No injection pulse

2002 NISSAN XTERRA
160,000 MILES • 3.3L • 6 CYL • 4WD • AUTOMATIC
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RANDY HAVENS
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  • 1 POST
No injection pulse, all fuses are good. Injection has hot, not ground signal from PCM. Cannot pull codes or get link to PCM. Engine runs on either. Security is my thoughts but cannot find any diagram on any wiring to security. And still do not understand why no link to two separate PCM's.
Jun 24, 2018 at 12:57 PM
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JACOBANDNICKOLAS
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Hi and thanks for using 2CarPros.com.

Have you checked for a signal from the cam sensor? The sensor creates a pulsating voltage which the ECM uses to operate the fuel injectors, ignition timing.

The sensor is located inside the distributor and is not replaceable, so we have to be sure it is the problem. If you have a live time scanner, you will have to check to see if there is a signal from the cam sensor.

If you find the sensor is faulty, to the best of my knowledge, the entire distributor needs replaced on this particular vehicle.

Let me know if this helps.

Joe
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Jun 25, 2018 at 8:38 PM