Bus (+/-) Signals Open/No Response From Instrument Cluster

Tests 1 - 3:

Tests 4 - 6:

Tests 7 - 9:

SYMPTOM
BUS +/- SIGNALS OPEN OR NO RESPONSE FROM INSTRUMENT CLUSTER

POSSIBLE CAUSES
- Attempt to communicate with the BCM
- Open ground circuit
- Open fused B+ circuit
- Open PCI bus circuit
- Instrument cluster wake up sense CKT open
- Instrument cluster wake up sense CKT internally open
- Instrument cluster wake up sense CKT shorted to voltage
- Instrument cluster wake up sense CKT internally shorted to voltage
- Instrument cluster
- Body control module