Rev. 06/2022
27
Observe error messages in MICT
If malfunctions occur, observe in general the error messages in MICT. These
can help you to narrow down the errors. For this, also read the
corresponding sections in the operating manual on the VariStep stepper
motor driver.
Problem:
Throttle does not move although corresponding signals are sent from the stepper motor driver.
You can recognize this problem by the fact that the groove on the axis of the throttle does not
move in the event of corresponding signals.
Possible Causes and Solutions:
Cause 1:
The wiring between the VariStep stepper motor driver and ITB throttle is defective.
Solution 1:
Check the connection harness and the connections to the stepper motor driver. For this, also
read the corresponding sections in the operating manual on the VariStep stepper motor driver.
Cause 2:
The VariStep stepper motor driver was incorrectly configured.
Solution 2:
Check the configuration via the MICT. Observe the error messages displayed. For this, also read
the corresponding sections in the operating manual on the VariStep stepper motor driver.
Cause 3:
The stepper motor is defective.
Solution 3:
The ITB throttle has to be replaced. Please contact your MOTORTECH contact person.
7 Errors
Summary of Contents for ITB 100 Series
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