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Crankshaft Position Sensor

WARNING: This page is about a different car, the 1994 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.

A malfunction in the crankshaft position sensor circuit will set a related diagnostic trouble code. For testing procedures, refer to TESTS W/CODES - 4.6L article in this section. To diagnose position crankshaft sensor, the following procedures can be used:

  1. If a scan tester is available, scan RPM parameter while cranking engine. If RPM is indicated, crankshaft position sensor is operating properly.
  2. If scan tester is not available, disconnect crankshaft position sensor harness connector. Set ohmmeter to 2-k/ohm position, and measure resistance across sensor terminals. On 1.9L engines, resistance should be 700-900 ohms. On 2.3L engines equipped with IDI system, resistance should be 500-900 ohms. On all other engines, resistance should be 800-1200 ohms.
  3. On all engines, set voltmeter on the 2-volt AC scale. Crank engine and measure output voltage across sensor terminals. Voltmeter reading should be .8-1.4 volts. If resistance reading is not as specified or sensor does not produce the specified output voltage reading, repair faulty wiring or faulty crankshaft position sensor.
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