Skylark L4-138 2.3L SOHC VIN 3 MFI QUAD 4 (1992)
Crankshaft Position Sensor: Technical Service Bulletins
1987-92 Service Manuals - Step 13
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Connect a DVM between terminals "B" and "C" of IDI module harness.
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Measure the combined resistance value of the crank sensor and crank sensor harness.
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Resistance should be between 500 and 900 ohms.
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Crank the engine and observe voltage (AC scale).
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Reading should be greater than 200 mV. Are both the DVM readings within the given values?