Test Point 5

Fault, Fault Code 05 Test Point 5

Timeout error

Possible causes, elimination, notes
This fault is only stored in the memory if an electric motor is actuated and does not reach the limit position within 6 seconds, or the potentiometers of the convertible top and CTCL do not show any change in voltage within 3 seconds.

1. Check whether the valve screw of the hydraulic pump is closed.

To check the micro-switch input signals, select the input signals which appear in the menu: Latch locked, Latch unlocked, Convertible top, Convertible- top compartment lid side flaps, Latching hook. Actuate the micro-switch manually (press it) to read the response in the bitmap positions of the tester display.


If the convertible top is between "Convertible top closed" and Convertible top forward and if the Convertible top raised input is connected to ground (contact for micro-switch of convertible-top latch does not lie against the top edge of the cowl panel and does not switch), examine the tension of the convertible-top covering using the left and right tension cables or, if necessary, loosen by 1 or 2 turns so that the contact lies against the top edge of the cowl panel and switches.

If the convertible top is in the forward position (diagram) on closing, check the response of the micro-switch - unlocked or not unlocked (small diagram) - in the convertible-top latch.

If the micro-switch is defective, replace the convertible-top latch.

If the convertible top is in the rear position (diagram) on opening, check the response of the micro-switch - unlocked or not unlocked (small diagram) - in the convertible-top latch.

If the micro-switch is defective, replace the convertible-top latch.

If the convertible top is in the centre front position (diagram) on closing, check the response of the micro-switch - not locked or locked (small diagram) - in the convertible-top latch.

If the micro-switch is defective, replace the convertible-top latch.


If the convertible top is in the centre rear position (diagram) on opening, check the response of the micro-switch - not locked or locked (small diagram) - in the convertible-top latch.

If the micro-switch is defective, replace the convertible-top latch.

If the convertible top is in the closed position (diagram) and the latching hook has been actuated, check the response of the convertible top (CTCL) micro-switch or adjust the Bowden cable of the central locking hook in such a way that the micro-switch switches. A defective micro-switch must be replaced.

If the convertible top remains in a position not described here.

6. Switch ignition off and remove ignition key. With test adapter 9619, 9636 and pin template 9636, measure the resistance of the convertible- top compartment lid potentiometer at row 3, pins 1, 3 and 5 with the ohmmeter. If the display Infinite Ohms appears, the potentiometer and drive motor must be replaced.
7. Switch ignition off and remove ignition key. With test adapter 9619, 9636 and pin template 9636, measure the resistance of the convertible- top potentiometer at row 1, pins 12, 21 and 24 with the ohmmeter. If the display Infinite Ohms appears, the convertible-top potentiometer must be replaced.