Camshaft Position Sensor
2013 Jeep Wrangler · 3.6L V6
Sensor Type
hall-effect
Waveform Type
dc-square
Location
Left cylinder head rear (Bank 1) and right cylinder head rear (Bank 2), mounted in valve cover area reading camshaft tone wheel
Pins
3-pin connector
Idle Frequency
16.7 Hz
Timebase
50ms/div
Voltage Scale
2V/div
Trigger
2.5V, rising edge
Wiring
Orange (5V reference), Gray/Black or Tan/Yellow (sensor signal depending on bank), Black (ground)
Expected Voltage Range
At Idle
0.2V to 5V
At Higher RPM
0.1V to 5V
Expected Pattern
Square wave pattern with varying pulse widths corresponding to cam position identification slots, runs at half crankshaft speed
Known-Good Waveform
Digital square wave switching between 0.2V and 5.0V at approximately half the frequency of crankshaft sensor (around 16-18 Hz at idle). Pattern shows distinct pulse width variations used for cylinder identification. Transitions should be clean and vertical with no noise.
Common Failure Patterns
Loss of signal or intermittent dropouts, especially when engine is hot
Cause: Heat-related failure of Hall-effect sensor element, common on high-mileage 3.6L engines
Timing correlation errors between cam and crank sensors
Cause: Timing chain stretch or jumped timing chain, common issue on 2012-2013 model years
Diagnostic Tips
The 3.6L Pentastar had timing chain stretch issues on early production years causing correlation codes. Always verify cam-to-crank timing relationship with dual-trace scope before replacing sensors. Clean oil residue from sensor tip as VVT oil spray can coat sensors.
Related Diagnostic Trouble Codes
P0340P0341P0342P0343P0344
Always confirm waveform data with your vehicle's OEM service manual before diagnosing.
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