QuestionQUESTION: I have a 2004 Sebring 2.4 with the 0016 and 0340 codes in the PCM. Vehicle will not start at all. Replaced the cam sensor and still no start. Was going to replace the crank sensor but the scan tool is reading RPM's while cranking. Wouldn't that mean that he crank sensor is OK? Any input would be greatly appreciated. Thanks.
ANSWER: Hi John,
The malfunction "thresholds" are different to set the various codes that are possible. The 0016 can be set without there being a frank 0320 or 0340. I would erase the codes by disconnecting the battery and see what comes back after you try to start it several times. Let me know.
The 0016 remediations include: check the cam signal with a scope, inspect cam harness, inspect the cam's tone wheel/pulse ring (as applicable to your engine), inspect crank harness, inspect its tone wheel/pulse ring, possibly an intermittent crank signal, the cam sensor is bad, crank sensor is bad.
So I would first do the things that cost nothing, then replace parts (like the crank sensor) if nothing else can be tried. The rpm's may show but the crank signal may not be of sufficient quality to support running of the engine.
Roland
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QUESTION: Cleared the codes and only the 0340 comes back. Cam sensor did not fix. still haven't tried the crank sensor though. Thanks for your help.
AnswerHi John,
In that case my suggestion would be to verify the wiring of that sensor and also do a voltage test on its signal.
The wiring is: black/light blue on pin 2 of the connector to pin 27 at the pcm,
tan/yellow on pin 3 to pin 34 of the pcm
violet/white on pin 1 to pin 29 of the pcm
Use an ohmmeter to verify conductivity between the pins listed, and that the wire is not conducting to chassis ground (althogh the pin 2 wire may show such a ground so ignore that one).
With the ignition switch on you should get 5V on pin 1. Then plug in the sensor and probe the other two wires with fine pins if nescessary to make contact. Then turn the engine over by hand using a socket on the crank pulley bolt and observe for whether the voltage reading pulses between 0.3 and 5.0V several times for each revolution of the crank. If so, then everything is OK. Otherwise, let me know.
Roland
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