Bus (+/-) Signals Open/No Response From Power Liftgate Module

Tests 1 - 2:

Tests 3 - 5:

Tests 6 - 8:

SYMPTOM
BUS ± SIGNALS OPEN OR NO RESPONSE FROM POWER LIFTGATE MODULE

POSSIBLE CAUSES
- Fused B(+) circuit open
- Ground circuit open
- Body control module - liftgate wake up ground open
- Liftgate module wake up signal wire open
- Liftgate module wake up signal wire short to voltage
- Liftgate module wake up signal wire short to ground
- PCI bus circuit open
- Power liftgate module - open