All Locks Inoperative From A Door Lock Switch

Tests 1 - 3:

Tests 4 - 9:

SYMPTOM
ALL LOCKS INOPERATIVE FROM A DOOR LOCK SWITCH

POSSIBLE CAUSES
- Door lock switch - shorted to ground
- Door switch ground wire open
- Door switch MUX wire shorted to voltage
- Cylinder lock switch shorted to ground
- Door switch MUX wire open
- Door lock switch - open
- Door switch MUX wire shorted to ground
- Remote keyless entry module high voltage
- Remote keyless entry module - low voltage