jeep p1686 P1686No SKIM BUS Messages ReceivedNo CCD/J1850 messages received from the Smart Key Immobilizer Module (SKIM). Vehicle will start and run for 2 sec then shut down.
Model: Grand Cherokee Limited
checked fuses changed battery terminals. checked ground connections. vehicle was running and all of a sudden I Lost insturument gauges (TACH FUEL SO ON) vehicle was still running until I shut off the key. Vehicle would not restart and gave engine code 1686 P1686
No SKIM BUS Messages Received
No CCD/J1850 messages received from the Smart Key Immobilizer Module (SKIM).
Welcome to Just Answer Jeep my name is Mark.This code essentially means the module is no longer responding and needs to be replaced. There is security programming that is required for this repair so your local shop or dealer has to do this for you.
Is there any troubleshooting tips you can give me. is there a trouble tree that I can follow somewhere inline that you know of?
Since this code indicates that the module is not communicating or sending messages to the rest of the vehicle a simple test to see if the module is getting power and ground is all that is required. If the module has power and ground then it needs replacing.
Does this have anything to do with the instrument cluster not working?
Yes, if the communication bus ceases to operate due to a failed module then it will affect the cluster too because the cluster relies on the bus to get it's info.
Jeep factory training........25 years in the industry.