Mixture Calibration Potentiometer: Testing and Inspection

TEST PROCEDURE

- Push back protective boot on MAF sensor connector (leaving sensor connected).

Note:
The connector terminals are appropriately identified on the back of the connector:

- Connect multimeter (Fluke 83 or equivalent) between connector terminals 2 and 4, using adapter cables from VW 1594 connector test kit.

- Switch ignition on.
Specified value: 1.0-7.5 volts

If specified values are not obtained:
The CO% potetiometer is faulty. Replace mass air flow sensor.