Troubleshooting In Convertible Top Operation
Troubleshooting In Convertible Top Operation
INFORMATION: Except for manual unlocking and locking of the convertible top, the opening and closing processes must take place automatically. Pressing a button in the centre console causes the drive elements to execute the preselected motion. Various micro-switches ensure that these processes take place smoothly.
The motor is activated only if the following conditions are met:
- no speedometer signals greater than 5 km/h,
- electric motor plug connection is plugged in,
- terminal 15 connected via ignition lock,
- fuse B 6 (row B, number 6) and fuse D 3 (row D, number 3) are OK,
- parking brake is engaged.
The vehicle must be on a horizontal surface and there must not be any defect in the convertible top actuating mechanism.
Troubleshooting:
The control relay (double relay) is located at sockets 14 and 15 on relay carrier 1 in the footwell.
Terminal designation on the relay carrier from the bottom side of the control relay.
11 - Window regulator control
12 - Window regulator convenient opening function
13 - Convertible top compartment lid (CTCL)
14 - Convertible top locked (cowl panel frame)
15 - Parking brake
16 - "Close convertible top" button
17 - "Open convertible top" button
18 - Speedometer signal
19 - Convertible top unlocked (cowl panel frame)
21 - Window regulator motors
22 - Terminal 31
23 - Terminal 30
25 - "Open convertible top" motor
26 - Terminal 15
27 - "Close convertible top" motor
28 - Convertible top indicator light
29 - Convertible top closed (B-pillar)
Troubleshooting on the relay carrier
INFORMATION: Control relay pulled off. Terminal designation on the relay carrier is from the bottom side of the control relay.
1. Connect measuring instrument (voltmeter) to terminal 22 (ground) and terminal 23 (positive 30) on the carrier plate. Display = battery voltage
2. Connect measuring instrument to terminal 22 (ground) and terminal 26.Switch on ignition. Display = battery voltage
3. Connect measuring instrument to terminal 23 (positive) and terminal 15 (parking brake engaged). Display = battery voltage
4. Connect measuring instrument to terminal 23 and terminal 16 ("close convertible top" button). Press "close" button. Display = battery voltage
5. Connect measuring instrument to terminal 23 and terminal 17 ("open convertible top" button). Press "open" button. Display = battery voltage
6. Convertible top locked. Connect measuring instrument to terminal 23 and terminal 14 (cowl panel frame micro-switch). Display = battery voltage
7. Convertible top locked. Connect measuring instrument to terminal 23 and terminal 29 (B-pillar microswitch). Display = battery voltage
8. Convertible top unlocked. Connect measuring instrument to terminal 23 and terminal 13 (micro-switch closed, convertible top compartment lid CTCL open). Display = battery voltage
9. Convertible top unlocked. Connect measuring instrument to terminal 23 and terminal 19 (cowl panel frame micro-switch). Display = battery voltage
Plug control relay onto relay carrier. Open convertible top compartment lid and pull off electrical plug connection on the convertible top drive motor.
10. Connect positive lead of measuring instrument to terminal 1 (black wire) and negative lead of measuring instrument to terminal 4 (green wire). Use an auxiliary lead to jumper terminal 2 and terminal 3 at the plug connection. Switch on ignition and press "Open" button. Display = battery voltage
11. Connect positive lead of measuring instrument to terminal 4 (green wire) and negative lead of measuring instrument to terminal 1 (black wire). Use an auxiliary lead to jumper terminal 2 and terminal 3. Switch on ignition and press "Close" button. Display = battery voltage
Installation overview of convertible top micro-switches
Locking/unlocking micro-switch
The micro-switch for locking/unlocking is located behind the locking hook holder.
Parking brake micro-switch
The electrical plug connection is located below the parking-brake lever behind the left centre cover. The micro-switch is clipped into the parking brake lever console.
B-pillar micro-switch
The micro-switch is located behind the left side-panel lining.
Convertible top compartment lid micro-switch
The micro-switch is riveted onto the drive-motor bracket. The drive motor with bracket can be removed by unscrewing the three M6 fastening nuts.
INFORMATION: If it is not possible to open the convertible top compartment lid electrically (convertible top open), carefully press the ball socket of the push-bar springs (left and right) out of the ball head of the drive lever.
Manually open the convertible top compartment lid and remove the drive motor.
If the convertible top is closed, the drive motor can be removed from the inside by taking out the cover for the convertible top rest.