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I am working on my 1994 Mazda B4000 with the Ford 4.0L OHV V6 engine and M5OD 5-speed manual transmission. I have been intermittently experiencing a check engine light with OBD1 continuous code 14 - Profile Ignition Pickup (PIP) circuit failure along with hesitation, lack of power (especially under load), erratic idle and poor fuel economy. The research that I have done on this code points to the Ignition Control Module or Crankshaft Position sensor as probable causes, but I would like to verify which one is failing. I found some information that said the Crankshaft Position Sensor generates AC voltage that should fluctuate between 0.5-1.0 volt as it reads the crankshaft position. I tested my sensor and it seems to stay at 0.8 volts, but did drop to 0.7 volts at one point and stayed there for some time. To properly test the Ignition Control Module I am assuming that I would need to be testing the module as the problem is occurring, which may prove to be difficult as it seems to be very intermittent. Does anyone have any advice regarding this code that might point me in the right direction? Thank you in advance for your help.
Does anyone know for sure if the camshaft synchronizer can cause a PIP circuit failure if it is faulty? I have heard some belt chirping type noise on first startup that doesn't appear to be coming from the serpentine belt. I have read that a failing cam synchronizer can make this same noise.
