Porsche 928 Workshop Manual page 80

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03
Maintenance, Self-diagnosis 928
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Error code 2133
This error code indicates a fault in the control
unit.
If this error code appears, replace the EZK con-
trot unit.
Error code 2134
This error code indicates a fault in the area of
the Hall generator signal.
Possible faults:
Short-circuit to ground
Break in the circuit
Testing the Hall generator signal
Disconnect the plug from the EZK control unit.
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Connect an oscilloscope to terminal 22 and ter-
minal 4 of the EZK plug.
Operate the starter motor
The following image must appear on the oscil
loscope.
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l---r
5V
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If this is not the case, carry out the test on the
Hall generator directly.
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Trouble-shooting, EZK control unit
Printed in Germany-XX, 1988
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