Air Flow Meter
- Connect ohmmeter across pins 26 and 33 in control unit connector and pins 33 and 34 in air flow meter connector. See Fig 1. Resistance should be 280-400 ohms. If not, check resistance at meter. If not correct, repair harness or replace air flow meter.
Connect ohmmeter as shown.
- Connect ohmmeter across pins 33 and 31 in control unit connector and pins 34 and 32 in air flow meter connector. Resistance should measure any value except 0 and infinity. If not, check resistance at meter. If okay at meter, repair harness. If not, replace air flow meter.
- Connect 1 lead of ohmmeter to ground, and other lead to connector pin 26, then 31, then 33 on control unit and connector pin 33, then 34, then 32 on air flow meter.
- Infinite resistance should be shown in all cases. If not, repeat check at connector pins or air flow meter. Repair harness or replace meter as necessary.
- Operate air flow meter flap by hand to ensure it moves smoothly without binding. If okay, meter is functioning properly. If not, replace air flow meter.