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Volume 3

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LOCATION:    11.1 Cabriolet Soft Top (RST), Roll Bar (RB) (Manual Deployment)   >   13 Diagnosis - Complaint Related Diagnostic Chart


Diagnosis - Complaint Related Diagnostic Chart

Complaint/Problem Possible cause Test step/Remedy 1)
Indicator lamp in power soft top switch (S84) does not light when switching ignition on Control module (N52)
Indicator lamp in power soft top switch (S84)
23 1.0
23 35.0, 36.0
Indicator lamp in power soft top switch (S84) lights with soft top closed (no DTC's)
(Warning tone sounds for approx. 10 sec. while driving)
Soft top fabric bow "locked" switch (S84/8)
Left front soft top "locked" switch (S84/1)
Right front soft top "locked" switch (S84/2)
23 8.0
23 11.0
23 12.0
Indicator lamp in power soft top switch (S84) lights with soft top open (no diagnostic trouble codes)
(Warning tone sounds for approx. 10 sec. while driving)
Soft top compartment cover "locked" switch (A25/1s2)
Left front soft top "locked" switch (S84/1)
Right front soft top "locked" switch (S84/2)
23 5.0
23 11.0
23 12.0
Indicator lamp in power soft top switch (S84) blinks when actuated Diagnostic Trouble Code being stored in memory Read out DTC's
12/1
Roll bar cannot be extended using RB switch (S83) CST/RB hydraulic unit (A7/5) malfunction
RB switch (S83)
RB "extended" switch (S83/6)
RB piston side valve (Y57y11)
System pressure
Roll bar extended
23 1.0, 2.0
23 20.0
23 16.0
23 23.0
33 1.0
33 4.0
Roll bar cannot be extended using rear seat RB switch (rear center console) (S83/4) RB switch (rear center console) (S83/4)
Rear power window safety switch (S21/7)
23 20.0
23 22.0
Roll bar cannot be extended using power soft top
switch (S84)
RB piston side valve (Y57y11)
System pressure
Roll bar extended
23 23.0
33 1.0
33 4.0
Roll bar cannot be retracted using RB switch (S83) CST/RB hydraulic unit (A7/5) does not run
RB switch (S83)
RB "retracted" switch (S83/5)
RB rod side valve (Y57y10)
Roll bar retracted
23 1.0, 2.0
23 20.0
23 15.0
23 21.0
33 3.0
Roll bar cannot be retracted using RB switch (rear center console (S83/4) RB switch (rear center console) (S83/4)
Rear power windows safety switch (S21/7)
23 20.0
23 22.0
Roll bar cannot be retracted using power soft top
switch (S84)
CST/RB hydraulic unit (A7/5) does not run
Power soft top switch (S84)
RB "retracted" switch (S83/5)
RB rod side valve (Y57y10)
Roll bar retracted
23 1.0, 2.0
23 18.0
23 15.0
23 21.0
33 3.0
Side windows do not open at start of soft top operation Voltage supply to CF control module (N57)
CF control module (N57)
23 33.0
Side windows do not close at end of soft top operation (Front latches must be locked) Soft top compartment cover "locked" switch (A25/1s2)
Voltage supply to CF control module (N57)
CF control module (N57)
23 5.0
23 33.0
Heated rear window does not shut off with soft top open Soft top "overhead" switch (S84/4)
Voltage supply to combination relay (heated rear
window) (N10)
23 14.0
23 32.0
Soft top can be opened or closed while driving (front latches unlocked). No warning tone from the soft top control panel. Vehicle speed signal from Hall-effect sensor multipoint connector (X53/5)
Power soft top control module (N52)
23 19.0, 34.0
No centralized closing of side windows after pressing power soft top switch (S84) in closing direction twice Power soft top switch (S84)
Voltage supply to CF control module (N57)
CF control module (N57)
23 18.0
23 33.0
No centralized opening of side windows after pressing power soft top switch (S84) in opening direction twice Power soft top switch (S84)
Voltage supply to CF control module (N57)
CF control module (N57)
23 18.0
23 33.0
1) Observe Preparation for Test, see 22.

Soft top closing sequence (Soft top unlocked at left and right front)

Complaint/Problem Possible cause Test step/Remedy 1)
Soft top compartment lock does not open. CST/RB hydraulic unit (A7/5) does not run
Left front soft top "locked" switch (S84/1)
Right front soft top "locked" switch (S84/2)
RB "retracted" switch (S83/5)
Power soft top switch (S84)
Soft top compartment lock valve (Y56y3)
Hydraulic unit main valve (A7/5y1)
RB control module (N53)
System pressure
Opening soft top compartment lock
23 1.0, 2.0
23 11.0
23 12.0
23 15.0
23 18.0
23 25.0
23 24.0
23 37.0
33 1.0
33 13.0
Soft top compartment lid does not open, or opens slowly Soft top compartment cover valve (Y56y5)
Raising soft top compartment lid vertically
23 27.0
33 14.0
Soft top does not come out of soft top compartment or comes out slowly Soft top compartment "open" switch (S84/5)
Soft top "close" valve (Y55y7)
Closing soft top
23 7.0
23 29.0
33 15.0
Soft top fabric bow does not open, or opens slowly Soft top "overhead" switch (S84/4)
Fabric bow "raise" valve (Y55y8)
Raising soft top fabric bow
23 14.0
23 30.0
33 16.0
Soft top compartment does not close, or closes slowly Soft top fabric bow "raised" switch (S84/6)
Fabric bow lock valve (Y56y4)
Soft top storage compartment cover drive valve (Y56y5)
Lowering of soft top storage compartment cover
23 10.0
23 26.0
23 27.0
33 17.0
Soft top compartment cover lock does not lock Soft top compartment cover "closed" switch (A25/1s1)
Soft top compartment lock valve (Y56y3)
Locking of soft top compartment cover lock
23 6.0
23 25.0
33 18.0
Soft top fabric bow does not close or closes slowly Soft top compartment cover "locked" switch (A25/1s2)
Fabric bow "lower" valve (Y55y9)
Lowering of soft top fabric bow
23 5.0
23 31.0
33 19.0
Soft top fabric bow lock does not lock Soft top fabric bow "down" switch (S84/7)
Fabric bow lock valve (Y56y4)
Locking of soft top fabric bow lock
23 9.0
23 26.0
33 20.0
1) Observe Preparation for Test, see 22.

Soft top opening sequence (Soft top unlatched at left and right front)

Complaint/Problem Possible cause Test step/Remedy 1)
Soft top fabric bow lock does not unlock CST/RB hydraulic unit (A7/5) does not run
Left front soft top "locked" switch (S84/1)
Right front soft top "locked" switch (S84/2)
RB "retracted" switch (S83/5)
Power soft top switch (S84)
Fabric bow lock valve (Y56y4)
CST/RB hydraulic unit main valve (A7/5y1)
RB control module (N53)
System pressure
Opening soft top fabric bow
23 1.0, 2.0
23 11.0
23 12.0
23 15.0
23 18.0
23 26.0
23 24.0
23 37.0
33 1.0
33 5.0
Soft top fabric bow does not rise or rises slowly Soft top fabric bow "locked" switch (S84/8)
Fabric bow "raise" valve (Y55y8)
Setting fabric bow vertical
23 8.0
23 30.0
33 6.0
Soft top compartment lock does not unlock Soft top fabric bow "raised" switch (S84/6)
Soft top compartment lock valve (Y56y3)
Opening soft top compartment latch
23 10.0
23 25.0
33 7.0
Soft top compartment cover does not open or opens slowly Soft top compartment cover drive valve (Y56y5)
Raising soft top compartment cover
23 27.0
33 8.0
Soft top fabric bow does not close or closes slowly Soft top compartment "open" switch (S84/5)
Fabric bow "lower" valve (Y55y9)
Lowering soft top fabric bow
23 7.0
23 31.0
33 9.0
Soft top does not open or opens slowly Soft top fabric bow "down" switch (S84/7)
Soft top "open" valve (Y55y6)
Opening soft top
23 9.0
23 28.0
33 10.0
Soft top compartment cover does not close or closes slowly Soft top "open" switch (soft top in storage
compartment) (S84/3)
Fabric bow lock valve (Y56y4)
Soft top compartment cover drive valve (Y56y5)
Lowering soft top storage compartment cover
23 13.0
23 26.0
23 27.0
33 11.0
Soft top compartment cover latch does not lock Soft top compartment cover "closed" switch (A25/1s1)
Soft top compartment cover drive valve (Y56y5)
Locking soft top storage compartment cover latch
23 6.0
23 25.0
33 12.0
1) Observe Preparation for Test, see 22.