Cub Cadet BIG COUNTRY 4X2, Service Manual

4 X 2 Gear Selector

29

6.3.

If the fuse is OK, check the relay.                      
See Figure 6.3.

TIP:

  The relay that controls power to the ESM also 

controls power to the fuel shut-off solenoid.  With the 
relay uncovered, a technician should be able to hear 
and feel the relay “click” when the key switch is turned 
on.  This click will confirm that the relay is getting 
power.  If the relay is successfully energizing the circuit 
that contains the ESM, a report click should be heard 
from the fuel shut-off solenoid.  If the relay clicks but 
the fuel shut-off solenoid does not, the relay may be 
bad.  Other possibilities include a fault in the wiring har-
ness downstream of the relay, or a defective fuel shut-
off solenoid.

6.4.

If power is present coming from the relay, check 
for power at the ESM.  If there is no power to the 
ESM, but there is power at the relay, a fault 
exists in the wiring harness. See Figure 6.4.

Figure 6.3

Key to relay
center

removed 

with covers

Relay center

Figure 6.4

Back-probing the harness
at the ESM connection

NOTE: 

Use this basic technique when checking 

any in-puts or out-puts of the ESM.  If power is 
not found at the device that is connected to the 
ESM, check for power where the wire in ques-
tion reaches the ESM.  If the two do not corre-
spond, a the problem lies between them, in the 
harness.

6.5.

If it is established that the 

ESM has power, but 

the gear selector does not respond

 to the but-

tons on the dashboard, check the brake switch. 
See Figure 6.5.

NOTE: 

If the ESM does not know that the brake 

pedal is pressed down, the 

gear selector sys-

tem will not operate

.  The brake switch must be 

properly adjusted as described in the “Brake 
Adjustment” section of this manual.

NOTE: 

The red wires that feed power to the 

gear selector buttons get their power from 
the brake switch. 

NOTE: 

There are two pair of male spade con-

nectors on the back of the brake switch.  Two of 
them lead to a set of contacts that are normally 
open (plunger up).  The other two lead to a set of 
contacts that are normally closed (plunger up).  

The wires should be connected to the termi-
nals that lead to the normally closed con-
tacts. 

 they can be identified by “NC” stamped 

on the male spade terminal. 

NOTE: 

There are two red wires that connect to 

the brake switch.  One is “hot” whenever the key 
switch is turned on.  The second red wire is con-
nected to the first (becoming hot) when the 
brake pedal is depressed. 

Figure 6.5

(normally open) 

Brake switch

Plunger
down:
contacts
closed