
3. DIAGNOSIS
3.1 FAULT DIAGNOSTIC CHARTS
The fault Diagnostic Charts included in this section list the possible causes and provide a solution with a
reference to a particular paragraph to resolve the fault.
MECHANICAL FAILURES
PROBLEM POSSIBLE CAUSE SOLUTION
While c ycling the panel from tilt t o close i t
begins sl i di ng rearward. Blocking cat ch is brok en. Replace bloc king cat ch, refer to 2.12
BLOCKING CATCH in this Section.
While c ycling ful l y open panel forward, it
begins ti l t i ng under roof ski n. Blocking cat ch is brok en. Replace bloc king cat ch, refer to 2.12
BLOCKING CATCH in this Section.
Glass panel i s misaligned si de to side. Timi ng of dri ve c abl es incorrec t. Retim e dri ve c abl es, refer t o 2.5 TIMING OF
DRIVE CABLES in this Section.
Glass panel sliding too slowly
(with 13.5 V power supply the panel should
not take more than 7 seconds to cycl e f rom
full ret raction to closure).
Weak bat tery.
Misaligned panel creating drag or fri ction.
Faulty drive m otor.
Dirty mechanism .
Charge or replace.
Retim e dri ve c abl es, refer t o 2.5 TIMING OF
DRIVE CABLES in this Section.
Test the dri ve motor as detailed in 3. 3
TESTING ELECTRICAL COMPONENTS in
this S e ction. If necessary, repl ace drive
motor, refer to 2.1 DRIVE MOTOR in this
Section.
Clean and oil the mechani sm using Tefoil
+PTFE (availabl e f rom Appli ed Chemic al s)
or replace if necessary, refer to 2.11 GUIDE
RAIL MECHANISM in this Section.
Glass panel stopping prematurely. Sunroof control unit adj usted improperly.
Obstac l e i n mechani sm or gui de t rack.
Synchronis e sunroof control unit, refer to
2.3 SYNCHRONISATION OF SCU i n this
Section.
Find object and remove.
Sunshade fai l s to open when glass panel i s
opened to tilt posit i on. Retraction m echanism broken. Replace retraction mechanism, refer to
2.10 RETRACTI ON MECHANISM in thi s
Section.
RATTLING NOISES
PROBLEM POSSIBLE CAUSE SOLUTION
Drain channel rat tles. Inspec t for ins ul ator tape between drain
channel and mechanis m. Add insulator tape.
Rattles from side(s) Mounting brac ket screws loose Tighten s crews or repositi on mounting
brackets.
Rattli ng i n dri ve motor area. Cover plate on drive motor has l oose
screws. Tighten cover plat e screws.