JLG 20VP (3120728) Service Manual - Manual (Page 83)

SECTION 3 - TROUBLESHOOTING
3120728 – JLG Lift – 3-23
Table 3-13. PHP Limit Switch Circuit
• No ground on PHP circuit at MC-1 box, X105 connector, pin 12, (O/R, 49-1 wire).
• With PHP bars up.
STEP ACTION SPEC YES NO
1. Check for ground on Black wire (direct to ground) on the right side
PHP limit switch. (Continuity to B –)
— Go to Step 2
Repair
Connection
2. Check for ground on O/R, 49-2 wire to left PHP limit switch.
— Go to Step 3
Adjust/Replace
Right Switch
3. Check for ground on O/R, 49-1 wire to MC-1 box, X105 connector,
pin 12.
—
Repair connec-
tion at the X105
connector end
Adjust/Replace
Left Switch