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post #46 of 50 Old 02-28-2013, 06:08 AM
ratmonkey
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Are you checking the Cam sensor with an analog meter? digital meters don't respond fast enough.

(I've only read this page thus far.)


'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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post #47 of 50 Old 03-01-2013, 02:36 PM Thread Starter
PaYj
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Yes analog meter. I have to make sure I'm getting a good connection on the ckp and find out why I always have 5v on cam signal wire

78 J10 360 V8
88 Yj 305 V8 SOA
96 Zj 3.5
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post #48 of 50 Old 03-05-2013, 05:31 AM Thread Starter
PaYj
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Sorry work has been crazy, I got home this morning and disconnected cam sensor and checked harness side of connector, and I is e 5v constant on both outside wires of cam sensor, tomorrow before work I am going to disconnect at PCM and check and see if voltage is present at pin out there, if it is how do I tell where is coming from, I would assume a shorted wire put if it is coming direct from PCM where would I start looking

78 J10 360 V8
88 Yj 305 V8 SOA
96 Zj 3.5
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post #49 of 50 Old 03-05-2013, 04:58 PM
ZeeJay1997
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Looking back at the diagram, pin 1 is the sensor 5v from the PCM, pin 2 is ground, and 3 is the signal output from sensor.

I think you already have this figured out, but is appears the PCM is producing the 5v you are reading with the connector unplugged. So you are headed the right direction to pull the connector off the PCM and see if the voltage disappears on pin 3.

I dont know if you ever determined what is on pin 2. It should be ground with switch on. best way to check is use pin 1 for red lead and pin 2 for black. Should get 5V. The will give you an indication idea if something else is causing the PCM to output the voltage on the cam sensor input. If this is not the case, most likely the PCM is shot.
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post #50 of 50 Old 03-06-2013, 01:58 PM
ratmonkey
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if the voltage is coming from the computer then the computer has an internal fault in the 5v supply bus and would need replaced.

'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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