U0168

Test 1 - 3:

Test 4 - 5:

SYMPTOM
U0168-NO SKIM BUS MESSAGES

WHEN MONITORED
Ignition on or Engine Running.

SET CONDITION
No BUS messages are received from the SKIM for 20 seconds.

POSSIBLE CAUSES
- Intermittent condition
- PCI bus circuit open from PCM to SKIM
- Loss of SKIM communication
- SKIM/PCM