Troubleshooting Charts - prime mover smx45 Master Service Manual

Possible Cause
Bad ETAC (A2)
Bad lift pump contactor
Bad wiring continuity or wiring
shorts
Bad lift-limit switch
Bad lift pump motor brushes
Bad lift pump motor
Bad pump
Possible Cause
Battery problems
Mechanical binding in lift
mechanism
© BT Prime-Mover, Inc.
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3.2. Troubleshooting Charts

The following troubleshooting charts describe a course of
testing and repair for each problem listed. If the given test is
NOT successful, perform the repair listed with the test. If the
given test IS successful, go to the next test or follow the
special instructions given. For electrical legend see
page 196.
1. No lift, lift motor does not run, travel is okay.
With main ON/OFF switch in the ON position, the pin key code entered
in the keypad, the green ON button
lift switch depressed, does main contactor (K10) and pump contactor
(K30) energize (click)? If not, check
no signal is detected, check mechanical problems in the steering
control head. Replace electronic tiller arm card ETAC (A2) as a last
alternative in resolving problem.
With main ON/OFF switch in the ON position, the pin key code entered
in the keypad, the green ON button
lift switch depressed, does main contactor (K10) and pump contactor
(K30) energize (click)? If not, measure voltage between pump contactor
coil terminals. If B+ voltage is present, replace the pump contactor.
With main ON/OFF switch OFF and battery connector disconnected,
check for continuity and wiring shorts in wiring harness or cables.
With main ON/OFF switch OFF, battery connector disconnected, and
forks lowered, check continuity through the lift-limit switch. Replace if
necessary.
With main ON/OFF switch in the ON position, the pin key code entered
in the keypad, the green ON button
lift switch depressed, does pump contactor (K30) energize (click)? If
yes, measure voltage between B- and lift pump motor terminal. If okay,
check lift motor brushes (see
If lift motor brushes are okay, test pump motor.
If motor is okay, remove motor from the pump and rotate pump shaft by
hand. Replace pump if not okay.
2. No lift or slow lift, lift motor does run.
Replace battery with fully-charged battery.
Repair lift mechanism.
Master Service Manual 2006-08-08
F-code Section
PT S6.0
Hydraulic System
Version no T-code
001 SMX
Remedy
"I"
pressed on the keypad, and the
"Service Display" on page
"I"
pressed on the keypad, and the
"I"
pressed on the keypad, and the
page 91.)
Remedy
C-code
6000
169. If
261