Nissan Maxima Service and Repair Manual: Removal and installation

SUNROOF UNIT ASSEMBLY

Inspection

WIND DEFLECTOR

1. Open glass lid assembly fully.
2. Visually check for proper installation, damaged/deteriorated components, or foreign objects within mechanism.

   Correct as required for smooth operation.

3. Check for grease at the wind deflector arm (1) and pivot areas. If necessary, apply a sufficient amount of grease for non-binding operation.
   :Front

4. Check that the wind deflector (1) moves freely within the sunroof unit assembly while manually pressing down and releasing. If a malfunction is detected, remove the sunroof unit assembly and visually inspect. If damage is found, replace either wind deflector (1) or sunroof unit assembly as required.
   :Front

LINK AND WIRE ASSEMBLY

NOTE: Before replacing a suspect part, make sure it is the source of noise being experienced.

1. Check link to determine if coating film has peeled off excessively enough that substrate is visible. Check also to determine if link is the source of noise. Replace as necessary.
2. Visually check to determine if a sufficient amount of grease has been applied to wire or rail groove. If not, add grease as required.
3. Check wire for any damage or deterioration. If any damage is found, replace sunroof unit assembly.

WEATHERSTRIP

1. Visually check weatherstrip for damage, deterioration, or deformation.

• Open glass lid assembly partially to inspect front edge of weatherstrip.
• Tilt up glass lid assembly fully to inspect sides and rear edge of weatherstrip.

  If any area of the weatherstrip is found to be damaged, replace the glass lid assembly. Refer to RF-72, "Removal and Installation".

2. Check for leakage around glass lid assembly.

• Close glass lid assembly.
• Pour water around surface to determine area of concern.

• For gaps or misalignment, adjust glass lid assembly to specifications. Refer to ADJUSTMENT in this section.
• For damaged sealing surfaces, either replace glass lid assembly RF-72, "Removal and Installation", or repair the panel.

DRAIN HOSES

1. Drain hose front (RH)
2. Drain hose front (LH)
3. Drain hose rear (LH)
4. Drain hose rear (RH)
5. Sunroof unit assembly
6. Fascia
7. Seal
8. Fender
9. Drain hose

Front

1. Remove the headlining. Refer to INT-33, "Removal and Installation".
2. Visually check drain hoses for:

• Proper connection at sunroof unit assembly drain hose connector(s).
• Damage, pinch, cracks, deterioration.
• Proper fastening and routing on body panels.

3. Pour water through drain hoses to determine watertight performance.

   If damaged or leaking portions in any drain hose is found, replace entire drain hose as necessary.

ADJUSTMENT

CAUTION:

• Always work with a helper.
• Handle glass lid assembly with care to prevent damage.

NOTE:

• For easier and more accurate installation, always mark each point before removal.
• After any adjustment, check sunroof operation and glass lid assembly alignment

Inspect then measure the gap and surface height difference between the roof panel and glass lid assembly; compare to specifications. Determine which procedure to follow based on results of measurements.

1. Roof panel
2. Glass lid assembly

Gap adjustment (Front and Rear)

1. Open sunshade assembly (1).
   : Front
2. Tilt glass lid assembly up, then release side trim cover (2) and set aside.
3. Loosen glass lid assembly bolts (A) (2 each on left and right sides), then tilt glass lid assembly down.
4. Manually adjust glass lid assembly from outside of vehicle so gaps A-A and C-C are within specifications. NOTE: Temporarily snug glass lid assembly bolts to prevent movement between each adjustment.
5. Tilt glass lid assembly up and down several times using sunroof switch to check that it operates smoothly.
6. Tilt glass lid assembly up and tighten bolts to specification.

   NOTE: First tighten left front bolt, then right rear bolt on glass lid assembly to prevent uneven torque while tightening remaining bolts.

7. Attach side trim cover, then tilt glass lid assembly down.

Gap Adjustment (Sides)

1. Remove headlining. Refer to INT-33, "Removal and Installation".
2. Loosen sunroof unit assembly and sunroof side bracket bolts.
3. Carefully slide sunroof unit assembly side to side or add shims until gap is within specifications. NOTE: Temporarily snug sunroof unit assembly bolts to prevent movement between each adjustment.
4. Tilt glass lid assembly up and down several times using sunroof switch to check that it operates smoothly.
5. Tighten sunroof unit assembly and sunroof side bracket bolts.

   NOTE: First tighten left front sunroof unit assembly bolt, then right rear to prevent uneven torque while tightening remaining bolts.

6. Install headlining. Refer to INT-33, "Removal and Installation".

Height Adjustment

1. Tilt glass lid assembly up and down several times using sunroof switch to check that it operates smoothly.
2. Check height difference between roof surface and glass lid assembly surface, then compare to specifications.
3. If necessary, adjust height difference by using the following procedure.

• Loosen glass lid assembly bolts.
• Manually raise/lower glass lid assembly until height difference is within specification.

NOTE: If necessary, shims may be added between sunroof unit assembly and roof to increase adjustment range. Refer to RF-72, "Removal and Installation".

Temporarily snug sunroof unit assembly bolts to prevent movement between each adjustment.

• Tilt glass lid assembly up and down several times using sunroof switch to check that it operates smoothly.
• Tighten glass lid assembly and sunroof side bracket bolts.

  NOTE: First tighten left front bolt, then right rear bolt on glass lid assembly to prevent uneven torque while tightening remaining bolts.

• After any adjustment, check sunroof operation and glass lid assembly alignment.

Exploded View

1. Glass lid assembly
2. Sunshade
3. Wind deflector
4. Sunroof motor assembly
5. Sunroof side bracket
6. Drain hose connector
7. Sunshade stopper
8. Sunroof unit assembly
1.  Bolt
2.  Screw
3.  Nut
   Front

Removal and Installation

CAUTION:

• After installing either sunroof unit assembly or glass lid assembly, check gap/height adjustments and operation to make sure there is no malfunction.
• Always work with a helper.
• Handle glass lid assembly with care to prevent damage.
• When taking sunroof unit out, use shop cloths to protect the seats and trim from damage.

SUNROOF UNIT ASSEMBLY

Removal

1. Close glass lid assembly.
2. Remove headlining. Refer to INT-33, "Removal and Installation".
3. Disconnect drain hoses.
4. Remove screws (A), then pull sunroof switch bracket (1) away from sunroof unit assembly (2).
   Front
5. Disconnect the harness connector from the sunroof motor.

6. Remove bolts on the front end and side rails of the sunroof unit assembly.
7. Remove front sunroof side bracket bolts.
8. Remove rear sunroof side bracket bolts and remove sunroof unit assembly from roof panel.
9. Remove sunroof unit assembly through the passenger compartment while being careful not to damage the seats and trim.

Installation

1. Loosely tighten the rear sunroof side bracket bolts to the sunroof unit assembly side rails.
2. Bring sunroof unit into passenger compartment and loosely tighten rear sunroof side bracket bolts to roof panel while supporting front.
3. Align the sunroof unit assembly front end rail and side rails with the locator pins, then loosely tighten the bolts.
4. Install remaining sunroof side brackets and loosely tighten bolts.
5. Tighten the sunroof unit assembly front end and side rail bolts diagonally to the specified torque.
6. Tighten the front sunroof side bracket bolts at the vehicle side first, then at the side rail end.
7. Tighten the rear sunroof side bracket bolts at the vehicle side first, then at the side rail end.
8. Connect the harness connector to the sunroof motor.
9. Install sunroof switch bracket.
10. Connect drain hoses.
11. Install headlining. Refer to INT-33, "Removal and Installation".

GLASS LID ASSEMBLY

Removal

1. Open sunshade (1), then close glass lid assembly.
   Front
2. Slide the side trim covers (2) (LH/RH) inward, then release them from the glass lid assembly inside edge and set aside.
3. Remove the bolts (A) and glass lid assembly from sunroof unit assembly.

Installation

1. Position glass lid assembly to sunroof unit assembly.
2. Tighten glass lid assembly bolts to specification.

NOTE: First tighten left front bolt, then right rear bolt on glass lid assembly to prevent uneven torque while tightening remaining bolts.

3. Slide side trim covers onto inside edge of glass lid assembly.
4. After installation, check sunroof operation and glass lid assembly alignmen

SUNSHADE

Removal

1. Remove sunroof unit assembly. Refer to RF-72, "Exploded View".
2. Remove glass lid assembly. Refer to RF-72, "Removal and Installation".
3. Remove the sunshade stoppers (1) (LH/RH) from the sunroof unit assembly side rails (2).
   Front
4. Slide sunshade rearward past sunroof unit assembly side rail ends to remove.

Installation

Installation is in the reverse order of removal.

SUNROOF MOTOR ASSEMBLY

Removal

1. Close glass lid assembly.
2. Remove front room/map lamp assembly from headlining (4).

   Refer to INL-84, "Removal and Installation".
   Front

3. Remove sunroof motor assembly screws (A).
4. Disconnect harness connector (2) and remove sunroof motor assembly (1) from sunroof unit assembly front end rail.

CAUTION: Do not run the removed sunroof motor assembly as a single unit.

Installation

1. Move sunroof motor assembly laterally little by little so that the gear is completely engaged into the wire on the sunroof unit assembly, and the mounting surfaces become parallel. Install the sunroof motor assembly screws, and tighten to the specified torque.

   CAUTION: Before installing the motor, be sure to place the link and wire assembly in the symmetrical and fully closed position.

   NOTE: If necessary, insert a suitable tool into the drive key (3) and rotate right or left slightly to assist in complete sunroof motor gear alignment. Remainder of installation is in the reverse order of removal.

2. Synchronize sunroof motor with sunroof unit assembly.