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Dec 4, 2019 · 13 Posts
Discussion Starter · #1 ·
Dec 4, 2019 car was driving then stalled out , wouldnt start after had it towed home , Joined
Feb 21, 2014 · 3,486 Posts
P0340 is for the camshaft position sensor. P0335 is for the crankshaft position sensor. Pin on the right is the 5V supply. Pin on the left is the signal circuit. Pin in the middle is the ground circuit. Joined
Dec 4, 2019 · 13 Posts
Discussion Starter · #3 ·
Dec 4, 2019 you are right camshaft , yellow is 5v ,middle wire i get 0 volts and not ground right side i get ground blue wire i believe ..with key on Joined
Feb 21, 2014 · 3,486 Posts
They may have changed the pin assignments from one model year to another.
. Joined Dec 4, 2019 · 13 Posts
Discussion Starter · #5 ·
Dec 6, 2019 should i be able to see 5 volt suppy with key on ? i dont see anything when cranking ..i do have ground and 5 volt to yellow pink..since i dont see 5volt supply its probably a bad pcm then? what wire is it on the pcm connector
Joined Dec 4, 2019 · 13 Posts
Discussion Starter · #6 ·
Dec 6, 2019 i will have to check in the morning for the colors from what i think i have is 5 volt on yellow nothing for middle wire , end wire is ground just have to check the colors Joined Feb 21, 2014 · 3,486 Posts
When testing the connector for voltage ...
Joined Dec 4, 2019 · 13 Posts
Discussion Starter · #8 ·
Dec 7, 2019 i did that i get .5 volts on the yellow end one ,middle one none end is ground Joined Dec 4, 2019 · 13 Posts
Discussion Starter · #9 · Dec 7, 2019 i also changed the sensor with 4 different ones just incase they were bad Joined Feb 21, 2014 · 3,486 Posts
Using the OEM Mopar sensors is best. Some of the aftermarket brands don't perform as well. If you're getting 0.5V on the 5V supply circuit the sensor is not going to function; therefore you will not get a voltage output on the return signal. Either the PCM is not supplying 5V to the sensor or the wiring harness/connectors on the 5V supply to the
camshaft position sensor is bad. If you're getting 5V supply to other sensors (e.g. crankshaft position sensor) then it's not the 5V supply in the PCM. Instead it's the delivery of 5V between the PCM and the camshaft position sensor. Check the wiring harness/connectors between the camshaft position sensor and the PCM. Look for cracking/fraying, splits, corrosion, etc... You can unplug the PCM connector to check the condition of the pins/connector but don't probe the PCM harness
connector. Probing the PCM harness connectors can damage the PCM terminals. There's an adapter tool that's plugged onto the PCM harness connector for probing without damage to the PCM. Without the adapter tool you will not be able to perform any resistance checks but you can perform a voltage check to see if the the 5V supply circuit is shorted to battery voltage. Turn the ignition off. Joined Dec 4, 2019 · 13 Posts
Discussion Starter · #11 · Dec 7, 2019 i changed the pcm today and re checked the wiring to camshaft sensor , with it unpluged yellow wire .5 volts middle wire i now see .5 volts and end is ground , with harness pluged into sensor yellow wire is .5 volts middle wire is .01 volts end is ground ..still no start and still have p0340
Joined Feb 21, 2014 · 3,486 Posts
There seems to be a definite problem in getting the 5V supply to the sensor. The manifold absolute pressure (MAP) sensor is on the same power and ground circuit as the camshaft sensor. You may want to check the MAP connections to see if they are interfering with the camshaft sensor. . Joined Dec 4, 2019 · 13 Posts
Discussion Starter · #13 · Dec 8, 2019 should i unplug the map sensor then ? anything i can jump to start the car? Joined Dec 4, 2019 · 13 Posts
Discussion Starter · #14 · Dec 8, 2019 wouldnt i have a code for map sensor if that was an issue to..car has been down for 3 weeks now would like to get it running Joined Feb 21, 2014 · 3,486 Posts
You would think a MAP sensor code would get logged but it may be getting the 5V supply. If there's a problem with these sensors, or they're unplugged, the engine will not start/run. A good battery is required. Load test the battery to make sure there's no issues with the battery.
Sometimes the P0340 code gets set because of the crankshaft position sensor ... it's not common but it's not impossible. You can unplug the MAP sensor or crankshaft sensor and test them for 5V supply the same way you check the camshaft sensor (3-pin connector) with 5V, return signal and ground. The PCM is the 5V source for all three of these sensors.
Joined Dec 4, 2019 · 13 Posts Joined Dec 4, 2019 · 13 Posts
Discussion Starter · #17 · Dec 8, 2019 anything i can jump to start it ? Joined Feb 21, 2014 · 3,486 Posts
Crankshaft position sensor is on the passenger side. Short video shows it with the engine removed. I'm not aware of any jumper fixes for the sensors The PCM is expecting active signals from these sensors and bypassing the sensors is the same as removing the sensors. The PCM will not see an active signal and will not allow the engine to
start/run. Without the crankshaft/camshaft signals the PCM does not know where to set fuel injection, spark advance, etc... Joined Dec 4, 2019 · 13 Posts
Discussion Starter · #19 · Dec 10, 2019 (Edited) ok ened up changeing the crank shaft sensor ,also changed the maf sensor ,have 5 volts on all 3 sensors on 2 wires each and all 3 have ground ...still no start i dont even know where else to look , tried with both pcms also same thing
Joined Feb 21, 2014 · 3,486 Posts
Sounds like the PCM is delivering the 5V supply and all three sensors are able to return 5V signal. Have you cleared the codes and looked to see if any new codes are being logged? During engine start-up mode ... Check the ASD and fuel pump relays and fuses to make sure they're working. ASD relay and fuses are in the front fuse box (engine compartment). The fuel pump relay and fuses are in the rear fuse box (trunk). The 3.5L has a timing belt. How many miles on the engine and has the timing belt ever been changed? What are the symptoms of a failing crank sensor?5 Signs of a Failing Crank Sensor. Crank Sensor Problems Could Make it Hard to Start Car. One sign that your crankshaft sensor might be failing is if you find it hard to start your vehicle. ... . Engine Vibration Issues. ... . Fuel Economy Slippage. ... . Uneven Acceleration. ... . Check Engine Light On.. Where is the crankshaft position sensor located?The Crankshaft Position sensor is normally located in the timing cover or on the side of the block with a cylindrical portion that inserts into the block. Will a malfunctioning Cam or Crank Sensor illuminate the check engine light or affect vehicle operation?
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