Missing Vehicle Speed Input

Test 1 - 3:

Test 4:

SYMPTOM
MISSING VEHICLE SPEED INPUT

WHEN MONITORED
Continuously with the ignition on.

SET CONDITION
When the Transfer Case Control Module stops receiving a bus message for Vehicle Speed for the period of 5 seconds

POSSIBLE CAUSES
- PCM communication DTC's present
- Verify cluster operation
- Transfer case control module
- Intermittent wiring and connectors