JLG DVSP Series Service Manual - Manual (Page 128)

SECTION 6 - TROUBLESHOOTING
6-14 – JLG Lift – 3121136
Code 04 - Tilt Condition
Check For These Obvious Conditions First:
• If machine is on a tilt of more than 1.5° in either or both the X or Y direction, this is normal operation.
(DRIVE and LIFT UP are disabled when tilt is detected)
• Check if Ground Control Module is mounted securely to the mast support column.
Code 05 - Reserved
Code 06 - Reserved
Code 07- Left Drive Motor - Disconnected
Check For These Obvious Conditions First:
• Check left drive motor M1 connector at the Traction Control Module for secure and proper connection.
Table 6-9. Code 04 - Tilt Condition
STEP ACTION SPEC YES NO
1. Using a digital level check the actual level of the machines’ resting
surface in both the X and the Y directions. Does surface check within
machine specification.
1.5°
X and Y Direction
Go to Step 2
Drive Machine to
Level Surface
2. At the Ground Control Module, enter the programming mode (See
Ground Control Programming, Section-3 of Service Manual) and
check the tilt sensor X and Y readings. Are readings within machine
specification?
1.5°
X and Y Direction
Replace Ground
Control Module
Go to Step 3
3. Zero Tilt Sensor on a surface checked to within 0.0 degrees with a
digital level in both the X and Y directions. (See Ground Control Pro-
gramming, Section-3 of Service Manual).
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NOTE: If frequent calibration of the internal Tilt Sensor is required, replace the Ground Control Module.
Table 6-10. Code 07 - Left Drive Motor - Disconnected
STEP ACTION SPEC YES NO
1. Check resistance across positive (+) and negative (–) drive motor
leads in M1 connector wiring harness going to the left drive motor. Is
reading within spec?
.1 to .3 ohms
Replace Traction
Module
Go to Step 2
2. Repair or replace left drive motor wiring, brushes or motor.
(For brush replacement, see Section 3 of this Service Manual)
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