Additional Driver Door (w/RKE)Failing to Unlock From Any Switch

Tests 1 - 4:

SYMPTOM
ADDITIONAL DRIVER DOOR (W/RKE) FAILING TO UNLOCK FROM ANY SWITCH

POSSIBLE CAUSES
- DRVR door unlock relay control circuit at BCM inoperative
- Driver door unlock relay coil resistance out of tolerance
- Driver door unlock relay defective
- Driver unlock relay output circuit shorted to ground
- Voltage too low at junction block fused B(+) circuit