Upright AB38, Service & Parts Manual

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Troubleshooting
Section
5-4 AB38 Work Platform
5.2 Fault Codes.
The AB38 is equipped with a fault detection system, if
you have a faulty component, bad electrical connection
or start up error a fault code will be displayed on the
read out located on the upper control box.
For fault codes 01 - 39 the following procedure
should be followed.
Ensure that no selector buttons are depressed.
Ensure that the deadman switch on the joystick is not
held.
Ensure that the joystick is in neutral.
Ensure that the steer rocker is not activated.
Ensure that analog rocker is in neutral.
Then re-cycle power, do this by pushing and releasing
the emergency stop button. If the fault code is still
displayed you may have a faulty upper or lower control
box, consult the error code list to identify the problem
component and replace if necessary.
For fault codes 51 - 69 the following procedure
should be followed.
1. Check the fault code list to identify the problem
component.
2. Ensure that the wiring harness is connected, se-
cure, in good condition and fully intact.
3. Ensure that the problem component is receiving
electrical signal, consult the schematics in section 6 of
this manual to identify the ECU output and harness
test points.
4. If no ECU output is present replace the ECU.
5. If ECU output is present but no signal is reaching the
component replace the wiring harness.
6. If signal is reaching the component but the compo-
nent is not functioning replace the component (refer to
section 7 of this manual for part number information).
5.2