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Gang,
I was intermittently getting the following error code:
Source: FuelSender
Plug: 0
SPN: 723
FMI: 2
Description: DTC 341: Camshaft position Sensor Input Signal Noise
Count: 8
It was weird. I got a bunch of them in one day, then they just stopped. For nearly 20 hours of run time I didn't get a single one. In the meantime, I had WLM send me a new camshaft position sensor.
The problem surfaced again last weekend so I decided enough was enough. Time to dig into it.
I'm sure it's different on the G and GS boats, but on the 230 you have to do some work to get to it. I decided to go in from the Port side because it's much easier to get the bulkhead brackets and panels out on that side. The Starboard side has the fuel filter bracket and blower bracket attached. Anyway, got all that stuff out of the way and took the plastic pulley cover off.
I knew where the camshaft position sensor was so I started looking to replace it. It was clear the raw water pump pulley was in the way so I took the belt and then pulley off. As soon as I had the pulley off, I saw the problem:
This is the wire bundle coming out of the harness headed down to the Camshaft Position sensor. It was improperly routed and the spindle for the raw water pump was rubbing it. The gray wire was missing about an inch of insulation and the pink wire just a small spot. Neither were worn through. This was causing the intermittent code.
The fix wasn't really horrible. I had to carefully cut the bundle wrap to expose the individual wires. I think there were six total. Then I had to tape up the pink and gray wires individually and then re-wrap the entire bundle. Finally I rerouted the bundle and zip-tied it in place so it wouldn't shift again.
Anyway, that's about it. I sure learned a lot about how to get in and out of the area behind the engine. I'll be back in there in the spring anyway replacing the impeller....
-Charles
I was intermittently getting the following error code:
Source: FuelSender
Plug: 0
SPN: 723
FMI: 2
Description: DTC 341: Camshaft position Sensor Input Signal Noise
Count: 8
It was weird. I got a bunch of them in one day, then they just stopped. For nearly 20 hours of run time I didn't get a single one. In the meantime, I had WLM send me a new camshaft position sensor.
The problem surfaced again last weekend so I decided enough was enough. Time to dig into it.
I'm sure it's different on the G and GS boats, but on the 230 you have to do some work to get to it. I decided to go in from the Port side because it's much easier to get the bulkhead brackets and panels out on that side. The Starboard side has the fuel filter bracket and blower bracket attached. Anyway, got all that stuff out of the way and took the plastic pulley cover off.
I knew where the camshaft position sensor was so I started looking to replace it. It was clear the raw water pump pulley was in the way so I took the belt and then pulley off. As soon as I had the pulley off, I saw the problem:
This is the wire bundle coming out of the harness headed down to the Camshaft Position sensor. It was improperly routed and the spindle for the raw water pump was rubbing it. The gray wire was missing about an inch of insulation and the pink wire just a small spot. Neither were worn through. This was causing the intermittent code.
The fix wasn't really horrible. I had to carefully cut the bundle wrap to expose the individual wires. I think there were six total. Then I had to tape up the pink and gray wires individually and then re-wrap the entire bundle. Finally I rerouted the bundle and zip-tied it in place so it wouldn't shift again.
Anyway, that's about it. I sure learned a lot about how to get in and out of the area behind the engine. I'll be back in there in the spring anyway replacing the impeller....
-Charles
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