Crankshaft Position Sensor (Method With Oscilloscope)

Connect the probe to ECM connector.

Fig 1: Identifying ECM Harness Connectors

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Fig 2: Measuring Voltage Between ECM Connector Terminals

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Terminal No.	Probe
17	+
25	-

Start the engine and let it idle.
Check the pattern is the same as the waveform and voltage shown below.

Fig 3: Crankshaft Position Sensor Output Waveform
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After inspection, install the related parts in the reverse order of removal.