground Control
Module
Replace with proper
Batteries
Repair or Replace
Battery Charger
Repair or Replace
Wire(s)
Go to Step 7
Replace
Ground Control
Module
3121231