Saab 900 Convertible - Inoperative Top Performance Issues; No Top Movement During Lowering

900 Convertible Top Troubleshooting Guide
Inoperative Top/Operational Problems/Unsatisfactory Performance
(Note that problems are listed in order of top operating sequence, beginning with top fully raised)
PROBLEM
POSSIBLE CAUSE
ACTION
1
Nothing happens when attempting a. Top switch on center console
See page 1
to lower top (no movement at all, defective
no noises, etc.)
b. Fuse blown
c. Trunk bag raised?
2 First bow raises a few inches and
Fifth Bow latch motor stuck or in-
See page 1
stops
operative
3 Fifth bow raises all the way, then
a. Header Switches closed by
See pages 1 - 3
top stops other movement
dowel pin
b. 5th bow potentiometer will not
reach high limit
c. Tonneau motor disengaged
4
Tonneau cover catches going up -
Latch Adjustment
See page 4
“snaps” when opening
5 Grinding, ticking when tonneau
Tonneau motor not fully engaged See page 4
goes up
6 Top stops l/Z way when lowering
a. Missing 2nd bow drive link or See pages 5-6
the top
2nd bow binding on fabric
b. Programming
c. Main motor or 5th bow poten-
tiometer faulty
7 Top hesitates when lowering top
a. Programming
Seepages6-7
b. 2nd bow catching on fabric
8 Rear window hits rear headrest
Programming See page 7
when lowering’ top
9
5th bow hits Tonneau cover
a. Programming
See page 7
hinges when lowering top
b. Tonneau motor drive shaft
twisted
IO First bow hits Tonneau cover a. Programming
See page 8
when lowering top
b. Twisted Tonneau shaft
c. Bent Tonneau cover hinges
11 “Snapping” noise from rear as top
Broken or missing stops on rear
See page 9
is being lowered into “boot”
window
C
06/09/97