Can't lock passenger door, but hood and trunk latches are engaged

[Hanseman]

Dear Renntech,

I had just parked my 996MY99C2 and upon locking the car with the remote, I got a double horn beep back and checked to see if the doors indeed had locked. The doors were unlocked. I tried again with the same result, and then opted for locking with the key. The driver-side door locks but the passenger side remains unlocked with the double horn beep to follow. However, the trunk, engine compartment, and gas lid are locked (and does not disengage lock with key opening).

Once home I inserted my laptop with Durametric cable and read the alarm fault memory.

Fault codes as follows:

34: interior sensor faulty (status present)

58: tank servo motor not energized (status present)

60: central locking limit position (lock not reached)

33: interior sensor faulty (status not present)

46: control locking synchronization (status present)

61: central locking limit position (status not present)

The lights are all inoperable inside the car. The window motors does not operate with controls, but the windows (both sides) lower and close with the doors closing.

The alarm system fuse B8 (15AMP) seems OK.

Overall it seems that the alarm system is out of sync with the doors OR the passenger side lock mechanism is bust.

Any help is good help!

Sincerely,

Hans

[Sunnyside]

Dear Renntech,

I had just parked my 996MY99C2 and upon locking the car with the remote, I got a double horn beep back and checked to see if the doors indeed had locked. The doors were unlocked. I tried again with the same result, and then opted for locking with the key. The driver-side door locks but the passenger side remains unlocked with the double horn beep to follow. However, the trunk, engine compartment, and gas lid are locked (and does not disengage lock with key opening).

Once home I inserted my laptop with Durametric cable and read the alarm fault memory.

Fault codes as follows:

34: interior sensor faulty (status present)

58: tank servo motor not energized (status present)

60: central locking limit position (lock not reached)

33: interior sensor faulty (status not present)

46: control locking synchronization (status present)

61: central locking limit position (status not present)

The lights are all inoperable inside the car. The window motors does not operate with controls, but the windows (both sides) lower and close with the doors closing.

The alarm system fuse B8 (15AMP) seems OK.

Overall it seems that the alarm system is out of sync with the doors OR the passenger side lock mechanism is bust.

Any help is good help!

Sincerely,

Hans

Hi , Its faults like this as iMO the alarm system is the achilles heel of our cars.

96-40 Fault code 34

Passenger compartment monitoring sensor, short circuit

to B+ or faulty

Diagnostic conditions

• Alarm system activated

Possible cause of fault

♦ Short circuit to voltage in the wiring between the alarm system

control module and the passenger compartment monitoring sensor

♦ Passenger compartment monitoring sensor faulty

Affected terminals

Plug A, terminals 8 and 24

Diagnosis/troubleshooting

Work instruction Display OK If not OK

1 Check supply voltage of

the sensor

♦ Switch off ignition

♦ Pull off the plug on the passenger

compartment monitoring

sensor

♦ Measure voltage between the

plug on the passenger compartment

monitoring sensor pin 1

and pin 4

> 11 V

⇒ Step 2

Check or repair wiring

harness

→ End

2 Check the wiring from

passenger compartment

monitoring sensor to

alarm system control

module for short circuit to

B+

♦ Pull plug A off the alarm system

control module

♦ Switch on ignition

♦ Measure voltage between plug A

on alarm system pin 24 and

ground

♦ Measure voltage between plug A

on alarm system pin 8 and

ground

0 V

⇒ Step 3

Repair wiring harness

→ End

3 Check the wiring from

passenger compartment

monitoring sensor to

alarm system control

module for open circuit

♦ Switch off ignition

♦ Measure resistance between

plug A on alarm system pin 24

and plug on passenger compartment

monitoring sensor pin 3

♦ Measure resistance between

plug A on alarm system pin 8

and plug on passenger compartment

monitoring sensor pin 2

< 5 Ω

⇒ Step 4

Repair wiring harness

→ End

4 ♦ Replace passenger compartment monitoring sensor → End

[Sunnyside]

96-60 Fault code 58

No current in tank servomotor despite relay actuation

Diagnostic conditions

• Central locking system actuation in the direction "safe" or

"locked"

Possible cause of fault

♦ Short circuit to ground/open circuit in the wiring between the

switching element for the filler flap and the alarm system control

module

♦ Open circuit in wire between ground point 7 and alarm system

control module

♦ Switching element for filler flap faulty

♦ Control module faulty

Affected terminals

Plug B, terminals 1, 5 and 10

Diagnosis/troubleshooting

Work instruction Display OK If not OK

1 Check wire between

ground point 7 and alarm

system control module

for open circuit

♦ Switch off ignition

♦ Pull plug B off the alarm system

control module

♦ Measure the resistance between

plug B pin 1 and ground

< 5 Ω

⇒ Step 2

Repair wiring harness

→ End

2 Check the wiring from the

switching element for the

filler flap to the alarm system

control module for

short circuit to ground

♦ Pull plug off switching element

for filler flap

♦ Measure resistance between

plug B on alarm system control

module pin 5 and ground

♦ Measure resistance between

plug B on alarm system control

module pin 10 and ground

∞ Ω

⇒ Step 3

Repair wiring harness

→ End

2 Check the wiring from the

switching element for the

filler flap to the alarm system

control module for

open circuit

♦ Measure resistance between

plug B on alarm system control

module pin 5 and pin 2 on plug

of switching element for filler

flap

♦ Measure resistance between

plug B on alarm system control

module pin 10 and pin 1 on plug

of switching element for filler

flap

< 5 Ω

⇒ Step 3

Repair wiring harness

→ End

3 Check output signal of the

alarm system control

module

♦ Select "Filler flap" in menu item

"Drive links"

♦ Perform a drive-link test and

simultaneously measure the voltage

on the plug of the switching

element for filler flap, pins 1 and

2

A short voltage

pulse can be measured

with the digital

multimeter

⇒ Step 4

⇒ Step 5

4 ♦ Replace switching element for filler flap → End

5 ♦ Replace control module → End

[Sunnyside]

96-62 Fault code 60

Central locking limit position - locked not reached

Diagnostic conditions

• Control of central locking system in the direction of "locked"

Possible cause of fault

♦ Switch for central locking faulty

♦ Short circuit to ground/open circuit in the wiring between the

alarm system control module, switch for central locking or door

locks

♦ Driver’s/passenger’s door lock faulty

♦ Control module faulty

Affected terminals

Plug A, terminals 5, 28, 29, 30, 32

Plug B, terminals 8 and 9

During troubleshooting, the micro switches of the door locks are

tested in Step 4. The test is to be used only for vehicles with "safe

position". USA vehicles do not have a "safe" position; "Driver’s door

secured" and "Passenger’s door secured" are therefore displayed

during the "Input signals" test.

Diagnosis/troubleshooting

Work instruction Display OK If not OK

1 Check switch for central

locking

♦ In the menu item "Input signals",

select "Central locking

system button"

♦ Actuate central locking system

switch and check the statuses

on the screen

⇒ Step 2 ⇒ Step 5

2 Check leads between the

alarm system control

module and the door

locks for short circuit to

ground

♦ Pull plugs A and B off the

alarm system control module

♦ Pull plug off both door locks

♦ Measure resistance between

plug A on alarm system control

module pin 5 and ground

♦ Measure resistance between

plug A on alarm system control

module pin 28 and ground

♦ Measure resistance between

plug A on alarm system control

module pin 30 and ground

♦ Measure resistance between

plug A on alarm system control

module pin 32 and ground

♦ Measure resistance between

plug B on alarm system control

module pin 8 and ground

♦ Measure resistance between

plug B on alarm system control

module pin 9 and ground

∞ Ω

⇒ Step 3

Repair wiring harness

→ End

Work instruction Display OK If not OK

3 Check leads between the

alarm system control

module and the door

locks for open circuit

♦ Measure resistance between

plug A on alarm system control

module pin 5 and pin 7 on plug

of door lock on driver’s side

♦ Measure resistance between

plug A on alarm system control

module pin 28 and pin 7 on

plug of door lock on passenger’s

side

♦ Measure resistance between

plug A on alarm system control

module pin 30 and pin 3 on

plug of door lock on driver’s

side

♦ Measure resistance between

plug A on alarm system control

module pin 32 and pin 3 on

plug of door lock on passenger’s

side

♦ Measure resistance between

plug B on alarm system control

module pin 9 and pin 2 on

plug of the driver’s side and

passenger’s side door locks

♦ Measure resistance between

plug B on alarm system control

module pin 9 and ground

< 5 Ω

⇒ Step 4

Repair wiring harness

→ End

4 Check micro switches of

the two door locks (possible

detection of faulty

driver’s/passenger’s

door lock)

♦ Push plugs A and B back onto

the alarm system control module

♦ Reconnect plugs to both door

locks

♦ Close doors

♦ Vehicle not secured and not

locked

♦ Select "Driver’s side locked",

"Passenger’s side locked"

"Driver’s side secured" and

"Passenger’s side secured" in

menu item "Input signals".

Driver’s side not

locked

Passenger’s side

not locked

Driver’s side not

secured (not applicable

to USA vehicles)

Passenger’s side

not secured (not

applicable to USA

vehicles)

⇒ Step 12

⇒ Step 11

Work instruction Display OK If not OK

5 Check switch for central

locking

♦ Remove switch for central

locking and pull plug off the

switch

♦ Measure resistance between

pins 4 and 1 on the central

locking switch

Central locking

switch actuated in

"close" direction

< 5 Ω

Central locking

switch not actuated

in "close" direction

∞ Ω

⇒ Step 6

Replace switch for

central locking

→ End

6 Check switch for central

locking

♦ Measure resistance between

pins 4 and 2 on the central

locking switch

Central locking

switch actuated in

"open" direction

< 5 Ω

Central locking

switch not actuated

in "open" direction

∞ Ω

⇒ Step 7

Replace switch for

central locking

→ End

7 Check the wire from the

central locking switch to

the control module for

short to ground

♦ Pull plug off switch for central

locking

♦ Pull plug A off the alarm system

control module

♦ Measure resistance between

plug A on control module pin

29 and ground

∞ Ω

⇒ Step 8

Repair wiring harness

→ End

8 Check the wire from the

central locking switch to

the control module for

open circuit

♦ Measure resistance between

plug A on control module pin

29 and plug on switch for central

locking pin 1

< 5 Ω

⇒ Step 9

Repair wiring harness

→ End

9 Check the wire from the

central locking switch to

the control module for

open circuit

♦ Measure resistance between

pins 1 and 2 of plug for central

locking switch

approx. 180 Ω at

20 °C

⇒ Step 10

Repair wiring harness

→ End

10 Check wire from fuse C 3

to switch for central locking

♦ Switch on ignition

♦ Measure voltage between plug

on the central locking system

pin 4 and ground

> 11 V

⇒ Step 12

Check fuse C 3 or

repair wiring harness

→ End

11 ♦ Depending on the test result of the input signals test in

step 4, replace the driver's/passenger's door lock

→ End

12 ♦ Replace alarm system control module → End

[Sunnyside]

96-39 Fault code 33

Passenger compartment monitoring sensor faulty

Diagnostic conditions

• Alarm system activated

Possible cause of fault

♦ Passenger compartment monitoring faulty

Affected terminals

-

Diagnosis/troubleshooting

Work instruction Display OK If not OK

1 ♦ Replace passenger compartment monitoring sensor → End

[Sunnyside]

96-51 Fault code 46

Central locking synchronisation

Diagnostic conditions

• Central locking system controlled in "safe" or "locked" position

Possible cause of fault

♦ Short circuit to ground/open circuit between alarm system control

module and door locks

♦ Door lock faulty

Affected terminals

Plug A, terminals 5, 19, 28, 30, 32

Plug B, terminal 9

During troubleshooting, the micro switches of the door locks are

tested in Step 1. The test is to be used only for vehicles with "safe

position". USA vehicles do not have a "safe" position; "Driver’s door

secured" and "Passenger’s door secured" are therefore displayed

during the "Input signals" test.

Diagnosis/troubleshooting

Work instruction Display OK If not OK

1 Check micro switches of

both door locks

♦ Connect PST 2 and switch on

ignition.

♦ Close doors

♦ Do not lock or secure the vehicle

♦ Select the following switch positions

in the "Input signals" menu

♦ Driver’s side secured

♦ Passenger’s side secured

♦ Driver’s side locked

♦ Passenger’s side locked

Driver’s side not

secured (not USA)

Passenger’s side not

secured (not USA)

Driver’s side not

locked

Passenger’s side not

locked

⇒ Step 4

⇒ Step 2

2 Check wiring from control

module to door lock

for short circuit to ground

♦ Pull plugs A and B off the control

module

♦ Pull plug off the door lock with

the incorrect switch positions

from step 1

♦ Measure resistance between

plug A on control module pin 5

and ground (if on driver’s side)

or pin 28 on the control module

and ground (if on passenger’s

side)

∞ Ω

⇒ Step 3

Repair wiring harness

→ End

3 Check wiring from control

module to door lock

for open circuit

♦ Pull plug off the door lock with

the incorrect switch positions

from step 1

♦ Measure resistance between

plug A on control module pin 5

and plug on door lock pin 7 (if

on driver’s side) or pin 28 on the

control module and pin 7 on the

door lock (if on passenger’s

side)

< 5 Ω

⇒ Step 6

Repair wiring harness

→ End

4 Check leads from the

alarm system control

module to the servomotors

for short circuit to

ground

♦ Pull plugs off both door locks

♦ Pull plugs A and B off the alarm

system control module

♦ Measure resistance between

plug B on control module pin 9

and ground

♦ Measure resistance between

plug A on control module pin 19

and ground

∞ Ω

⇒ Step 5

Repair wiring harness

→ End

9601 Fault code 46 96-51 page 3

Alarm system I 48

46xxxi48

96

Printed in Germany – 4, 2001

5 Check leads from the

alarm system control

module to the servomotors

for open circuit

♦ Pull plugs off both door locks

♦ Pull plugs A and B off the alarm

system control module

♦ Measure resistance between

plug B on control module pin 9

and pin 2 on plugs of the right

and left door locks

♦ Measure resistance between

plug A on control module pin 19

and pin 9 on plugs of the right

and left door locks

< 5 Ω

⇒ Step 7

Repair wiring harness

→ End

6 ♦ Replace right or left door lock → End

7 ♦ Replace control module → End

[Sunnyside]

96-63 Fault code 61

Central locking limit position - unlocked not reached

Diagnostic conditions

• Control of central locking system in the direction of "unlocked"

Possible cause of fault

♦ Wrong country coding

♦ Short circuit to ground/open circuit in the wiring between the

alarm system control module, central locking switch or door

locks

♦ Door lock (driver/passenger) faulty

♦ Control module faulty

Affected terminals

Plug A, terminals 5, 28, 29, 30, 32

Plug B, terminal 3

During troubleshooting, the micro switches of the door locks are

tested in Step 4. The test is to be used only for vehicles with "safe

position". USA vehicles do not have a "safe" position; "Driver’s door

secured" and "Passenger’s door secured" are therefore displayed

during the "Input signals" test.

Diagnosis/troubleshooting

Note!

Work instruction Display OK If not OK

1 Check coding ♦ In menu item "Country coding",

check whether the alarm system

control module is correctly

coded for the place of

use

⇒ Step 2 Recode the alarm

system control

module (country

coding)

→ Ende

2 Check central locking

switch

♦ In the menu item "Input signals",

select "Central locking

system button"

♦ Actuate central locking system

switch and check the statuses

on the screen

⇒ Step 3 ⇒ Step 5

96-63 page 2 9601 Fault code 61

61xxxi48

96

3 Check leads between the

alarm system control

module and the door

locks for short circuit to

ground

♦ Pull plugs A and B off the

alarm system control module

♦ Pull plug off both door locks

♦ Measure resistance between

plug A on alarm system control

module pin 5 and ground

♦ Measure resistance between

plug A on alarm system control

module pin 28 and ground

♦ Measure resistance between

plug A on alarm system control

module pin 30 and ground

♦ Measure resistance between

plug A on alarm system control

module pin 32 and ground

♦ Measure resistance between

plug B on alarm system control

module pin 3 and ground

∞ Ω

⇒ Step 4

Repair wiring harness

→ End

4 Check leads between the

alarm system control

module and the door

locks for open circuit

♦ Measure resistance between

plug A on alarm system control

module pin 5 and pin 7 on

plug of door lock on driver’s

side

♦ Measure resistance between

plug A on alarm system control

module pin 28 and pin 7

on plug of door lock on passenger’s

side

♦ Measure resistance between

plug A on alarm system control

module pin 30 and pin 3

on plug of door lock on

driver’s side

♦ Measure resistance between

plug A on alarm system control

module pin 32 and pin 3

on plug of door lock on passenger’s

side

♦ Measure resistance between

plug B on alarm system control

module pin 3 and pin 2 on

plug of the driver’s side and

passenger’s side door locks

♦ Measure resistance between

plug B on alarm system control

module pin 9 and ground

< 5 Ω

⇒ Step 5

Repair wiring harness

→ End

5 Check micro switches of

the two door locks (possible

detection of faulty

driver’s/passenger’s

door lock)

♦ Push plugs A and B back onto

the alarm system control module

♦ Reconnect plugs to both door

locks

♦ Close doors

♦ Vehicle not secured and not

locked

♦ Select "Driver’s side locked",

"Passenger’s side locked"

"Driver’s side secured" and

"Passenger’s side secured" in

menu item "Input signals".

Driver’s side not

locked

Passenger’s side

not locked

Driver’s side not

secured (not applicable

to USA vehicles)

Passenger’s side

not secured (not

applicable to USA

vehicles)

⇒ Step 12

⇒ Step 11

6 Check central locking

switch

♦ Remove central locking switch

and pull plug off the switch

♦ Measure resistance between

pins 4 and 1 on the central

locking switch

Central locking

switch actuated in

"open" direction

< 5 Ω

Central locking

switch not actuated

in "close" direction

∞ Ω

⇒ Step 6

7 Check central locking

switch

♦ Measure resistance between

pins 4 and 2 on the central

locking switch

Central locking

switch actuated in

"open" direction

< 5 Ω

Central locking

switch not actuated

in "open" direction

∞ Ω

⇒ Step 7

8 Check the wire from the

central locking switch to

the control module for

short circuit to ground

♦ Pull plug off central locking

switch

♦ Pull plug A off the alarm system

control module

♦ Measure resistance between

plug A on control module pin

29 and ground

∞ Ω

⇒ Step 8

9 Check the wire from the

central locking switch to

the control module for

open circuit

♦ Measure resistance between

plug A on control module pin

29 and plug on switch for central

locking pin 1

10 Check the wire from the

central locking switch to

the control module for

open circuit

♦ Measure resistance between

pins 1 and 2 of plug for central

locking switch

approx. 180 Ω at

20 °C

⇒ Step 10

11 Check wire from fuse C

3 to central locking

switch

♦ Switch on ignition

♦ Measure voltage between plug

on the central locking switch

pin 4 and ground

> 11 V

⇒ Step 12

Check fuse C 3 or

repair wiring harness

→ End

12 ♦ Depending on the test result of the input signals test in

step 4, replace the driver’s/passenger’s door lock

→ End

13 ♦ Replace alarm system control module → End

[Sunnyside]

sorry, theres loads of information there from the workshop manual. Its assumed in the manual that your using PST2 but durametrics will do the same job.

(The information is from my 996tt workshop manual CD and is pasted in order as it was on the page. the information is in table format on the computer but is printed as a list so you have to follow the steps carefully)

Hope this helps and I will be following the outcome so please keep us all updated. As i said earlier the alarm system is so complicated its a bad point with the car IMO.

With that many faults, i would check the Alarm/cl module has not got wet. If the door seals or the seals inside the door cards are poor the water collects in the lowest point in the car, which just happens to be where Porsche fits the Alarm / Cl module. :rolleyes:

Frank :)

Edited September 4, 2011 by Sunnyside

[Doohan]

I've the 96-39 Fault code 33...

Replaced passenger compartment monitoring sensor, but nothing happened..

I'm following the instruction for the fault code 32 (it look to be the same as 34) I have a battery voltage displayed instead of 0, now, how I can check and repair the wiring harness??

[Sunnyside]

I've the 96-39 Fault code 33...

Replaced passenger compartment monitoring sensor, but nothing happened..

I'm following the instruction for the fault code 32 (it look to be the same as 34) I have a battery voltage displayed instead of 0, now, how I can check and repair the wiring harness??

which pin are you getting voltage on. It says to check A24 to ground and also A8 to ground. If not 0v then replace sensor.

On the cct diagram when you have disconnected plug A from the alarm /cl module and check A8 to ground the alarm siren would appear to still be connected to A8 as well. In other words A8 is connected to A2 on the interior sensor and also pin A2 of the Siren. The siren might be causing the 12 v on line A24. Pull off the plug to the siren and see if the voltage drops to 0v.

A24 only goes to A3 on the sensor so any voltage on that with the interior sensor plug disconnected A24 to A3 can only come from a short in the wiring/wiring fault.

[Doohan]

I'm having voltage ON at pin 24 but I already unplugged the siren and the interior sensor before testing, at this point should I try to connect 24 to 3 with a straight line?

[Doohan]

but.... should I check the pin 24 and 8 on the control unit alarm system or should I check pin 24 and 8 on the plug A by itself?

[Sunnyside]

but.... should I check the pin 24 and 8 on the control unit alarm system or should I check pin 24 and 8 on the plug A by itself?

They way I read it, its asking to check the wiring.

[Doohan]

Ok... I checked both, so actually I don't receive signals from the wiring, the wiring harness is ok! is it possible that the new passenger compartment monitoring sensor is broken? will try to get another one tomorrow at the dealer...

[Sunnyside]

Ok... I checked both, so actually I don't receive signals from the wiring, the wiring harness is ok! is it possible that the new passenger compartment monitoring sensor is broken? will try to get another one tomorrow at the dealer...

Have you checked pin 1 & 4 on the sensor plug. 1 iIRC is the 12v supply and 4 is earth. Perhaps you have lost the earth return?? Or the 12 v supply.

have you any other alarm module fault codes??

[Doohan]

Yes, I've checked pin 1 and 4 on the sensor plug, I can read the battery voltage... Anyway I finally had a new sensor (number 2) from the dealer, now I have fault 33 & 34!

[Doohan]

Update, I do not have the Alarm Siren and the tilt sensor, I checked the compartment monitoring sensor by closing the car with the remote and keeping the window open, after 30s if I move my hand inside the car the alarm horn goes on! so the sensor is actually working???