Bus (+/-) Signals Open From SKIM

Tests 1 - 4:

Tests 5 - 6:

SYMPTOM
BUS +/- SIGNALS OPEN FROM SENTRY KEY IMMOBILIZER MODULE

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