roof the ignition switch must be in the Accessory or
On/Run position. Both switches are a rocker style
design that open or close the sunroof. When pressing
and releasing the open button once, the sunroof will
express open to the comfort stop and the wind deflec-
tor will raise. If the button is pressed a second time,
the sunroof will continue to open to full travel unless
the button is released, at which time it will stop in
that position. Pressing and holding the close button
will close the sunroof. If the close button is released
before the glass fully closes, the sunroof will stop in
that position. The vent switch operates in a similar
manor. The sunroof will also operate for up to fifteen
minutes after the ignition key is turned off for cus-
tomer comfort and convenance while parking.

SUNROOF

23 - 159

Fig. 1 SUN ROOF ASSEMBLY

1 - Glass Assembly

8 - Insulator

2 - Screw(s)

9 - Motor

3 - Motor Clip

10 - Lace

4 - Motor Cover

11 - Wind Deflector

5 - U-Frame Assembly

12 - Sun Shade

6 - Rear Drain Covers

13 - Water Channel

7 - Screw(s)

14 - Screw(s)

23 - 160

SUNROOF

SUNROOF (Continued)

DIAGNOSIS AND TESTING - SUNROOF

Refer to Sunroof Diagnostic Chart for possible

causes. Before beginning sunroof diagnostics verify
that all other power accessories are in proper operat-
ing condition. If not, a common electrical problem
may exist. Refer to Wiring Diagrams, in this publica-
tion for circuit, splice and component descriptions.
Check the condition of the circuit protection (20 amp
circuit breaker in the Junction Block). Inspect all
wiring connector pins for proper engagement and
continuity. Check for battery voltage at the power
sunroof controller, refer to Wiring Diagrams, for cir-

cuit information. If battery voltage of more than 10
volts is detected at the controller, proceed with the
following tests (the controller will not operate at less
than 10 volts).

Before beginning diagnosis for wind noise or water

leaks, verify that the problem was not caused by
releasing the control switch before the sunroof was
fully closed. The sunroof module has a water-man-
agement system. If however, the sunroof glass is in a
partial closed position, high pressure water may be
forced beyond the water management system bound-
aries and onto the headlining.

SUNROOF DIAGNOSIS CHART

SYMPTOM

POSSIBLE CAUSE

Sunroof motor inoperative.

Faulty control switch.

Faulty circuit ground between sunroof module, control switch,
and body harness.

Faulty power circuit between sunroof module, control switch,
and body harness.

Faulty sunroof drive motor.

Faulty sunroof module.

Audible whine when switch is depressed,
sunroof does not operate.

Faulty sunroof drive motor.

Binding cable.

Audible clicking or ratcheting when switch is
pressed, sunroof does not operate.

Broken or worn drive cable.

Worn drive motor gear.

Mechanisms not synchronized.

Sunroof vents and opens, but does not close.

Broken or disengaged trough guide

Binding cable.

Faulty circuit.

Faulty control switch.

Faulty sunroof module.

Faulty drive motor.

Sunroof vents, but does not open.

Binding cable or mechanism.

Faulty circuit.

Faulty switch.

Faulty sunroof module.

Sunroof does not vent

Binding cable or mechanism.

Faulty circuit.

Faulty control switch.

Faulty sunroof module.

SUNROOF

23 - 161

SUNROOF (Continued)

SYMPTOM

POSSIBLE CAUSE

Sunroof water leak.

Drain tubes clogged or kinked or disconnected from the
sunroof.

Glass panel improperly adjusted.

Faulty glass panel seal.

Gurgling sound from sunroof

Low spot in drain hose routing, allowing water to stand.

Wind noise from sunroof.

Glass panel compression to the roof opening not consistent.

Wind deflector not deploying properly.

Glass not installed or adjusted properly.

Faulty glass panel seal.

Buzz, Squeak, Rattles from sunroof

Loose or broken attaching hardware.

No lubrication in track.

Worn or broken mechanism.

Cables bunched or kinked

Sunshade will not function or does not
operate smoothly

Sunshade feet are missing, broken or loose.

No lubrication in track.

Track obstructions or interference.

Glass movement not consistent or glass does
not operate smoothly

Glass and Track timing.

Glass and Track alignment

Cables and Guide alignment

WATER DRAINAGE AND WIND NOISE DIAGNOSIS

The sliding glass panel is designed to seal water

entry with a snug fit between the roof and the seal.
The fit can be checked by inserting a piece of paper
between the roof and the seal. The piece of paper
should have some resistance when pulled out when
the glass panel is in the closed position. The sunroof
housing will drain off a minimum amount of water.
Excessive wind noise could result if the gap clear-
ances are exceeded. The sunroof glass panel may
need to be adjusted. (Refer to 23 - BODY/SUNROOF/
GLASS PANEL - ADJUSTMENTS)

Adequate drainage is provided by a drain trough in

the sunroof housing which encircles the sliding glass
panel and leads to drain hoses. If a wet headliner or
other water leak complaints are encountered, before
performing any adjustments, first ensure that the
drainage system is not plugged or disconnected. Use
a pint container to pour water into the sunroof hous-

ing drain trough. If water flow is restricted, use com-
pressed air to blow out any material plugging the
drain system. Retest system again.

To further check for a disconnected drain hose:
(1) Remove A-pillar trim. (Refer to 23 - BODY/IN-

TERIOR/A-PILLAR TRIM - REMOVAL)

(2) Remove the sun visors. (Refer to 23 - BODY/

INTERIOR/SUN VISOR - REMOVAL)

(3) Remove the map lamps/mini console.
(4) Remove sunroof opening trim lace.

NOTE: Care must be taken not to fold or kink the
headliner upon removal.

(5) Lower headliner as necessary to gain access to

sunroof housing drain tubes. (Refer to 23 - BODY/IN-
TERIOR/HEADLINER - REMOVAL)

(6) Repair as necessary.

23 - 162

SUNROOF

SUNROOF (Continued)

Content .. 839 840 841 842 ..