Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Saab >> 1994 >> 900 Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Engine Sensors & Switches >> Engine Controls - System/Component Tests >> Crankshaft Position Sensor (9000 Series)

Crankshaft Position Sensor (9000 Series)

  1. Connect DVOM between ECM terminal No. 40 (Green/Red wire) and No. 47 (Black wire). Slowly turn engine over by hand. Voltage should change abruptly from less than 0.4 volt (shutter open) to approximately 12 volts as shutter closes.
  2. If voltage is not as specified, inspect wiring harness and connectors. If wiring and connectors are okay, replace sensor, located behind crankshaft pulley.
  3. If engine performance is poor, check ignition timing. If timing marks appear to move back and forth, inspect sensor for chips or a loosely mounted magnet. Repair or replace as necessary.
scientia non olet · About Mike's Workshop Manuals