Contents Section: Mirrors All sections

Power Mirror System Cadillac DeVille Concours

Mirrors 4 illustrations ~1161 words

DESCRIPTION

One mirror control switch adjusts both left (driver side) and right (passenger side) mirrors. Rotate mirror select switch left (counterclockwise) or right (clockwise) to select mirror, and use joystick to adjust mirror. Heated mirrors are included with power mirrors. Heating elements are not functional unless vehicle is also equipped with electric rear window defogger.

Each power mirror assembly contains 2 reversible motors: an up/down motor and a left/right motor. Mirror control switch reverses polarity of motor circuit to change direction of mirror movement. Each motor contains a self-resetting circuit breaker, which opens when mirror reaches its mechanical limit of travel. On vehicles with memory seat/mirror systems, each power mirror assembly contains potentiometers that are used to determine mirror position.

TROUBLE SHOOTING

Before proceeding with specific testing, check the following for proper operation

  1. Check courtesy lights for proper operation.
  2. Check fuses, and replace as necessary.
  3. Check and ensure grounds are clean and tight.
  4. Check for broken or partially broken wire inside insulation, which could cause system malfunction, but prove good in a continuity/voltage check with system disconnected. These circuits may be intermittent or resistive when loaded, and if possible, should be checked by monitoring voltage drop with system operational (under load).
  5. Check for proper installation of aftermarket electronic equipment.

SYSTEM TESTING

Note. Before performing following tests, ensure circuit ground, circuit harness wiring and circuit fuse are okay. Also, ensure all circuit connections are clean and tight.

Note. For testing of heated mirrors, see appropriate DEFOGGER - MIRROR & REAR WINDOW article.

BOTH MIRRORS DO NOT OPERATE

Check for open or short to ground in Orange wire at power mirror switch. Check for open in Black wire at power mirror switch. If circuits are okay, replace power mirror switch.

Seville

Check for open in Yellow wire between power mirror switch connector terminal "C" and S502 (located in left front door harness). If circuit is okay, replace power mirror switch.

Check for open in Light Blue wire between power mirror switch connector terminal "B" and S506 (located in left front door harness). If circuit is okay, replace power mirror switch.

Concours & Deville

Check for open in Yellow wire between power mirror switch connector terminal "H" and S502 (located in left front door harness). If circuit is okay, replace power mirror switch.

Check for open in Brown/White wire between power mirror switch connector terminal "C" and S600 (located in right front door harness). If circuit is okay, replace power mirror switch.

Check for open in Light Green wire between power mirror switch connector terminal "F" and left power mirror connector terminal "C". Check for open in Yellow wire between left power mirror connector terminal "D" and S502 (located in left front door harness). If circuits are okay, replace left power mirror.

Check for open in Light Green wire between power mirror switch connector terminal "E" and left power mirror connector terminal "C". Check for open in Yellow wire between left power mirror connector terminal "D" and S502 (located in left front door harness). If circuits are okay, replace left power mirror.

Check for open in purple/white wire between power mirror switch connector terminal "B" and right power mirror connector terminal "C". Check for open in Brown/White wire between right power mirror connector terminal "D" and S600 (located in right front door harness). If circuits are okay, replace right power mirror.

Check for open in purple/white wire between power mirror switch connector terminal "F" and right power mirror connector terminal "C". Check for open in Yellow wire between right power mirror connector terminal "D" and S502 (located in left front door harness). If circuits are okay, replace right power mirror.

Check for open in white wire between power mirror switch connector terminal "G" and left power mirror connector terminal "B". Check for open in Yellow wire between left power mirror connector terminal "A" and S502 (located in left front door harness). If circuits are okay, replace left power mirror.

Check for open in White wire between power mirror switch connector terminal "D" and left power mirror connector terminal "B". Check for open in Light Blue wire between left power mirror connector terminal "A" and S506 (located in left front door harness). If circuits are okay, replace left power mirror.

Check for open in red/white wire between power mirror switch connector terminal "A" and right power mirror connector terminal "B". Check for open in Brown/White wire between right power mirror connector terminal "A" and S600 (located in right front door harness). If circuits are okay, replace right power mirror.

Check for open in Red/White wire between power mirror switch connector terminal "G" and right power mirror connector terminal "B". Check for open in Light Blue wire between right power mirror connector terminal "A" and S506 (located in left front door harness). If circuits are okay, replace right power mirror.

REMOVAL & INSTALLATION

CAUTIONWhen battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.
CAUTIONOn some models, momentary actuation of power window switch can cause window to move directly to fully open position. When working inside door, leave ignition off whenever possible.

Disconnect negative battery cable. Insert flat tool between switch plate and trim panel, and disengage spring clip. If switch plate is attached to trim panel with screws, remove screws. Disconnect outside mirror control switch electrical connector. To install, reverse removal procedure.

Removal

Disconnect negative battery cable. Pull mirror and backing plate assembly out of mirror housing. (Scheme 1) Remove jack screws from mirror backing plate. If equipped with left outside mirror defogger, cut wires at splice location.

Installation

If equipped with left outside mirror defogger, splice wires together at splice location. Snap jack screws into NEW mirror backing plate. Align jack screws to drive unit, and align drive unit swivel to pivot points on mirror backing plate. Push mirror and backing plate assembly into housing until assembly clicks into place. Check mirror operation.

Scheme 1

Scheme 1: Installation
  1. Cover door to avoid damage to painted surface. Tape mirror, then break mirror glass. Remove broken glass from mirror frame. Wipe inside of mirror frame clean.
  2. To install, remove paper backing from replacement mirror glass. Center mirror glass in mirror frame, and firmly press into place.
  1. Disconnect negative battery cable. Unsnap outside mirror and case from mirror shell. Noting position of mirror motor, remove mirror motor bolts and screws.
  2. Beginning with bottom wire, label wires in numerical order to aid in installation procedure. Cut wires from motor as close to motor as possible. Remove mirror motor. To install, reverse removal procedure. Splice wires in proper order.

POWER MIRROR ASSEMBLY

Note. On some models, if removing right power mirror, it may be necessary to detach part of instrument panel.

Fold back carpet and remove screw, if necessary. Remove switch plates. Using Door Trim Pad and Garnish Clip Remover (J 38778), remove trim. Remove door trim panel. Remove water deflector, if necessary. Disconnect electrical connectors. Remove nuts and power mirror assembly. To install, reverse removal procedure. Tighten power mirror nuts to specification. See TORQUE SPECIFICATIONS .

TORQUE SPECIFICATIONS

ApplicationINCH Lbs. (N.m)
Power Mirror Nuts54 (6)

TORQUE SPECIFICATIONS

Automatic Day/Night Mirror System Wiring Diagram (Concours & DeVille). Scheme 2

Scheme 2: Automatic Day/Night Mirror System Wiring Diagram (Concours & DeVille)
Scheme 3: Power Mirror System Wiring Diagram (Concours & DeVille)
Scheme 4: Power Mirror System Wiring Diagram (Seville)