Hi All
Below is some of what the shop manual has to say on the convertible top function. The actual trouble shooting is quite specialized because special tools are required. It sounds like you may have a faulty micro-switch
I am having a problem with my top also, it is in the convertible top fully open (or down) position. When I actuate the top switch I get the click clack sound from the control module but no action. Recently I topped up the hyd fluid (as per Izzy's DIY)to correct an intermitant cab top function and the top worked perfect.
I have two questions for those who have moved the top by manual method;
If I put the top up by the emergency (manual) method, will the top need to be calibrated?
Does anyone know if the durametric code reading software can read and clear top function codes?
This is alittle long and no diagrams
911 Carrera (996) Convertible-top diagnosis
General information
Diagnosis
The monitoring of signals by the convertibletop
control module enables the system to
perform reliable, precise diagnosis. Further,
certain additional functions, such as e.g.
test of drive links and of input signals
can be activated using the Porsche
System Tester 2 and their
function checked.
General infonnation
Convertible-top control
Each single step of the opening/closing process
is only executed on condition that the preceding
step was performed correctly.
If a single step is not confirmed within a
given time, the actuation of the drive
motor is interrupted. The fault memory can be read out and
erased with the Porsche System
Tester 2. The diagnostic socket is
located below the knee guard
on the driver's side.
At the beginning of a process, the limit switch
or potentiometer values have a particular
configuration, which is examined
by the control module.
The control module monitors itself and
the connected components. The results
are read out via the diagnostic interface.
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61-D3Convertible-top diagnosis 911 Carrera (996)
Overview of convertible-top components
Rocker switch 1
2 Warning light
Micro-switch, latching hook (windscreen frame) 3
Micro-switch, convertible-top latch (convertible-top side) 4
Potentiometer I convertible-top interrogation 5
6 Control module
Micro-switch, convertible-top compartment lid (locked) 7
Potentiometer, convertible-top compartment lid interrogation 8
Micro-switch, left/right rear section flap up and down 9
The convertible top is actuated if:
Terminal 15 is connected via ignition.
The parking brake input is connected to ground (parking brake engaged),
No speedometer signals greater than 5 km/h (3 mph) are present.
Engine compartment lid is closed (input not at ground potential),
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Fault memory
Overview of possible faults
1 Switch position implausible
2 Button short to ground
3 Convertible-top pot. fault
4 CTCL pot. fault
5 Timeout error
6 Calibration necessary
7 Supply voltage
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Fault, Fault code Possible causes, elimination, notes
Test point 1
Switch position implausible
Fault code 01 This fault is only stored in the memory when an operation
has taken place
(button or comfort function with the key).
1. Check response of micro-switches of rear section flaps left and right.
A defective micro-switch must be replaced.
Refer to Servo No. 61 41 19
2. Check response of micro-switch in convertible-top latch.
If the micro-switch is defective, replace the convertible-top latch.
Test point 2
Button short to ground
Fault code 02 1. Check pin 1 to pin 4 for continuity (bitmap on "close" switch),
check button pin 2 to pin 4 for continuity
(bitmap on "open" switch).
2. Measure resistance of wires 1 and 2 to one another with
the ohmmeter. Display 1.8 -2.0 K .0.
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Fault Fault code Possible causes, elimination, notes OJ 0 , -.
Test point 3
Convertible-top pot. fault
Fault code 03 This fault is only stored in the memory if the voltage at the input
of the convertible-top potentiometer exceeds or falls below
the operating range.
1. 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 I, pins 12, 21
and 24 with the ohmmeter. If the display 00 .Q appears,
the convertible-top potentiometer must be replaced.
Refer to Servo No. 61 66 19
2. Switch on the ignition and measure at row 1, pins 12 and 21,
with the voltmeter; nominal value (display) 0.4 -4.4 volts.
If there is no voltage display, replace the control module.
3. Calibrate the convertible top
Test point 4
CTCL pot. fault
Fault code 04 This fault is only stored in the memory if the voltage at the input
of the convertible-top compartment lid potentiometer exceeds
or falls below the operating range.
1. 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 I,
pins I, 3 and 5 with the ohmmeter. If the display 00 .0. appears,
the potentiometer and drive motor must be replaced.
Refer to Servo No. 61 70 19
2. Switch on the ignition and measure at row 3, pins 1 and 3,
with the voltmeter; nominal value (display) 0.5 -4.4 volts.
If there is no voltage display, replace the control module.
3. Calibrate the convertible top
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Fault, Fault code Possible causes, elimination, notes
Test point 5
Timeout error
Fault code 05 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.
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.
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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.
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Fault, Fault code Possible causes, elimination, notes
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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.
194_98
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.
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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.
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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.
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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.
Refer to Servo No. 61 81 19
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 I, 3 and 5 with the ohmmeter. If the display 00 .0. appears
the potentiometer and drive motor must be replaced.
Refer to Servo No. 61 7019
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 00 .Q appears,
the convertible-top potentiometer must be replaced.
Refer to Servo No. 61 66 19
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Printed inConvertible-top diagnosis 911 Carrera (996)
Test point 6
Calibration necessary
Fault code 06
This fault is stored in the memory after 1000 actuations or
if fault code 03, convertible-top pot. fault, or fault code 04,
CTCL pot. fault, is entered.
1. Read out and delete actuation counter 2.
2. A newly installed control module has not been calibrated.
3. Proceed as described in test points 3 or 4.
4. Calibrate the convertible top
Test point 7
Supply voltage
Fault code 07 1. Check the battery or alternator.
2. Inspect the plug connection on the control module for corrosion,
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