Cub Cadet SLTX1000 Series - Manual (Page 154)

LTX Tractors
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• Interpretation: If this ground path is not good, there will probably be other ground-related issues with the
tractor: slow starter motor, slow battery charge, dim lights. All ground connections should be mechanically
secure and corrosion free.
6. Bottom left square-shape: The red wire on the OCR plug carries battery voltage.
• Behavior: With key switch in any of the run positions, D.C. battery voltage should show-up on a volt meter
when the red probe is touched to this terminal and the black probe is grounded.
• Circuitry: This wire draws power from the A1 terminal on the key switch.
• Interpretation: If there is not battery voltage at this terminal, the tractor is probably not functional at all.
Look for a blown fuse or a bad key switch.
7. Bottom left middle square-shape: There is a black wire with a white trace between the red wire and the white
wire. This wire provides the module with input from the park brake switch.
• Behavior: When the brake pedal is depressed and the park brake is set, a ground path is established
through the black wire with a white trace.
• Circuitry: This wire runs to the brake switch, then on to the park brake switch.
• Interpretation: Continuity to ground when the park brake is not set would indicate a short to ground. This
could take the form of a chafed wire contacting ground or a shorted reverse safety switch.
Lack of continuity to ground would indicate:
• A broken or disconnected wire leading to the brake or park brake switches
• A switch that is not closing because of physical damage or corrosion.
• Loss of ground to the park brake switch.
8. Bottom right middle rounded-shape: The white wire provides a ground signal to the RMC module when the
key switch is placed in the REVERSE CAUTION MODE.
• Behavior: There should be continuity to ground at this terminal when the key switch is in the REVERSE
CAUTION MODE position.
• Circuitry: When the key switch is in the REVERSE CAUTION MODE position, a ground path is estab-
lished by connecting terminal A2 to terminal L within the key switch. The white wire from the RMC module
connects to A2, and a green ground wire connects to L.
• Interpretation: If the white wire fails to reach a ground path when the key switch is in the REVERSE
CAUTION MODE position, the RMC module will not arm or operate. Check the key switch for continuity
between A2 and L in the REVERSE CAUTION MODE position, confirm that the green wire connecting to
the L terminal does have good continuity to ground, and check for any loss of continuity in the white wire
that extends from the key switch to the RMC module, including the molded connector between the two
components.
If the RMC plug test indicates fault with any of the safety switches, the next step is to test the suspect switch. The
operation of those switches is described in the following sections.