Honda Accord/Civic/Prelude 1973-1983 Repair Guide

Electric Sunroofs

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The sunroof is operated by a switch, which is usually located on the left side of the instrument panel. The system is consists of the sunroof switch, motor drive cables and relay(s), which are located in a fuse/relay junction block in the engine compartment.

Several fuses, located in a fuse/relay junction block in the engine compartment and dash fuse box, are used to power/protect the system. The sunroof can be closed manually, (should it be necessary) by removing the headliner plug, insert the handle and turn the gear to close the sunroof.

The sunroof assembly is equipped with water drain tubes. It is important to keep these drain tubes open. So it is recommended to blow compressed air through the drain tubes at regular intervals, in order to keep the drain tubes clear.

ADJUSTMENTS



Sunroof Glass

The roof molding should be even with the glass weather strip, to within 1.0mm plus or minus 1.5mm all the way around. If it is not, slide the sunshade back and follow this procedure.

  1. Pry the plug out of the glass mount bracket cover, remove the screw, then slide the cover off to the rear.
  2.  
  3. Loosen the mount bracket nuts and install shims between the glass frame and bracket. Repeat this on the other side if necessary.
  4.  

Side Clearance

If the glass weather strip fits too tightly against the roof molding on either side when closed, slide the sunshade back and follow this procedure.

  1. Pry the plug out of each mount bracket cover, remove the screw, then slide the cover off to the rear.
  2.  
  3. Loosen all 8 mount bracket nuts. Move the glass right or left as necessary and tighten the mount bracket nuts.
  4.  

Rear Edge Closing

Open the glass approximately 1 ft., then close it to check where the rear edge begins to rise. If it rises too soon and seat too tightly against the roof molding or too late and does not seat tightly enough, adjust as follows:

  1. Open the glass fully. Remove the rail covers from both sides and loosen the lift-up guide screws.
  2.  
  3. Move the guide forward or backward, then tighten the screws and recheck the roof closing. The guides have notches 1.5mm each and can be adjusted 2 notches forward or backward.
  4.  

REMOVAL & INSTALLATION



Sunroof Glass and Sunshade
  1. Slide the sunshade all the way back. Pry the plug out of each mount bracket cover, remove the screw, then slide the cover off to the rear.
  2.  
  3. Close the glass fully. Remove the nuts from the front and rear mounts on both sides.
  4.  
  5. Remove the glass by lifting it up and pulling it towards the front of the vehicle. Once the glass is removed, pull the sunshade out. When removing the sunshade, it is correct to bend the sunshade slightly to aid in the removal.
  6.  
  7. Installation is the reverse order of the removal procedure. Check operation of assembly.
  8.  

Sunroof Motor, Drain Tube and Frame

See Figure 1

  1. Remove the headliner from inside of the vehicle.
  2.  
  3. Remove the sunroof motor by removing 2 bolts and 3 nuts from the bottom of the motor mount plate. Disconnect the motor wire harness at the connector and remove the motor.
  4.  
  5. Slide back the drain tube clamps and remove the drain tubes. Remove the 11 mounting bolts from the sunroof frame and remove the frame from the vehicle.
  6.  
  7. To install, insert the frame's rear pins into the body holes, then install the rest of the assembly in the reverse order of the removal procedure.
  8.  

Before installing the sunroof motor, measure the effort required to close the sliding panel using a suitable spring scale. If the load is over 22 lbs., check the side clearance and the glass height adjustment. Be sure when using the spring scale to protect the leading edge of the sunroof with a shop rag.



Click image to see an enlarged view

Fig. Fig. 1: Sunroof and frame assembly

Sunroof Cable Replacement

With the sun roof out of the vehicle, remove the guide rail mounting nuts, lift off the guide rails and remove the cables with the rear mounts attached. Be sure to fill the groove in each grommet with a suitable sealant and apply a suitable grease to the inner cable.

Wind Deflector

A gap between the deflector seal and roof molding will cause wind noise when driving at high speed with the roof opening.

  1. Open the sunroof and pry the rail covers off of both sides. Loosen the deflector mounting nuts. The wind deflector can be adjusted 2.0mm forward or backward.
  2.  
  3. Adjust the deflector forward or backward so that the edge of its seal touches the roof molding evenly.
  4.  
  5. The height of the deflector when opened can not be adjusted. If it is damaged or deformed, replace it.
  6.  

Sunroof Rear Mount Bracket Disassembly
  1. Remove the side guides from the rear mount brackets. It is advisable to replace the guides with new ones whenever they are disassembled.
  2.  
  3. Pry the E-clip off of the pin and remove the rear mount bracket from the cable.
  4.  
  5. Assembly is the reverse order of the disassembly procedure.
  6.  

COMPONENT TESTING



The terminal identification for the sunroof relay should be marked above each terminal on the relay.

Sunroof Relay
5-PIN RELAY
  1. Remove relay from dash relay holder.
  2.  
  3. Check for continuity between terminals B and C .
  4.  
  5. Apply battery voltage to terminal E and ground terminal F .
  6.  
  7. Check for continuity between terminals A and C .
  8.  
  9. If either test fails, replace relay.
  10.  

4-PIN RELAY
  1. Remove relay from dash relay holder.
  2.  
  3. There should be no continuity between terminals A and B .
  4.  
  5. Apply battery voltage to terminal C and ground terminal D .
  6.  
  7. There should be continuity between terminals A and B .
  8.  
  9. If either test fails, replace relay.
  10.  

Sunroof Closing Force Check (With The Motor Installed)
  1. After installing all removed parts, using a second person, have them hold the switch to close the sunroof while measuring the force required to stop the sunroof with a suitable spring scale.
  2.  
  3. Read the force on the scale as soon as the glass stops moving, then immediately release the switch and spring scale. The closing force should be 44-56 lbs.
  4.  
  5. If the force required to stop the sunroof is not within specifications, adjust it, by turning the sunroof motor clutch adjusting nut. Turn clockwise to increase the force and counterclockwise to decrease the force.
  6.  
  7. After the proper adjustment has been made, install a new lockwasher and bend it against the flat on the adjusting nut.
  8.  

 
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