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Intake manifold pressure sender: testing > < Test process

Leon Mk2

Test the voltage supply and the wiring to the control unit
Test the voltage supply and the wiring to the control unit
Test condition
l  Battery voltage, 11.5 V minimum
Test process
–  Detach the 6-contacts connector from the throttle valve control unit.
   
–  To test the voltage, connect the multimeter to contacts 2+6 of the connector, using the auxiliary leads of the -V.A.G. 1594 A-.
–  Switch on the ignition. Target value: 4.5 V min
–  Switch off the ignition.
  M24-0068
–  To test the voltage, connect the multimeter to contact 2 of the connector and earth.
–  Switch on the ignition. Target value: 4.5 V min
–  Switch off the ignition.
If the target values are not reached:
  M24-0069
–  Connect the test box -V.A.G. 1598/31- to the wiring harness of the control unit, without connecting the engine control unit.
  N24-0943
–  Test for open circuits in the wiring between the test box and the connector, following the wiring diagram. Contact 1+female contact 92 Contact 2+female contact 83 Contact 3+female contact 117 Contact 4+female contact 84 Contact 5+female contact 118 Contact 6+female contact 91 Wire resistance: 1.5 Ω max.
–  Also test the wiring shorts circuit between wires.
–  Test the wiring for short circuits to battery positive or earth.
If no fault is found in the wiring:
–  Test the voltage supply of the engine control unit → Chapter.
  M24-0048

Intake manifold pressure sender: testing > < Test process