Shift Fault Codes - Cub Cadet 435A Operator's Manual

9
ELECTRONIC
SHIFT MODULE
Fault Code List
WARNING
If the vehicle is shut
off under a fault
condition, before
the vehicle will start
again the Neutral
Sensor must function
properly AND the
vehicle will have to be
manually shifted into
"NEUTRAL".
ELECTRONIC SHIFT MODULE – FAULT CODE LIST
If your unit does not shift properly, the ESM will let you know there is a problem using the following table of fault
codes. Once you select a gear, the instrument panel will illuminate a gear light, or a combination of gear lights.
These lights can be used to determine if the vehicle shifted properly, or if there is a shifting issue. The letter on the
far left represents the gear the vehicle was in prior to shifting:
To determine the failure mode, it is necessary to remember the original state of the transmission gear, the gear that
was selected, and the state of the indicator lights.
Gear Selected
R Light Code
Fault Code
Gear Selected
F Light Code
Fault Code
Gear Selected
N Light Code
Fault Code
* - Indicates the lights will flash for 5 seconds and an audible tone will sound. During that time a shift will not be
allowed by the ESM. Once the lights stop flashing the ESM will allow for shifting.
Example – The vehicle was in reverse (look at row starting with "R"). The gear selected was forward (look at "F"
in "Gear Selected" row). The "Light Code" flashed on the instrument panel is "RF", which corresponds with "Fault
code 3". Looking up "code 3" in the "Fault Codes Defined" section will list the potential problems. If the solution is not
obvious, contact your dealer for service.
ESM – Electronic Shift Module
• Neutral Sensor – in the neutral position the sensor is normally closed (NC).
• Shifting Wedge – this is a wedge shaped mechanical part that actuates the Neutral Sensor depending on
the gear selected. The void portion of the wedge is neutral.
• Closed Circuit Failure – the Neutral Sensor will stay in the NC, neutral state when engaged in forward/re
verse. This will occur if the shifting wedge is not contacting the Neutral Sensor properly.
• Open Circuit Failure – the Neutral Sensor will stay in the NO, non-neutral state even when it passes
through the void in the shifting wedge. This will occur if the ball actuator of the sensor is stuck inside the
sensor housing or if the wires leading to the sensor are cut/disconnected.
N
N FN*
None 2
N
N RN*
None 1
R
R RN*
None 1
Terms and Definitions
18
F
FNR* F
4 None
F
FNR* R
4 None
F
F FN*
None 2
RF*
3
RF*
3