JLG DVSP Series Service Manual - Manual (Page 137)

SECTION 6 - TROUBLESHOOTING
3121136 – JLG Lift – 6-23
Code 27 - Auxiliary #2 - Disconnected
Check For These Obvious Conditions First:
• Is machine equipped with a component on the Auxiliary #2 circuit.
Code 28 - Reserved
Code 29 - Reserved
Table 6-30. Code 27 - Auxiliary #2 - Disconnected
STEP ACTION SPEC YES NO
1. Is machine equipped with a component on the Auxiliary #2 circuit .
— Go to Step 3 Got to Step 2
2. At the Ground Control Module enter the programming mode, check
if the Auxiliary #2 open circuit detection is enabled.
Default = NO Disable It
Replace Ground
Control Module
3. Check voltage at the P1 connector on the Ground Control Module
between pin-8 and pin-1. Is reading within specification?
2 - 4 V DC
Replace Ground
Control Module
Go to Step 4
4. Remove the wire terminals at the Aux. #2 component, check conti-
nuity of each of the wires from pins-8 and 1 on the P1 connector to
the Aux. #2 component.
—
Replace the
Component Repair or
Replace Wiring