Crank no start issue? The only error I get is P0335?

Tiny
ICUCAMERA51
  • MEMBER
  • 2007 CADILLAC STS
  • 3.6L
  • V6
  • 2WD
  • AUTOMATIC
  • 11,000 MILES
Basically, I have been trying to get this car started for a while. It cranks and feels like it wants to start. I look and check for spark and there is none. I've been trying to narrow down the issue. It seems like it's more electrical. I've done about 30 tests, and it seems that on my ignition coil signal wire I am only getting.5 volts on crank. I have 2.8 volts on my two crank shaft sensor wires (ECU end) I have not checked the power at crank on the crankshaft. The cams seem to have 5 volts steady on signal wire and constant wire. The only error I get is p0335 circuit malfunction other tests Leads me to think that I have a ground or circuit issue. I need to know what the voltage should read on these devices.
Wednesday, September 13th, 2023 AT 8:49 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,622 POSTS
The P0335 trouble code a problem with the vehicle's crankshaft position sensor circuit. So, I would replace the crankshaft angle sensor which should fix the problem. Check out the images (below). Please let us know how it goes.
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Wednesday, September 13th, 2023 AT 1:51 PM
Tiny
ICUCAMERA51
  • MEMBER
  • 2 POSTS
I didn't mention it but changed the crank sensor. From what I can tell, I have 2.4 volts on ppl/white wire. And black/white wire, but on my signal wires for my coils. I get.5 volts on my meter. When cranking. Something doesn't seem right. I've replaced coils and cam sensors. Are the voltage correct for the crankshaft sensor and. Ignition coils? I have 12 volts on primary wire, FYI.
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Wednesday, September 13th, 2023 AT 3:33 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,622 POSTS
Yes, they all sound correct. The code is for a circuit error so let's check the connections to from the sensor to the PCM and check the wiring for contact to ground, both connectors need to be disconnected while testing.

https://www.2carpros.com/articles/how-to-check-wiring

here are the engine and crankshaft sensor wiring diagrams to help you with the testing. Check out the images (below). Please let us know what you find.
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Thursday, September 14th, 2023 AT 10:55 AM

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