No Response From Instrument Cluster

Tests 1 - 3:

Tests 4 - 6:

SYMPTOM
NO RESPONSE FROM THE INSTRUMENT CLUSTER

POSSIBLE CAUSES
- MIC ground circuit open
- IGN run start CKT open
- Fused B(+) circuit open
- CCD bus(+) circuit open
- CCD bus(-) circuit open
- Instrument cluster - no communication