Cub Cadet SLTX1000 Series - Manual (Page 149)

Electrical System
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• Symptom: Crank, spark, but no fuel: First check the fuel tank to verify that there is fuel in it. If there is fuel
in the fuel tank, test for power at the afterfire solenoid. If there is no power there, then check for continuity
from B to A1 in the START position. If power is reaching the red wire that connects to the A1 terminal in
the start position, the problem lies down stream of the key switch. A handy quick-check is to apply power
to the red wires where they connect to the S terminal (whole circuit) or directly to the afterfire solenoid to
listen for the audible “click” that it makes when functioning.
• Symptom: Crank, but no spark: This is a highly unlikely scenario. If it occurs after a key switch has been
changed independently of the RMC module, this would arouse suspicion that the wrong key switch was
installed. Otherwise, the problem lies elsewhere in the safety circuits or engine. Do not over look the pos-
sibility of a bad magneto or chafed ground lead within the engine harness.
3. In the NORMAL RUN position (green zone), the B and A1 terminals should have continuity. Once the engine
is running, the alternator produces current that tracks back to charge the battery, via the red wire connected to
the B terminal.
• Symptom: Battery does not charge: Follow the engine manufacturer’s recommendations for testing alter-
nator output. If alternator output is getting to and through the key switch, but not reaching the battery, the
fuse may have blown after start-up. A blown fuse will disable the starter circuit. A simple quick-test for the
presence of alternator output at the battery is to check across the battery posts for DC voltage.
• Symptom: afterfire solenoid does not work: engine starts and dies: The afterfire solenoid is powered
directly by the red wire with a white trace from the A1 terminal of the key switch, and should operate inde-
pendently of anything else on the mower once the engine is running. If the alternator fails and battery
power is not reaching the afterfire solenoid through the key switch, it will not work. This is an unusual set
of circumstances.
4. In the REVERSE CAUTION MODE (yellow zone), the same characteristics are true as for the normal run posi-
tion, but in addition the L terminal will have continuity with the A2 terminal. The A2 terminal is connected to the
RMC module by a purple wire (electric PTO) or a white wire (manual PTO). The L terminal (formerly used for
the lighting circuit) connects directly to the ground circuit of green wires. When the key is in the REVERSE
CAUTION MODE position, the purple or white wire carries a ground signal to the RMC module. When the seat
is occupied, this ground signal arms (enables), but does not turn on the RMC module.
• 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 system.
• Symptom: RMC module will not turn on: confirm that the ground path (continuity to ground) to the purple
or white wire is broken when the key switch is in any position other than REVERSE CAUTION MODE.
• The RMC module is disarmed (disabled) when the seat is empty. 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
armable.
• Causes for such a condition might include a shorted or incorrect key switch, or a chafed purple or white
wire shorting to ground between the key switch and the RMC module.