So...I'm hoping someone can offer some help.
I was changing my fuel filters and ran both engines a little with the fuel pumps disconnected (per the service manual). After replacing the filters and firing the engines up to check for leaks, all kinds of alarms started going off.
The SmartCraft Vesselview wouldn't sporadically show the engine data.
After checking all connectors and resetting the PCM's (which didn't help), I did some further diagnostics.
(1) The Startboard engine starts and everything reads OK as long as the Port Engine is OFF
(2) The Port engine will start, but as soon as it is key'd ON, the Starboard engine's CAN bus seems to go down as all the SmartCraft data goes away.
(3) With the Port engine running, the Startboard engine will NOT start
(4) Trim controls function for Port engine....but not Starboard
(5) Starboard engine has 7 CAN related Fault codes Active (CAN X and P); One specific code is reading "CAN Fault: PCM Authentication Failed"
I have a TechMate Pro and scanned both engines. The Starboard has a number CAN Faults, Type 9 and CAN X. That tool only reads an SPN # that I can find for cross-reference anywhere online.
If anyone has any advice, I'd really appreciate it. I'm totally stuck. I guess the mobile mechanic will be getting a call on Monday.
Update: I found the CAN X terminator connector in the harness a the front of the starboard engine. Doing a resistance check on that circuit shows only 40 Ohms. Referencing the same circuit on the port engine (which seems to be functioning properly), that circuit is showing closer to 120 Ohms.
Knowing a little bit about CAN system function, if the resistance in the circuit is too close to Zero Ohms, the communication cannot properly function as there is too much noise if the circuit is close to ground.
Thanks!
I was changing my fuel filters and ran both engines a little with the fuel pumps disconnected (per the service manual). After replacing the filters and firing the engines up to check for leaks, all kinds of alarms started going off.
The SmartCraft Vesselview wouldn't sporadically show the engine data.
After checking all connectors and resetting the PCM's (which didn't help), I did some further diagnostics.
(1) The Startboard engine starts and everything reads OK as long as the Port Engine is OFF
(2) The Port engine will start, but as soon as it is key'd ON, the Starboard engine's CAN bus seems to go down as all the SmartCraft data goes away.
(3) With the Port engine running, the Startboard engine will NOT start
(4) Trim controls function for Port engine....but not Starboard
(5) Starboard engine has 7 CAN related Fault codes Active (CAN X and P); One specific code is reading "CAN Fault: PCM Authentication Failed"
I have a TechMate Pro and scanned both engines. The Starboard has a number CAN Faults, Type 9 and CAN X. That tool only reads an SPN # that I can find for cross-reference anywhere online.
If anyone has any advice, I'd really appreciate it. I'm totally stuck. I guess the mobile mechanic will be getting a call on Monday.
Update: I found the CAN X terminator connector in the harness a the front of the starboard engine. Doing a resistance check on that circuit shows only 40 Ohms. Referencing the same circuit on the port engine (which seems to be functioning properly), that circuit is showing closer to 120 Ohms.
Knowing a little bit about CAN system function, if the resistance in the circuit is too close to Zero Ohms, the communication cannot properly function as there is too much noise if the circuit is close to ground.
Thanks!
Last edited: