Harmar Mobility AL425 Axis II - Troubleshooting; Problem, Cause, Solution

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26
INSTALLER
CIRCUIT
BREAKER
20 A
SELF
RESTING
BATTERY
12 V
SHOP BATTERY
APPLY KNOWN GOOD POWER
DIRECTTO MOTOR
APPLY KNOWNGOOD
POWERDIRECT
TO PLUGONLIFT
OPERATE HAND
CONTROLLER
APPLY KNOWNGOOD
POWERDIRECT
THRU VEHICLE HARNESS
OPERATE HAND
CONTROLLER
DID
MOTOR
RUN
?
DID
MOTOR
RUN
?
DID
MOTOR
RUN
?
YES
YES
YES
NO
NO
NO
REPLACE
MOTOR
INSPECT /
REPLACE
LIFT WIRING
INSPECT or
REPLACE
VEHICLE
HARNESS
SHOP BATTERY
BA
TTERY
12 V
WIRING IN LIFT
WIRING IN LIFT
COM
N
C
COM
N
C
O
U
T
O
U
T
I
N
I
N
+
A
A
A
A
B
B
B
A
B
B
C
D
E
F
G
R
EE
N
GREEN
R
E
D
R
E
D
R
ED
R
ED
RED
RED
YE
LL
O
W
Y
E
LLO
W
W
HI
T
E
WHITE
BLA
C
K
B
LACK
B
L
A
C
K
BROWN
BROWN
_
SHO
P BATTER Y
BAT
TE
R Y
1
2 V
REPLACE
VEHICLE
BATTERY
Figure 32-2
TROUBLESHOOTING
The following procedures are reserved for the
approved installer/dealer. They should not be
attempted by anyone without proper knowledge of
automotive electrical circuitry.
Problem
Lift does not operate or lift operates slowly or
intermittently.
Cause
Bad electrical connection(s) / Circuit breaker
Solutions
• Check / clean all connections that might be loose
or dirty. The lift's motor requires quality electrical
connections to operate at full capacity; any break
in the wiring will slow down the motor and it will
deteriorate prematurely.
• Inspect the full length of the wiring harness to
ensure the insulation is not torn. The lift’s vehicle
power harness running through or under the
vehicle is subject to road debris and rubbing
against the vehicle’s frame which can cause a
short.
• Verify the circuit breaker. The circuit breaker is
located about 6” from the connections to the
vehicle’s battery. The breaker will self-reset if
overloaded; however, verify (with Ohm meter
or test light) that the breaker is functioning. Or
replace it with a new/known-good circuit breaker
and perform the tests shown in Figure 26-1.
_____________________________________
Problem
Lifting strap operates in reverse
Cause
Button was held too long and unwound the lifting
strap like a yo-yo. The lifting strap wound in reverse.
Solutions
Press the button that extends the strap and continue
to hold until the strap returns to the proper direction.
Strap should always wrap over the top of the spool.
[Figure 26-2]
TROUBLE SHOOTING
Figure 26-1
Figure 26-2