Cub Cadet RZT-S Zero Electric - Manual (Page 80)

RZT-S Zero
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• The VCM has lost communication with the steering sensor.
• The VCM cannot understand the signal it is getting from the steering sensor.
• The steering sensor jumps from one end of its scale to the other.
To troubleshoot the steering sensor:
1. Turn the ignition key to the “OFF” position.
2. Depress the mow in reverse and headlight buttons
with one hand while turning the ignition key to the
“ON” position with the other. This will bring up the
steering calibration screen.
NOTE: If the left value is higher than the right, the
steering sensor is jumping from one end of
the scale to the other. This happens
because the magnet is not properly aligned
or the sensor is calibrated backwards.
See Figure 5.37.
NOTE: If the sensor reads “0”, the VCM can not see
the sensor because it is either disconnected,
the sensor can not sense the magnet or the
harness is damaged. To determine which:
• Remove the floor pan enough to gain access to
the steering sensor connector.
NOTE: If the steering sensor is disconnected, plug
the sensor in and check and see if the VCM
can see the sensor now. If it was connected:
• Disconnect the steering sensor.
• Set a DMM to read DC voltage.
• Measure the voltage across pins 1 and 2 of the
harness connection. See Figure 5.38. inset
NOTE: Standard DMM probes will not fit in the con-
nector. Paper clips can be used to extend the probes into the connector. See Figure 5.38.
• If the DMM should read 4.7 to 5.0 volts, the sensor has proper power and return circuits. Check the blue
wire that runs from pin 3 of the sensor connector to pin 13 of the VCM’s 16 pin connector for continuity.
• If the DMM reads 0 volts, the 4 - 5 volts are either not getting to the sensor or the return circuit is faulty.
Check for voltage across pins 8 and 12 of the VCM’s 16 pin connector.
Figure 5.37
Steering angle
Figure 5.38
Paper clips