No Response From Sentry Key Immobilizer Module

Test 1 - 3:

Test 4 - 6:

SYMPTOM
NO RESPONSE FROM SENTRY KEY IMMOBILIZER MODULE

POSSIBLE CAUSES
- Attempt to communicate with the BCM
- Ground circuit open
- Fused ignition switch output circuit open
- Fused B(+) circuit open
- Sentry key immobilizer module (SKIM)
- PCI bus circuit open
- Body control module