Sunroof System Cadillac DTS I

Fastener Tightening Specifications

Scheme 1

Diagnostic Starting Point - Roof

Before you begin any diagnostic procedure, always review the system Description and Operation. Reviewing the Description and Operation will help you determine the correct diagnostic procedure, when a malfunction exists. Reviewing the Description and Operation will also help you determine if the condition described by the customer is normal operation.

After reviewing the system description and operation, always begin the system diagnosis with the Diagnostic System Check - Vehicle . The Diagnostic System Check will provide the following information

1. The identification of the control modules which command the system
2. The ability of the control modules to communicate through the serial data circuit
3. The identification of any stored diagnostic trouble codes and their status

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.

Symptoms - Roof

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) in order to verify that all of the following conditions are true: No DTCs are set. The control modules can communicate via the serial data link.
2. Review the system description and operation in order to learn the system functions. Refer to «Sunroof Description and Operation»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system) .

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the power sunroof system. Refer to «Checking Aftermarket Accessories»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__checking-aftermarket-accessories) .
2. Inspect the accessible system components for obvious damage or for conditions which can cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

1. «Power Sunroof Malfunction»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system)
2. «Retained Accessory Power (RAP) Description and Operation»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-introduction) , if the power sunroof should operate longer than the retained accessory power (RAP) time-out.

Diagnostic Instructions

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-system-check-vehicle) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/dts/i-2005-2011/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Diagnostic Fault Information

Circuit/System Description

The sunroof module determines the sunroof motor direction based on inputs received from the overhead console sunroof switches. The module supplies each of the sunroof switch signal circuits with a 5-volt reference. When the switch is pressed the signal circuit is pulled low signaling the roof open or closed request. When the ignition switch is in the ON position or when retained accessory power (RAP) is active, voltage is applied to the sunroof module via the RAP relay and the S/ROOF fuse. The sunroof module controls the sunroof motor direction by changing the polarity of the applied voltage. The sunroof module remembers the sunroof position whenever the ignition switch is turned to the OFF position. The limit switch is used as an input to the sunroof module to indicate that the glass is fully closed, or in the soft stop positions. The limit switch is grounded only when the sunroof glass is in the fully closed or soft stop positions, otherwise it is open.

Diagnostic Aids

If the sunroof is experiencing an intermittent inoperative condition, check the sunroof switch ground circuit for an open. If the sunroof switch ground circuit is open, the switch may take a redundant path to ground through the switch illumination circuit. When the lights are turned On, the redundant path to ground is removed, and the sunroof will become inoperative.

Reference Information

Schematic Reference

Sunroof Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Sunroof Description and Operation

Electrical Information Reference

1. «Circuit Testing»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__circuit-testing)
2. «Connector Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__testing-for-intermittent-conditions-poor)
4. «Wiring Repairs»(/cadillac/dts/i-2005-2011/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-service-troubleshooting-diagnosis__wiring-repairs)

Scan Tool Reference

Control Module References for Scan Tool Information

Circuit/System Verification

1. With the sunroof in the closed position, press the sunroof open switch. The sunroof should open. If the sunroof does not open, refer to «Power Sunroof Malfunction»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system__circuitsystem-testing) .
2. With the sunroof in the open position, press the sunroof close switch. The sunroof should close. If the sunroof does not close, refer to «Power Sunroof Malfunction»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system__circuitsystem-testing) .
3. With the sunroof in the closed position, press the sunroof vent open switch. The sunroof should open to the vent position. If the sunroof does not open to the vent position, refer to «Power Sunroof Malfunction»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system__circuitsystem-testing) .
4. With the sunroof in the vent open position, press the sunroof vent close switch. The sunroof should close. If the sunroof does not close, refer to «Power Sunroof Malfunction»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system__circuitsystem-testing) .
5. With the sunroof in the closed position, momentarily press the sunroof open switch to the second detente. The sunroof should express open. If the sunroof does not express open, refer to «Power Sunroof Express Feature Malfunction»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system__circuitsystem-testing) .
6. If all sunroof functions move in the commanded directions, but the roof does not find the closed position, refer to «Power Sunroof Motor Limit Switch Test»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system__circuitsystem-testing) .

Circuit/System Testing

Power Sunroof Malfunction

1. Ignition OFF, disconnect the harness connector at the sunroof switch.
2. Test for less than 15 ohms of resistance between the ground circuit terminal 5 and ground. If greater than the specified range, test the ground circuits listed below for an open/high resistance. If the circuits test normal, replace the sunroof control module. Sunroof switch terminal 5 Sunroof control module harness connector X1 terminal D
3. Connect a 3A fused jumper wire between the signal circuit listed below and ground. The roof should be inoperative in at least one or more directions. Sunroof open terminal 8 Sunroof close terminal 2 Vent open terminal 4 Vent close terminal 6 If the roof moved in all directions, replace the sunroof switch.
4. Disconnect the X1 harness connector at the sunroof control module.
5. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal A and ground. If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
6. Ignition OFF, connect the X1 harness connector at the sunroof control module.
7. Ignition ON, at the sunroof switch harness connector, test for 4.8-5.2 volts between the signal circuits listed below and ground. Express vent terminal 1 Sunroof close terminal 2 Vent open terminal 4 Vent close terminal 6 Sunroof express terminal 7 Sunroof open terminal 8 If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the sunroof control module. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the sunroof control module.
8. Ignition OFF, connect the harness connector at the sunroof switch.
9. Disconnect the X2 harness connector at the sunroof motor.
10. Connect a test lamp between the control circuit terminals A and B.
11. Press and release any one of the sunroof switches. The test lamp should illuminate. If the test lamp does not illuminate, test both control circuits for a short to ground or an open/high resistance. If the circuits test normal, replace the sunroof control module.
12. If all circuits test normal, test or replace the sunroof motor.

Power Sunroof Express Feature Malfunction

1. Ignition OFF, disconnect the harness connector at the sunroof switch.
2. Ignition ON, with the sunroof in the closed position, connect a 3A fused jumper wires between both signal circuits listed below and ground for less than 1 second. The sunroof should express open. Terminal 7 Terminal 8 If the sunroof did not express open, test the signal circuit for a short to voltage or an open high resistance. If the circuit tests normal, replace the sunroof motor/actuator.
3. Ignition ON, with the sunroof in the closed position, connect a 3A fused jumper wire between both signal circuits listed below and ground for less than 1 second. The roof should express open to the vent position. Terminal 1 Terminal 4 If the roof did not express open to the vent position, test the signal circuit for a short to voltage or an open high resistance. If the circuit tests normal, replace the sunroof motor/actuator.
4. If all circuits test normal, test or replace the sunroof switch.

Power Sunroof Motor Limit Switch Test

1. Ignition OFF, disconnect the X1 harness connector at the sunroof motor.
2. Test for less than 5 ohms of resistance between the low reference circuit terminal 3 and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the sunroof control module.
3. Ignition ON, test for 4.8-5.2 volts between the signal circuit terminal 1 and ground. If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the sunroof control module. If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the sunroof control module.
4. If all circuits test normal, test or replace the sunroof motor.

Component Testing

Sunroof Switch

1. Ignition OFF, disconnect the harness connector at the sunroof switch.
2. Test for infinite resistance between the switch terminals listed below and the low reference terminal 5 with the switch in the open position. Vent express terminal 1 Roof close terminal 2 Vent open terminal 4 Vent close terminal 6 Roof express terminal 7 Roof open terminal 8 If less than the specified range, replace the sunroof switch.
3. Test for less than 3 ohms between the switch terminals listed below and the low reference terminal 5 while pressing the appropriate switch. Vent express terminal 1 Roof close terminal 2 Vent open terminal 4 Vent close terminal 6 Roof express terminal 7 Roof open terminal 8 If greater than the specified range, replace the sunroof switch.

Sunroof Motor Limit Switch

1. Ignition ON, press the sunroof switch to move the sunroof to the full closed position.
2. Ignition OFF, disconnect the X1 harness connector at the sunroof motor.
3. Test for less than 5 ohms between the signal terminal 1 and the low reference terminal 3. If greater than the specified range, replace the sunroof motor.
4. Ignition ON, press the sunroof switch to move the sunroof to the open or vent position.
5. Ignition OFF, test for infinite resistance between the signal terminal 1 and the low reference terminal 3. If not the specified value, replace the sunroof motor.

Repair Procedures

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Sunroof Switch Replacement»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system)
2. «Sunroof Motor/Actuator Replacement»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system)
3. «Control Module References»(/cadillac/dts/i-2005-2011/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for sunroof control module replacement, setup, and programming

Removal Procedure

1. Cycle the sunroof window to the rear.
2. Push down on the right front side of the air deflector.
3. While holding the right side down, complete the following steps: Push the left front side of the air deflector towards the right side. Pull up on the left side until the lower tab (1) clears the roof opening (2).
4. Swing the air deflector (1) in a vertical position, slide rearward, in order to disengage the air deflector from the hooks (2).
5. Remove the air deflector (1) from the sunroof module.

Scheme 2

1. Engage the rear of the air deflector (1) into the side hooks (2) on the sunroof module (3).
2. Position the air deflector forward.
3. Push the right side of the air deflector down into the roof opening.
4. While holding the right side down; complete the following steps: Push the left front side of the air deflector towards the right side. Pull up on the left side until the lower tab (1) clears the roof opening fit.
5. Push the left front side of the air deflector inwards and down so the tab clears the roof opening.
6. Close the sunroof window.

Sunroof Drain Inspection & Cleaning

A drain trough encircles the sliding window panel and leads to the drain hoses. The drain hoses are located at each corner of the sunroof module assembly. The two front drain hoses route down the windshield pillars. The two rear drain hoses route down the rear sail and the quarter panels.

If you encounter a wet headliner or other water leak, inspect the following areas for the source of the leak

1. The windshield
2. The rear window

Verify that the drainage system is not plugged or restricted. Use the following procedure

1. Using a one pint container, pour water into the drain trough with the sunroof window open.
2. Inspect for water drainage through the drain hoses exiting the wheel house areas.
3. If the water flow is restricted, use a low volume of compressed air in order to clear the drain system. Do not blow the drain hose away from the housing drain spout.
4. Retest the system.

If water drips from the headliner above the door, lower the headliner as required in order to inspect for a proper drain tube connection. If necessary, install new tie wraps onto the drain spouts of the sunroof module assembly.

1. Lower the headliner. Refer to «Headlining Trim Panel Replacement»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#floor-coverings-headliners) .
2. Remove the sunroof control module. Refer to «Sunroof Control Module Replacement»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system) .
3. Remove the tape (5) securing the electrical harness to the sunroof motor/actuator (4).
4. Disconnect the electrical connectors (1, 3) at the sunroof motor/actuator.
5. Cut the tie straps securing the electrical harness to the drive cable tube. NOTE: Note the correct routing of the electrical wiring. Failure to reinstall the wiring properly could result in damage to the wiring.
6. Disconnect the electrical harness from the rear sunroof drain hose retainers.
7. Disconnect the electrical connector at the main body electrical harness at the rear edge of the rear shelf panel.
8. Remove the electrical harness from the vehicle.

Installation Procedure

1. Connect the electrical connector to the main body electrical harness at the rear shelf panel.
2. Secure the electrical harness to the clips on the rear drain hose.
3. Connect the electrical connectors (1, 3) to the sunroof motor/actuator (4).
4. Secure the harness to the sunroof motor/actuator with new electrical tape (5).
5. Connect the electrical connectors to the sunroof control module.
6. Install the control module to the sunroof module assembly.
7. Ensure the locking tabs are secure.
8. Secure the electrical harness to the drive cable tube with 2 new tie wrap.
9. Verify the operation of the sunroof.
10. Install the headliner. Refer to «Headlining Trim Panel Replacement»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#floor-coverings-headliners) .

1. Lower the headliner in order to access the drain hose connections. Refer to «Headlining Trim Panel Replacement»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#floor-coverings-headliners) .
2. Cut the tie wraps from the drain hoses.
3. Disconnect the front drain hoses from the sunroof module assembly.
4. Remove the interior moldings in order to access the drain hose retaining clips. Refer to «Windshield Pillar Garnish Molding Replacement»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#interior-trim-and-paneling) .
5. Remove the tape from the drain hoses on the windshield pillars.
6. Remove the front inner wheelhouse liners. Refer to «Front Wheelhouse Liner Replacement»(/cadillac/dts/i-2005-2011/remont/frames-subframes-crossmembers/#frame-and-underbody) .
7. Remove the front drain hose from the inner wheelhouse of the vehicle.

1. Install the drain hoses up through the inner wheel house to the windshield pillars.
2. Tape the front drain hoses into position on the windshield pillars.
3. Install the front wheelhouse liner. Refer to «Front Wheelhouse Liner Replacement»(/cadillac/dts/i-2005-2011/remont/frames-subframes-crossmembers/#frame-and-underbody) .
4. Secure the drain hoses to the sunroof module assembly drain spouts with new tie wraps.
5. Install the interior moldings. Refer to «Windshield Pillar Garnish Molding Replacement»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#interior-trim-and-paneling) .
6. Install the headliner. Refer to «Headlining Trim Panel Replacement»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#floor-coverings-headliners) .

1. Lower the headliner in order to access the rear drain hose connections. Refer to «Headlining Trim Panel Replacement»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#floor-coverings-headliners) .
2. Cut the tie wraps from the rear drain hoses.
3. Disconnect the drain hoses from the sunroof module assembly drain spouts.
4. Remove the upper portion of the rear drain hoses from the retaining clips.
5. Remove the RH rear compartment trim. Refer to «Rear Compartment Side Trim Replacement - Right Side»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#interior-trim-and-paneling) .
6. Remove the lower portion of the rear drain hoses from the retaining clips.
7. Remove the drain hose from the vehicle.

1. Position the rear drain hose up through the rear shelf panel.
2. Clip the lower portion of the rear drain hoses into position.
3. Install the rear compartment trim. Refer to «Rear Compartment Side Trim Replacement - Right Side»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#interior-trim-and-paneling) .
4. Secure the upper portion of the rear drain hoses into position.
5. Secure the drain hoses to the sunroof module assembly drain spouts with new tie wraps.
6. Install the headliner to the roof. Refer to «Headlining Trim Panel Replacement»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#floor-coverings-headliners) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/dts/i-2005-2011/remont/airbag/#supplemental-inflatable-restraint-system__sir-disabling-enabling) .
2. Remove the passenger side rear assist handle. Refer to «Assist Handle Replacement»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#interior-trim-and-paneling) .
3. Remove the rear seat cushion. Refer to «Rear Seat Cushion Replacement»(/cadillac/dts/i-2005-2011/remont/seats/#seat-hardware-seat-trim-and-upholstery) .
4. Remove the rear seat back. Refer to «Rear Seat Back Replacement»(/cadillac/dts/i-2005-2011/remont/seats/#seat-hardware-seat-trim-and-upholstery) .
5. Remove the rear passenger seat belt retractor (4). Refer to «Rear Seat Belt Retractor Replacement»(/cadillac/dts/i-2005-2011/remont/restraints-control-systems/#seat-belt-system) .
6. Remove the passenger side rear sail panel. Refer to «Sail Panel Replacement»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#interior-trim-and-paneling) .
7. Carefully pull the upper center trim panel inward in order to allow clearance for the headliner.
8. Carefully pull the passenger side of the headliner downward in order to release the center and rearward headliner roof magnets.
9. Reach inward between the headliner and roof panel in order to release the sunroof control module clip (3) securing the control module (1) to the sunroof module assembly (2).
10. With the clip (3) depressed, slide the control module toward the sunroof motor/actuator.
11. Disconnect the electrical connectors.
12. Remove the sunroof control module from the vehicle.

1. Connect the electrical connectors to the sunroof control module.
2. Install the sunroof control module tabs (2) into the slots (3) located on the sunroof module assembly.
3. Slide the sunroof control module (1) away from the sunroof motor/actuator until the sunroof control module is fully engaged to the sunroof module assembly.
4. Reposition the headliner to the center and rearward roof magnets.
5. Install the passenger side sail panel. Refer to «Sail Panel Replacement»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#interior-trim-and-paneling) .
6. Install the passenger side rear seat belt retractor (4). Refer to «Rear Seat Belt Retractor Replacement»(/cadillac/dts/i-2005-2011/remont/restraints-control-systems/#seat-belt-system) .
7. Install the rear seat back. Refer to «Rear Seat Back Replacement»(/cadillac/dts/i-2005-2011/remont/seats/#seat-hardware-seat-trim-and-upholstery) .
8. Install the rear seat cushion. Refer to «Rear Seat Cushion Replacement»(/cadillac/dts/i-2005-2011/remont/seats/#seat-hardware-seat-trim-and-upholstery) .
9. Align the upper center trim panel retainer, push inward in order to secure.
10. Reposition the passenger rear door opening weatherstrip seal.
11. Install the passenger side rear assist handle. Refer to «Assist Handle Replacement»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#interior-trim-and-paneling) .
12. Enable the SIR system. Refer to «SIR Disabling and Enabling»(/cadillac/dts/i-2005-2011/remont/airbag/#supplemental-inflatable-restraint-system__sir-disabling-enabling) .
13. Close the passenger rear door.

Tools Required

J 44363 Sunroof Alignment Pins

1. Remove the sunroof window. Refer to «Sunroof Window Replacement»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system) .
2. Remove the sunshade panel. Refer to «Sunroof Sunshade Replacement»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system) .
3. Lower the headliner. Refer to «Headlining Trim Panel Replacement»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#floor-coverings-headliners) .
4. Disconnect the electrical harness.
5. Cut the tie wraps from the drain hoses on the drain spouts.
6. Disconnect the drain hoses from the sunroof module assembly.
7. Remove the sunroof module assembly to the roof bolts (1).
8. Remove the sunroof module assembly from the vehicle.

1. Position the sunroof module assembly to the roof opening.
2. Hand start the sunroof module assembly bolts (1) into the roof.
3. Insert the J 44363 into the sunroof module alignment holes (2).
4. Secure the sunroof module assembly to the roof. Tighten: Tighten the sunroof module bolts (1) to 9 N.m (80 lb in).
5. Remove the J 44363 .
6. Connect the drain hoses to the drain spouts on the sunroof module.
7. Secure the drain hoses to the sunroof module with new tie wraps.
8. Connect the electrical harness to the sunroof module assembly.
9. Install the sunshade. Refer to «Sunroof Sunshade Replacement»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system) .
10. Install the sunroof window and loosely install the screws. Refer to «Sunroof Window Replacement»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system) .
11. Adjust the sunroof window. Refer to «Sunroof Window Height and Opening Fit Adjustment»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system__sunroof-window-height-opening-fit) .
12. Raise and install the headliner. Refer to «Headlining Trim Panel Replacement»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#floor-coverings-headliners) .

The sunroof window must be in the full closed position.

1. If possible, close the sunroof window before removing the sunroof motor/actuator.
2. Lower the headliner at the rear in order to gain access to the sunroof motor/actuator. Refer to «Headlining Trim Panel Replacement»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#floor-coverings-headliners) .
3. Disconnect the electrical connectors (3) from the sunroof motor/actuator (1).
4. Remove the bolts (5) attaching the sunroof motor/actuator (1) to the sunroof module assembly (2).
5. Remove the sunroof motor/actuator from the sunroof module assembly (2).

1. Manually move the sunroof window to the full closed position.
2. Install the sunroof motor/actuator (1) to the sunroof module assembly (2).
3. Install the bolts (5) attaching the sunroof motor/actuator to the sunroof module assembly. Tighten: Tighten the bolts to 5 N.m (44 lb in).
4. Connect the electrical connectors (3) to the sunroof motor/actuator (1).
5. Check the sunroof window to the roof opening fit. Refer to «Sunroof Window Height and Opening Fit Adjustment»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system__sunroof-window-height-opening-fit) .
6. Install the headliner. Refer to «Headlining Trim Panel Replacement»(/cadillac/dts/i-2005-2011/remont/exteriorinterior-trim/#floor-coverings-headliners) .

Sunroof Motor/Actuator Synchronization

1. Remove the sunroof window.
2. Slide the sunshade (4) forward to the closed position.
3. Push the spring retainer clips (1) inward in order to disengage the clips from the track (3) using an upwards lifting motion.
4. Remove the sunshade (2) from the sunroof module.

1. Engage the sunshade (2) by positioning the spring clips (1) into the track (3).
2. Push the spring retainer clips (1) inward on the opposite side of the sunshade (2) to engage them into the track.
3. Slide the sunshade back and forth to ensure proper operation.
4. Slide the sunshade to the half closed position.
5. Install the sunroof window.

Scheme 3

Sunroof Track Timing/Synchronization

1. Before retiming the module, the actuator /motor must be removed. Refer to «Sunroof Motor/Actuator Replacement»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system) .
2. Remove the sunroof window. Refer to «Sunroof Window Replacement»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system) .
3. Fabricate a gage (2) 46.8 +/- 0.5 mm (1.84 in) wide (A). A piece of thick paper will work.
4. Set the gage into the track near the rear of the opening between the move drive slide (1) and the bracket.
5. Move the drive slide fore or aft in order to get the proper setting.
6. Repeat steps 3 and 4 for the other side.
7. Install the sunroof window. Refer to «Sunroof Window Replacement»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system) .
8. Install the sunroof actuator. Refer to «Sunroof Motor/Actuator Replacement»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system) .
9. Operate the sunroof through all functions to ensure proper operation.

Sunroof Window Height & Opening Fit Adjustment

1. Cycle the sunroof window from the full open to closed position.
2. Loosen the 4 adjusting screws (1).
3. There are 2 adjusting screws on each side of the sunroof window.
4. Center the window front to rear in the opening.
5. Adjust the front of the sunroof window (2) from flush to 1 mm (0.04 in) (1) below the top surface of the roof panel (3). Tighten: Tighten the front sunroof window adjustment screws to 5 N.m (44 lb in).
6. Adjust the rear of the sunroof window (2) from flush to 1 mm (0.04 in) (1) above the top surface of the roof panel (3). Tighten: Tighten the rear sunroof window adjustment screws to 5 N.m (44 lb in).
7. Cycle the sunroof window through all of the positions.
8. Verify the sunroof window fore/aft adjustments.
9. Verify the front and rear height adjustment.
10. Readjust the sunroof window, if necessary.

1. Open the sunshade.
2. Remove the window panel screws (1) on both sides. IMPORTANT: If operating the sunroof without the window, refer to «Sunroof Air Deflector Replacement»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system) . Remove the sunroof window, being careful not to scratch the roof surface.

1. Position the sunroof window (3) into the opening.
2. Install the sunroof window screws (1). Do not tighten the screws.
3. Adjust the sunroof window. Refer to «Sunroof Window Height and Opening Fit Adjustment»(/cadillac/dts/i-2005-2011/remont/sun-rooft-topconvertible-top/#sunroof-system__sunroof-window-height-opening-fit) .

1. Sunroof control module
2. Sunroof motor, with limit switch
3. Sunroof switches
4. Sunroof glass
5. Rail and track assembly upon which the sunroof glass rides
6. S/ROOF Fuse 20-A
7. Ground G403

The sunroof module contains the logic for the opening and the closing of the sunroof. The sunroof motor assembly contains the reversible DC drive motor, the gear train, and the soft stop limit switch.

The sunroof module determines the sunroof motor direction based on inputs received from the overhead console sunroof switches. When the ignition switch is in the ON position or when retained accessory power (RAP) is active, voltage is applied to the sunroof module via the RAP relay. For a description and operation of the RAP system, refer to Retained Accessory Power (RAP) Description and Operation . The sunroof module controls the sunroof motor direction by changing the polarity of the applied voltage. The sunroof module remembers the sunroof position whenever the ignition switch is turned to the OFF position. The limit switch is used as an input to the sunroof module to indicate that the glass is fully closed, or in the comfort stop positions. The limit switch is grounded when the sunroof glass is in the fully closed or comfort stop positions, otherwise it is open.

Express Open

The EXPRESS OPEN mode is initiated by momentarily moving the sunroof slide switch (ROOF) rearward to the second position (EXPRESS OPEN). This applies a ground from the sunroof switch low reference circuit through both the sunroof switch open signal and the sunroof switch express signal circuits to the sunroof module. The sunroof module will then control voltage to the control circuits of the sunroof motor. The sunroof motor will run until the limit switch contacts are closed. The closing of the limit switch will apply the sunroof limit switch low reference circuit to the sunroof limit switch soft stop signal circuit to the sunroof module, indicating the comfort stop position has been reached. The comfort stop position is a predetermined position that the sunroof glass will open to allowing minimal wind noise. If the sunroof slide switch is pressed again, the sunroof motor will run until a mechanical stop is met in the sunroof track, indicating the fully open position. Also, the sunroof module will revert back to manual operation if the switch is not released within 1 second. As the sunroof is expressing open the wind deflector will raise upward and the sunshade will slide along with the glass.

Slide Close

The SLIDE CLOSE mode is initiated by moving and holding the sunroof slide switch (ROOF) forward. This applies a ground provided from the sunroof limit switch low reference circuit to the sunroof switch close vent signal input of the sunroof module. The sunroof module controls voltage to the control circuits of the sunroof motor. The sunroof motor will run until the limit switch contacts are closed. The closing of the limit switch will apply the sunroof limit switch low reference circuit to the sunroof limit switch soft stop signal circuit to the sunroof module, indicating the flush closed position has been reached. As the sunroof is approaching the close position the sunroof glass will force the wind deflector downward. The sunshade will have to be manually slid closed.

Slide Open

The SLIDE OPEN mode is initiated by moving and holding the sunroof slide switch (ROOF) rearward to the first position. This applies a ground from the sunroof switch low reference circuit through the sunroof switch open signal circuit to the sunroof module. The sunroof module controls voltage to the control circuits of the sunroof motor. The sunroof motor will run until the a mechanical stop is met in the sunroof track, indicating the fully open position. As the sunroof is opening the wind deflector will raise upward and the sunshade will slide along with the glass.

Vent Open

The VENT OPEN mode is initiated by pressing and holding the rear portion of the sunroof vent switch (VENT). This applies a ground from the sunroof switch low reference circuit through the sunroof switch open vent signal circuit to the sunroof module. The sunroof module controls voltage to the control circuits of the sunroof motor. The sunroof motor will run until a mechanical stop is met in the sunroof track, indicating the vent open position. The sunshade will need to be manually slid open.

Vent Close

The VENT CLOSE mode is initiated by pressing and holding the forward portion of the sunroof vent switch (VENT). This applies a ground from the sunroof switch low reference circuit through the sunroof switch close vent signal circuit to the sunroof module. The sunroof module controls voltage to the control circuits of the sunroof motor. The sunroof motor will run until the limit switch contacts are closed. The closing of the limit switch will apply the sunroof limit switch low reference circuit to the sunroof limit switch soft stop signal circuit to the sunroof module, indicating the flush closed position has been reached. The sunshade will need to be manually slid closed.

Limit Switch

The limit switch will only signal the sunroof module when the sunroof glass reaches the flush closed or the comfort stop positions, all other positions the switch is open. When the sunroof limit switch closes, the sunroof limit switch low reference circuit will be applied to the sunroof limit switch soft stop signal circuit to the sunroof module.

Stuck Switch

The sunroof system has a sunroof stuck switch feature that will allow a closing due to one of the sunroof switch signal circuits being shorted to ground or a faulty sunroof switch. If either the sunroof switch open, open vent or express signal circuits should become grounded, that sunroof signal circuit will input a low signal to the sunroof module. This will drive the sunroof window to the requested position. If the same signal circuit continues to remain low, as if a stuck sunroof switch or a short to ground, the sunroof module will ignore any other input request for 1 minute. After 1 minute, a request to close the sunroof window will be granted once the sunroof switch is pressed to the close position. The sunroof system will become inoperative once in the close position, until the ignition is cycled back on.

See also:
• Diagnostic System Check - Vehicle
• Checking Aftermarket Accessories
• Testing for Intermittent Conditions and Poor Connections
• Retained Accessory Power (RAP) Description and Operation
• Strategy Based Diagnosis
• Diagnostic Procedure Instructions
• Component Connector End Views
• Circuit Testing
• Connector Repairs
• Wiring Repairs
• Control Module References
• Diagnostic Repair Verification
• Headlining Trim Panel Replacement
• Windshield Pillar Garnish Molding Replacement
• Front Wheelhouse Liner Replacement
• SIR Caution
• SIR Disabling and Enabling
• Rear Seat Cushion Replacement
• Rear Seat Belt Retractor Replacement
• Fastener Notice
• Roof Console Replacement
• Sunroof Description and Operation
• Power Sunroof Malfunction
• Sunroof Window Height and Opening Fit Adjustment
• Sunroof Track Timing/Synchronization
• Fastener Tightening Specifications