Saab Tech Talk (STT)

Workshop for classic Saab models => Classic Saab 9-3 & GM900 (MY 1994-2002/03CV) => Topic started by: win_k on 30 June 2011, 02:12:26 AM

Title: Replacing the TWICE module
Post by: win_k on 30 June 2011, 02:12:26 AM
The power locks on my '99 9-3 two door don't work and I've narrowed it down to a faulty TWICE unit.

Before I take a soldering iron to my TWICE, I'd like to be prepared to install a replacement just in case I toast the original.

So, I've got a spare (or two) TWICE with chip, and access to TECH 2 unit with the SAAB software.

Does anyone have the procedures required to actually use a TECH 2 to replace the TWICE?

I've just started wading through the options and paths in the SAAB software, anyone been there, done that?
Title: Re: Replacing the TWICE module
Post by: phoenix on 30 June 2011, 08:49:26 AM
When replacing TWICE, it is normally supplied with a dummy transponder that is already coded to it. You then programme the key fobs to the new TWICE. I would surmise then that if you were to want to use a s/h unit, you would need to secure one with it's matched fob.

The procedure is:
Control module
To remove
1. Undo and lift out the left-hand front seat.
2. Detach and fold away the carpet. (3D: the belt guide must be detached first.)
3. Unplug the connector to the electronic control module.
4. Unscrew 1 nut and lift away the control module.

Programming
1. Fit the control module and screw it down.
2. Plug in the connector to the control module.
3. Replace the carpet. (3D: fit the belt guide.)
4. Refit the front seat.
5. After replacement of the TWICE control module, it must be programmed into the car.

Note
All keys to the car must be programmed at the same time.

Important
The transponders and remote controls that are not available during programming will be rendered unusable.

1. Connect the diagnostic tool.
2. Remove the antenna unit for immobilisation by turning it clockwise. Do not unplug the contact. Place the antenna to the side of the ignition switch.

Note
The antenna unit should not be removed in low temperatures as cracks may form.

Tech 2
3. Hold the included transponder above the hole in the antenna unit. Turn the ignition to the ON position. Hold the transponder in the same position for a few seconds.
When the alarm indicator diode stops flashing, the transponder code has been read by TWICE. If the alarm indicator diode does not stop double flashing, repeat step 3. Adjust the position of the included transponder.
4. Select body system and navigate to TWICE with the diagnostic tool. Do not press ENTER.
5. Hold the included transponder above the hole in the antenna unit.
6. Press ENTER on the diagnostic tool.
7. Select Programming.
8. Select Spare Part Programming.
9. Carry out Spare Part Programming; select the alternatives applicable to the car.
10. Once Spare Part Programming has been carried out, select "Programming transponders and remote controls". Press ENTER. When asked "Do you wish to exit", press NO.
11. Hold the included transponder above the hole in the antenna unit. The seat belt warning lamp should flash to indicate that the transponder code was understood by TWICE. Press OK.
12. If the seat belt warning lamp does not flash, turn the ignition to the OFF position and try again from step 3.
13. Follow the instructions in the diagnostic tool, with the following exception: The first time, the following should be done at step three in Tech 2: Refit the antenna unit. Reinsert the same key.

Note
The antenna unit should not be removed in low temperatures as cracks may form.
14. Follow the instructions in the diagnostic tool.

1. Look at the 'FASTEN SEATBELT' lamp.
2. Press once per second on the remote control's unlock button until the 'FASTEN SEATBELT' lamp flashes once. It may be necessary to press more than 8 times.
3. Remove the key from the ignition and insert the next key.
4. Turn the key to the 'ON' position.
5. Repeat following steps 1 and 2.

More keys and remote controls can be programmed following steps 3 and 5.
Press 'OK' once all keys and remote controls have been programmed.

1. Once all keys have been programmed, select "Immobilisation".
2. Carry out immobilisation programming.
3. Erase DTCs in TWICE.
4. Erase DTCs in the engine management system.
5. Scrap the included transponder.
Title: Re: Replacing the TWICE module
Post by: win_k on 30 June 2011, 10:36:33 AM
PERFECT!!!!!  Will give the procedure a try this afternoon (weather permitting)

On a related note, how can I divorce a radio after it's been separated from it's original car?
Title: Re: Replacing the TWICE module
Post by: Andrew Sinclair on 30 June 2011, 11:24:09 AM
Quote from: win_k on 30 June 2011, 10:36:33 AM
PERFECT!!!!!  Will give the procedure a try this afternoon (weather permitting)

On a related note, how can I divorce a radio after it's been separated from it's original car?

If you have the VIN of the original donor you can do it.  Install radio in new car, use Tech II to change the VIN of the car to that of the donor, radio will now be happily married to the car.  You then use Tech II to divorce the radio then reset the VIN back to what it was.
Title: Re: Replacing the TWICE module
Post by: phoenix on 30 June 2011, 11:29:31 AM
Quote from: win_k on 30 June 2011, 10:36:33 AM
On a related note, how can I divorce a radio after it's been separated from it's original car?

Dangerously. In theory you change the VIN of the receiving car to that of the donor car, then the radio should just work. Divorce the radio, change your VIN back then marry the radio.

However, if anything goes wrong or the process hiccups you're stuffed...
Title: Re: Replacing the TWICE module
Post by: win_k on 30 June 2011, 12:24:05 PM
Quote from: phoenix on 30 June 2011, 11:29:31 AM
Quote from: win_k on 30 June 2011, 10:36:33 AM
On a related note, how can I divorce a radio after it's been separated from it's original car?

Dangerously. In theory you change the VIN of the receiving car to that of the donor car, then the radio should just work. Divorce the radio, change your VIN back then marry the radio.

However, if anything goes wrong or the process hiccups you're stuffed...

That's sort of what I thought.  Since my basic radio works and just the CD fails to read the disc correctly, I'm tempted to buy one of the cheap used non-divorced units and unsolder the ribbon cable between the CD and the rest of the unit (Why could it not have used quick disconnects?).  Will probably experiment with the radio first, but I'm loath to make such a potentially dangerous change to the car.

Definitely will have to spend some time with the Tech 2 unit learning it's ins and out and getting comfortable with it before I can make a rational decision on the VIN swap.

Thanks!
Title: Re: Replacing the TWICE module
Post by: win_k on 04 July 2011, 02:10:09 AM
PHOENIX, many thanks for the procedure to replace the TWICE, it worked like a champ.

Now, I've got three working keys and remotes with a working alarm and power locks!  Whoo hooo!

Next comes the radio and I'll be digging into the original TWICE, I expect I'll find one of the relays is bad.  There are three double relays in it, sort of odd ones but I've got new ones on hand.  At least for me, unsoldering the relays is going to be a pain, each relay has 10 solder joints to the board.  Getting all of them free of solder so the relay can be easily removed is going to be tedious.

Still undecided on the radio, changing the VIN on the DICE to match the replacement radio sounds and looks easy but I easily see how things could go very wrong and really cause some problems.  Once changed, I'd have to divorce the radio from that VIN, change the VIN back  and then marry the radio to the car.  Since getting to the solder joints between the radio's board and the CD unit is pretty easy, it's looking like that's the better path for me.
Title: Re: Replacing the TWICE module
Post by: Greenr28 on 21 September 2011, 09:22:18 PM
Do these instructions apply to a 2002 95?  I have other questions and will start a new thread for that.

Thanks, RG
Title: Re: Replacing the TWICE module
Post by: sgould on 21 September 2011, 10:40:36 PM
It looks very similar, but the important bit is the instruction to "Follow instructions on the diagnostic tool".  If you do not have the Saab TechII diagnostic tool, you won't be able to DIY this.  Neither will be able to just DIY the install, unless you do it at the dealer/specialist because the car will not be driveable without a recognised key.