FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Fully Automatic

TROUBLESHOOTING TABLE FOR MICROSWITCH ON EM CONVERTIBLE TOP (ELECTRIC MOTOR FULLY-AUTOMATIC):

Test Requirements:
- Circuit diagram: refer to Electrical Diagrams.
- DIS, MoDiC or BMW SERVICE-TESTER.
- Diagnosis diskette for DIS, MODiC or BMW SERVICE-TESTER.
- Battery charged. When battery voltage is below 10.5 V the drive units are switched off by the control unit.
- Fuses in good working order.
- Ignition lock in setting "R".
- Trunk lid (S5) closed.

Open EM convertible top (fully-automatic):
Convertible top closed Actuated: S5, S6, S7
and locked off
Unlock convertible top Actuated: S5, S6
Convertible top raised over Actuated: S5, S6, S8
dead center position
Raise rollover bars Actuated: S1, S5, S6, S8
Rollover bars extended Actuated: S1, S2, S5, S6, S8
Unlock convertible top lid Actuated: S1, S2, S5, S8
Convertible lid open (extended) Actuated: S1, S2, S5, S8, HG
Rollover bar retracts Actuated: S1, S5, S8
Rollover bar retracted Actuated: S5, S8
Convertible top stowed in Actuated: S3, S5, S8
convertible top box
Close convertible top lid Actuated: S3, S5, S8, HG
Lock convertible top lid Actuated: S3, S5, S6, S8

Close EM convertible top (fully-automatic):
Convertible top open Actuated: S3, S5, S6, S8
Convertible top lid unlocked Actuated: S3, S5, S8
Convertible lid open (extended) Actuated: S3, S5, S8, HG
Extend convertible top Actuated: S1, S5, S8
Roll bar extends upwards Actuated: S5, S8
Rollover bars extended Actuated: S1, S2, S5, S8
Close convertible top lid Actuated: S1, S2, S5, S8, HG
Lock convertible top lid Actuated: S1, S2, S5, S6, S8
Rollover bar retracts Actuated: S1, S5, S6, S8
Rollover bar retracted Actuated: S5, S6, S8
Convertible top pulled down Actuated: S5, S6, S7
below dead center point
and locked down


S1: Microswitch on convertible top transmission
S2: Microswitch on convertible top transmission
S3: Microswitch in convertible top box
S4: Only fitted to EM convertible top (semi-automatic)
S5: Microswitch on trunk lid lock
S6: Microswitch on convertible top lid lock, right
S7: Microswitch on convertible top lock (locked down)
S8: Microswitch on convertible top lock (unlocked, convertible top raised over dead center point)
HG: Hall sensor on convertible top lid motor