Section
6.
Codes and Tests
Toyota Orderpicker Model
7BPUE
15 Service Manual
Traction Power Amplifier Fault Codes
Traction
Power
Am
if ie
An
internal microcontroller automatically
checks the function of the traction power
Fault Codes
amplifier. When this microcontroller detects
a
fault, it signals the appropriate fault code
-- -
through the light emitting diode (LED) on the
front
of the traction amplifier. These are
not
the codes that appear on the operator
display and tractor manager.
Under normal operation, the LED flashes a
single flash at approximately one flash per
second (a
"
heartbeat
"
indicator).
A
two
-
digit
flash code signals the power amplifier has
detected a fault within itself. The code
continues flashing until corrected.
Figure
6-3.
Traction Power Am
p
lifier
TPA Code
LED
Off
Code Title
Reason
System Response
11
P
C
Contactor
I
Open
II
No power or defective amplifier
Amplifier has no power or
is
1)atl. Check cal~le at power
am~~lificr
Systcm shutdown, lowcring cnal~lcd
Alarm Sounds
TPA LED Display
1)
Speed Limit
1
0 mph
11
No
Corrective Actions and Checks
I
How to Clear
Replace or repair bad component
Step
Replace STM
1
2
Troubleshoot
wire from STM
Action/
Meter Setting
00700-CL222-05,
1
5
March 2005
DCV
DCV
(+)
Lead
JPT11-10
51-16
(
-
)
Lead
B-
cable
at TPA
B-
cable
at TPA
Expected Results
B+
B+
Step Passed
Step
2
Replace TPA
Step Failed
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