U0168

Test 1 - Test 2:

Test 3 - Test 4:

SYMPTOM
U0168-NO SKIM BUS MESSAGE

WHEN MONITORED
Ignition on or engine running.

SET CONDITION
No J1850 messages received from the Smart Key Immobilizer Module (SKIM) for 20 seconds. One Trip Fault. Three good trips to turn off the MIL.

POSSIBLE CAUSES
- Good trip equal to zero
- No response from SKIM
- PCI BUS circuit open from PCM to SKIM
- SKIM/PCM