Cub Cadet RZT-S Zero Electric User Manual
Page 95
Electrical System
91
Brake switch
The brake switch receives 4 - 5 volts through a red
wire with a white trace. A brown wire with a white trace
carries the voltage from the N.O. contact of the brake
switch to pin 1 of the VCM’s 16 pin connector.
If there is a brake switch fault:
1.
Remove the VCM by following the procedures
described in the Vehicle Control Module (VCM) sec-
tion of this chapter.
2.
Install the harness break out adapters.
See Figure 5.65.
3.
Set the parking brake
4.
Turn the key switch to the “ON” position
5.
Measure the voltage from pin 7 (- probe) of the 12
pin connector to pin 8 of the 16 pin connector.
6.
Measure the voltage from pin 7 of the 12 pin con-
nector to pin 1 of the 16 pin connector.
•
If the DMM reads 4 - 5 volts, at all three locations the VCM is faulty.
•
If the DMM reads 0 volts at pin 8, the VCM is faulty.
•
If the DMM reads 0 volts at pin 1, continue on to step 7.
7.
Remove the floor pan by following the procedures
described in Chapter 2: Body.
NOTE: Do not disconnect the battery pack while
removing the floor pan.
8.
Inspect the brake switch connection.
9.
Set the parking brake.
10.
Place the negative probe of the DMM in the socket
of pin 7 on the 12 pin breakout adapter.
11.
While watching the DMM, back probe the red wire
with a white trace at the brake switch.
See Figure 5.66.
•
If the reading is 4 - 5 volts, the VCM’s signal is
reaching the switch.
•
If the reading is 0 volts, the harness is faulty.
12.
While watching the DMM, back probe the brown wire with a white trace at the brake switch.
•
If the reading is 4 - 5 volts, the switch is functional. The fault is in the harness.
•
If the reading is 0 volts, the switch is faulty or the brown wire with a white trace is connected to the N.C.
side of the switch.
13.
With the probe still on the brown wire with a white trace, release the parking brake.
•
If the reading is 4 - 5 volts, the brown wire with a white trace is connected to the N.C. side of the switch.
•
If the reading is 0 volts, the switch is faulty.
Figure 5.65
Pin 7
Pin 1
Figure 5.66
Brake switch