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2000 jeep grand cherokee, laredo package, 4.7 v-8. Some times engine light comes on, just bought a code scanner, but is not updated with this information. Having the hardest time to find its code definition.

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This code is for the SKIM or security system on the truck.

Here is some data for it.

SYMPTOM 
P1686 - NO SKIM BUS MESSAGE RECEIVED

WHEN MONITORED 
At ignition key ON and continuously during engine operation.

SET CONDITION 
This condition exists when a SKIM status bus message was not received from the SKIM module within the last 20 seconds .

POSSIBLE CAUSES 


 

  • Invalid SKIM key
  • Wiring harness intermittent problem
  • PCM internal PCI BUS open
  • PCM PCI BUS circuit open

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