Cub Cadet 1000 SERIES Service Manual page 78

Series 1000 and 1500
MODE position, the white wire carries a ground
signal to the RMC module. When the parking
brake is not set, this ground signal tells arms
(enables), but does not turn-on the RMC mod-
ule.
• Symptom-RMC module will not turn-on: Check
for continuity between A2 and L terminals on the
key switch when it is in the REVERSE CAUTION
MODE position. Confirm that the green wire has
continuity to ground. If the switch is capable of
establishing a ground signal to the RMC module,
the problem is likely to lie elsewhere in the sys-
tem.
• Symptom-RMC module will not turn-on: confirm
that the ground path (continuity to ground) to the
white wire is broken when the key switch is in
any position other than REVERSE CAUTION
MODE.
RMC module is disarmed (disabled) when the
parking brake is set. To re-arm the module, the
key is moved to another position, breaking the
ground signal, then returned to the REVERSE
CAUTION MODE, re-establishing the ground
signal. It works something like a latched relay. If
it is not possible to break the ground-path, it is
not possible to freshly establish it either, and the
RMC module will not be arm-
able.
Causes for such a condition might include a
shorted or incorrect key switch, or a chafed
white wire shorting to ground between the key
switch and the RMC module.
38.8. The RMC Module is in the same housing as the
key switch, and is not available separately. For
the purpose of diagnosis it is treated separately.
Diagnosis in unit with the key switch introduces
too many over-lapping variables. See Figure
38.8.
The
38.9. Principle: To diagnose the module, the simplest
approach is to check all of the inputs (safety cir-
cuits) that are connected to it. If the inputs work
properly, but the RMC module does not work
properly (outputs), then the module can be
determined to be faulty. A specific procedure is
covered, following the description of the correct
operation of the RMC module.
38.10. Working properly: The module cannot be diag-
nosed if its function is not understood. It is
designed to work as follows: See Figure 38.10.
Indicator
74
RMC module
Figure 38.8
Figure 38.10