GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2005 🢒 DeVille 🢒 Body 🢒 Doors 🢒 Door Lock/Indicator Schematics
Figure 1:

Driver Door Power Door Lock
Object Number: 1412289 Size: FS
Master Electrical Component List
Power Door Locks Description and Operation
Left Middle Door Power Door Lock (V4U)
Class 2 Serial Data (1 of 3)
Class 2 Serial Data (3 of 3)
Class 2 Serial Data (2 of 3)
G201 - 1 of 3
Driver Door Switch Assembly (DDSA) Power, Ground, Inputs and Outputs
G201 - 1 of 3
Front Door Dimming
Figure 2:

Left Middle Door Power Door Lock (V4U)
Object Number: 1412291 Size: FS
Master Electrical Component List
Power Door Locks Description and Operation
Left Rear Door Power Door Lock
Driver Door Power Door Lock
Left Middle Door Power Window (V4U)
Class 2 Serial Data (3 of 3)
Class 2 Serial Data (2 of 3)
Figure 3:

Left Rear Door Power Door Lock
Object Number: 1412294 Size: FS
Master Electrical Component List
Power Door Locks Description and Operation
Right Front Door Power Door Lock
Left Middle Door Power Door Lock (V4U)
Class 2 Serial Data (3 of 3)
Class 2 Serial Data (2 of 3)
Rear Door Dimming
Left Power Windows
Figure 4:

Right Front Door Power Door Lock
Object Number: 1412296 Size: FS
Master Electrical Component List
Power Door Locks Description and Operation
Right Front Door Power Door Lock (B9Q)
Left Rear Door Power Door Lock
Right Front Door Power Door Lock (B9Q)
Right Front Door Power Door Lock (B9Q)
Class 2 Serial Data (2 of 3)
Right Power Windows
Front Door Dimming
Figure 5:

Right Front Door Power Door Lock (B9Q)
Object Number: 1412298 Size: FS
Master Electrical Component List
Power Door Locks Description and Operation
Right Middle Door Power Door Lock (V4U)
Right Front Door Power Door Lock
Right Front Door Power Door Lock
Right Front Door Power Door Lock
PWR WDO Circuit Breaker
G201 - 3 of 3
Figure 6:

Right Middle Door Power Door Lock (V4U)
Object Number: 1412302 Size: FS
Master Electrical Component List
Power Door Locks Description and Operation
Right Rear Door Power Door Lock (w/o B9Q)
Right Front Door Power Door Lock (B9Q)
Right Middle Door Power Window (V4U)
Class 2 Serial Data (2 of 3)
Figure 7:

Right Rear Door Power Door Lock (w/o B9Q)
Object Number: 1412307 Size: FS
Master Electrical Component List
Power Door Locks Description and Operation
Power Door Locks Middle Door Release (V4U) - 1 of 2
Right Middle Door Power Door Lock (V4U)
Class 2 Serial Data (2 of 3)
Right Power Windows
Rear Door Dimming
Figure 8:

Power Door Locks Middle Door Release (V4U) - 1 of 2
Object Number: 1412311 Size: FS
Master Electrical Component List
Power Door Locks Description and Operation
Power Door Locks Middle Door Release (V4U) - 2 of 2
Right Rear Door Power Door Lock (w/o B9Q)
AUDIO AMP and EXPORT LTG/PWR LK Fuses
AUDIO AMP and EXPORT LTG/PWR LK Fuses
Left Middle Door Module (LMDM) Power and Ground Inputs and Outputs (V4U)
Power Door Locks Middle Door Release (V4U) - 2 of 2
Power Door Locks Middle Door Release (V4U) - 2 of 2
G302 - 3 of 3
G302 - 3 of 3
Figure 9:

Power Door Locks Middle Door Release (V4U) - 2 of 2
Object Number: 1412314 Size: FS
Master Electrical Component List
Power Door Locks Description and Operation
Power Door Locks Middle Door Release (V4U) - 1 of 2
PWR WDO Circuit Breaker
PWR WDO Circuit Breaker
Power Door Locks Middle Door Release (V4U) - 1 of 2
Power Door Locks Middle Door Release (V4U) - 1 of 2
PWR WDO Circuit Breaker
Right Middle Door Module (RMDM) Power and Grounds Inputs and Outputs (V4U)
G302 - 3 of 3
G302 - 3 of 3