Curtis 1207B Manual
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2 9 J U N E 2 0 1 2
D R A F T
PROGRAMMER DIAGNOSTICS
With a programmer, diagnostics and troubleshooting is more direct than with
the LED alone. The programmer presents complete diagnostic information in
plain language—no codes to decipher. Faults are displayed in the Fault menu,
and the status of the controller inputs/outputs is displayed in the Monitor
menu.
The following 4-step process is generally used for diagnosing and troubleshoot-
ing an inoperative vehicle: (1) visually inspect the vehicle for obvious problems;
(2) diagnose the problem, using the programmer; (3) test the circuitry with
the programmer; and (4) correct the problem. Repeat the last three steps as
necessary until the vehicle is operational.
Example:
A vehicle that does not operate in “forward” is brought
in for repair.
step
1: Examine the vehicle and its wiring for any obvious
problems, such as broken wires or loose connections.
step
2: Connect the programmer, enter System Faults menu
(Fault » System Faults), and read the displayed fault information.
In this example, the display shows “Currently no faults,” indicat-
ing the controller has not detected anything out of the norm.
step
3: Enter the Monitor menu, and observe the status of the
inputs and outputs in the forward direction. In this example,
the display shows that the forward switch did not close when
“forward” was selected, which means the problem is either in
the forward switch or the switch wiring.
step
4: Check or replace the forward switch and wiring and
repeat the test. If the programmer shows the forward switch
closing and the vehicle now drives normally, the problem has
been corrected.
Refer to the troubleshooting chart (Table 2) for suggestions covering a wide
range of possible faults.
5 — DIAGNOSTICS & TROUBLESHOOTING
