| Complaint/Problem |
Possible cause |
Note |
Test step/Remedy 1) |
No communication between the Hand-Held
Tester (HHT) and the roll (RB)control module (power soft top) (N52) possible.
|
Voltage supply, CAN data bus, HHT
interface (K-line at electronic ignition switch control module [N73]) |
|
23 1
23 2 |
| Acoustic warning signal of roof control
unit control module (N70) when vehicle is driven and the power soft top
switch (S84) is not operated. |
The soft top is not locked properly. |
The output duration of the warning
signal is approx. 10 seconds.
Reset condition for a renewed output of a warning signal:
 Ignition OFF/ON
or
Change of a limit switch status
|
Lock soft top |
| No acoustic warning signal of overhead
control panel control module (N70). |
CAN data bus, roll (RB)control module
(power soft top)(N52), soft top operation locking gong (N70h1).
|
|
Check HHT actuation of N70h1 |
Flashing of indicator lamp
in power soft top switch (S84) when the switch is operated with the vehicle
driven or stationary.
|
Soft top is not locked properly (flashing
frequency = 1 Hz). |
CAUTION!
The soft top must never be opened or closed while driving! |
Lock soft top. |
Flashing of indicator lamp
in power soft top switch (S84) when the switch is operated with the vehicle
stationary.
|
Soft top is still locked before opening
(flashing frequency = 1 Hz).
Trunk luggage cover not closed
(flashing frequency = 3 Hz),
Trunk luggage cover closed limit switch (S69/10)
The trunk lid is open
(flashing frequency = 3 Hz),
Rotary tumbler switch, CAN interior bus, PSE control module (combined) (A37)
Fault in soft top system
(flashing frequency = 1 Hz).
|
The trunk luggage cover must be pulled out each time before the soft top
is operated. |
Unlock soft top.
Pull out trunk luggage cover.
23 8
Close trunk lid.
Read out pneumatic system equipment (PSE) diagnostic trouble code (DTC)
memory. |
Indicator lamp in power soft top
switch (S84) permanently illuminated with the vehicle stationary, and S84
is not operated.
WARNING!
If the indicator lamp in S84 is permanently illuminated the roll bar must
be extended manually with the roll bar (RB) switch (manual operation) (S83)
before driving the vehicle for reasons of safety.
|
Soft top or soft top compartment cover is not locked properly
Wiring or fuse, terminal 30
Defective or wiring open-circuit at:
Power soft top switch (S84),
RB "retracted" switch (S83/5),
RB "extended" switch (S83/6) |
As a function check the indicator
lamp must come on for 1 second after the ignition is switched on. |
Read out the HHT actual values to check locking.
23 3
23 17
23 18 |
| Soft top does not function when power
soft top switch (S84) is operated |
No vehicle speed signal
CAN data bus
Voltage supply
Power soft top switch (S84)
Roll bar (RB) hydraulic unit (power soft top) (A7/5) |
Signal comes via CAN data bus. The
soft top can only be operated if:
V=0 km/h |
Read out HHT actual value.
23
2
23
1
23
3
23 7
23 5
23 6
33 1 |
| Soft top does not open or close completely |
Undervoltage when there is a load
on the vehicle battery (G1)
Overheating of hydraulic unit motor (A7/5m1). |
|
23 1
23 7
23 5
23 6
33 1 |
Faults during "close soft
top" movement sequence |
|
|
|
| Soft top compartment cover lock does
not open |
No vehicle speed signal.
Voltage supply to roll (RB)control module (power soft top) (N52) and RB
hydraulic unit (power soft top) A7/5
RB "retracted" switch (S83/5),
RB "extended" switch (S83/6),
soft top locked left limit switch (S84/11),
power soft top switch (S84),
Power top compartment cover lock "open" valve (Y56/2y7)
Internal leaks at hydraulic cylinder, unlock/lock soft top compartment cover
or at hydraulic cylinder, unlock/lock soft top bow
Roll(RB)/soft top operation hydraulic unit (A7/5) |
Signal comes via CAN data bus. The
soft top can only be operated if:
v=0 km/h |
Read out actual values using HHT.
23
1
23
2
23 17
23 18
23 9
23 7
23 5
23 6
33 1
|
| Soft top compartment cover does not
open or only raises slowly |
Voltage supply to roll (RB)control
module (power soft top) (N52) and RB hydraulic unit (power soft top) A7/5
Hydraulic cylinder, power top compartment cover lock "open" (Y56/2y7),
power top compartment cover "open" (Y56/2y5),
hydraulic cylinder, unlock/lock soft top compartment cover
hydraulic cylinder, open/close soft top compartment cover |
|
23
1
23 7
23 5
23 6
33 1
|
| Soft top does not come out of soft
top compartment or only closes slowly |
Soft top compartment "open"
switch (S84/5),
power top compartment cover "open" (Y56/2y5),
hydraulic cylinder, open/close soft top
|
|
23
1
23 12
23 7
23 5
23 6
33 1 |
| Soft top bow does not unlock |
Soft top opened limit switch (S84/13s2),
soft top bow lock "open" valve (Y56/2y6),
hydraulic cylinder, unlock/lock soft top bow
|
|
23 10
23
1
23 7
23 5
23 6
33 1 |
| Soft top bow does not raise or only
raises slowly |
Soft top bow locked limit switch
(S84/16),
soft top bow "raise" valve (Y55y8),
hydraulic cylinder, raise/lower soft top bow
|
|
23 16
23 1
23 7
23 5
23 6
33 1
|
| Soft top compartment cover does not
close or only closes slowly |
Soft top bow down/up limit switch
(S84/15), fabric bow lock "open" valve (Y56/2y6),
power soft top compartment cover "open" (Y56/2y5),
hydraulic cylinder, open/close soft top compartment cover.
|
|
23 15
23 1
23 7
23 5
23 6
33 1
|
| Soft top compartment cover does not
lock |
Soft top compartment cover limit
switch (closed) (A25s1),
Power top compartment cover lock "open" (Y56/2y7),
hydraulic cylinder, unlock/lock soft top compartment cover |
|
23 13
23 1
23 7
23 5
23 6
33 1
|
| Soft top bow does not close or only
closes slowly |
Soft top compartment cover limit
switch (locked) (A25s2),
fabric bow "closed" valve (Y56/2y4),
hydraulic cylinder, raise/lower soft top bow |
|
23 14
23 1
23 7
23 5
23 6
33 1
|
| Soft top bow lock does not lock |
Soft top bow down/up limit switch
(S84/15),
fabric bow lock "open" (Y56/2y6),
hydraulic cylinder, unlock/lock soft top bow |
|
23 15
23 1
23 7
23 5
23 6
33 1
|
| Faults during "open soft
top" movement sequence (soft top is unlocked) |
|
|
|
| Soft top bow lock does not unlock |
No vehicle speed signal
Voltage supply to roll bar (RB) control module (power soft top) (N52) and
RB hydraulic unit (power soft top) (A7/5)
Soft top locked left limit switch (S84/11)
RB "retracted" switch (S83/5),
power soft top switch (S84)
fabric bow lock "open" (Y56/2y6),
power top "open" (Y56/2y1)
Internal leaks at hydraulic cylinder, unlock/lock soft top bow, hydraulic
cylinder, unlock/lock soft top compartment cover or hydraulic cylinder,
open/close soft top compartment cover
A7/5
|
Signal comes via CAN data bus. The
soft top can only be operated if:
v=0 km/h |
Read out actual values using HHT.
23 1
23
2
23 9
23 17
23 18
23 9
23 7
23 5
23 6
33 1 |
| Soft top bow does not raise or only
raises slowly |
Fabric bow locked limit switch (S84/16),
fabric bow "open" (Y56/2y3),
hydraulic cylinder, raise/lower soft top bow
|
|
23 16
23 17
23 18
23 9
23 7
23 5
23 6
33 1
|
| Soft top compartment cover lock does
not unlock |
Fabric bow up/down limit switch (S84/15),
power top compartment cover lock "open" (Y56/2y7),
hydraulic cylinder, unlock/lock soft top compartment cover |
|
23 15
23 17
23 18
23 9
23 7
23 5
23 6
33 1
|
| Soft top compartment cover does not
open or only raises slowly |
Soft top compartment limit switch
(locked) (A25s2),
power top compartment cover "open" valve (Y56/2y5),
hydraulic cylinder, open/close soft top compartment cover |
|
23 14
23 17
23 18
23 9
23 7
23 5
23 6
33 1 |
| Soft top bow does not close or only
closes slowly |
Soft top compartment "open"
switch (S84/5),
fabric bow "lower" valve (Y55y9),
hydraulic cylinder, raise/lower soft top bow (left and/or right) |
|
23 12
23 17
23 18
23 9
23 7
23 5
23 6
33 1
|
| Soft top does not open or only raises
slowly |
Soft top fabric bow up/down limit
switch (S84/15),
power top "open" (Y56/2y1),
hydraulic cylinder, open/close soft top (left or/and right) |
|
23 15
23 17
23 18
23 9
23 7
23 5
23 6
33 1
|
| Soft top compartment cover does not
close or only closes slowly |
Soft top open limit switch (S84/13s2),
fabric bow lock "open" (Y56/2y6),
power top compartment cover "open" (Y56/2y5)
hydraulic cylinder, open/close soft top compartment cover |
|
23 10
23 17
23 18
23 9
23 7
23 5
23 6
33 1 |
| Soft top compartment cover lock does
not lock |
Soft top compartment closed limit
switch (A25s1),
Power top compartment cover lock "open" (Y56/2y7)
Internal leaks at hydraulic cylinder, unlock/lock soft top compartment cover
or at hydraulic cylinder, unlock/lock soft top bow |
|
23 13
23 17
23 18
23 9
23 7
23 5
23 6
33 1
|
Printable
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