Update Programming (Flashing) Control Module For Towing Sensor (J345) To Accept 7-Pin To 4-Pin Adapter (GROUP 01, NO. 03-07)

Publication date: 2003-09-24
Reference number: GROUP 01, NO. 03-07

UPDATE PROGRAMMING (FLASHING) CONTROL MODULE FOR TOWING SENSOR (J345) TO ACCEPT 7-PIN TO 4-PIN ADAPTER

TECHNICAL SERVICE BULLETIN

Reference Number(s): GROUP 01, NO. 03-07, Date of Issue: September 24, 2003

VOLKSWAGEN:	2004 Touareg With Towing Accessory Package and Control Module Part No:7L0 907 383C
GROUP:	01 - On-Board Diagnostic

SUBJECT

Update Programming (Flashing) Control Module For Towing Sensor (J345) To Accept 7-Pin To 4-Pin Adapter

CONDITION

Trailer Control Module (J345) requires "Update - Programming" to correct warning light function when using a 7-pin to 4-pin adapter to connect to a trailer.

SERVICE

Tool requirements

VAS 5051 or 5052 (with Basis CD V.05.10 and the Brand CD V.05.35 or higher) with old diagnosis logs erased prior to start.
"Update - Programming" (flashing) CD W42TOUAREGTLCD.

NOTE: Additional copies of the "Update - Programming" CD (Literature Number W42TOUAREGTLCD) may be ordered from the Volkswagen Technical Literature Ordering Center at www.vw.ddsltd.com, or by calling 1-800-544-8021 from 8:00 a.m. to 8:00 p.m. EST Monday through Friday. This number can be dialed in both the United States and Canada.

VEHICLE REQUIREMENTS

Battery MUST have minimum no-load charge of 12.5V (failure to maintain voltage during update process can lead to Control Module failure) (you must use an approved battery charger to maintain battery voltage).
VAS 5051: connected to vehicle and to 110V AC Power supply at all times during procedure.
VAS 5052: connected to vehicle with battery voltage requirements met.
Any appliances with high electromagnetic radiation (i.e. mobile phones) switched OFF.
No Stored DTC's, erase any stored DTCs.

CAUTION: Non-observance of the following points may lead to Control Module failure!

VAS 5051 or 5052 must always be connected to the approved power supply at the approved voltages. Under no circumstances should the power supply be interrupted or the diagnostic connector unplugged during the flash procedure.

Any appliances with high electromagnetic radiation (i.e. mobile phones) must be switched OFF.

"UPDATE - PROGRAMMING" (FLASHING) PROCEDURE, CHECKING FOR UPDATE MATCH

Switch ignition ON.
Switch VAS 5051/5052 ON and insert flash CD into CD drive as soon as start screen appears.
Select "Vehicle Self Diagnosis" mode.

NOTE: You must return to the start screen before starting a new (flashing) session, otherwise the flashing CD will not be recognized by the tester.

Select "Vehicle Self Diagnosis" mode.
Select vehicle system "69-Trailer function".

Program checks software level.

If software level DOES NOT match the level indicated on Flashing CD:

"Update - Programming" (arrow) appears.

Fig 1: VAS 5051/5052 Scan Tool Update - Programming Display

If software level of Control Module MATCHES level indicated by Flashing CD:
"Update - Programming" (arrow) will not appear.

PRIOR TO PERFORMING PROCEDURE TO "UPDATE - PROGRAMMING" (FLASH) THE CONTROL MODULE

ALL fault memories must be interrogated and erased.

NOTE: Failure to erase ALL fault memories may cause "Update - Programming" (flashing) procedure to fail!

Select Diagnosis function "06 - End output".

Fig 2: Selecting Diagnosis Function "06 - End Output"
Select Diagnosis function "00 - Collection services".
Select "Check DTC memory - complete system". which will interrogate all fault memories.
Erase ALL fault memories.

Once ALL fault memories have been erased:

Select vehicle system "69-Trailer function".

Fig 3: Select Vehicle System "69-Trailer Function"
Select "Update - Programming" option at bottom of screen (arrow).

CAUTION: Once "Update - Programming" function has been started, switching ignition OFF or disconnecting the diagnostic connector may completely destroy the Control Module.

"UPDATE - PROGRAMMING" (FLASHING), PERFORMING

After selecting "Update - Programming" function:

Fig 4: Selecting "Update - Programming" Function

By selecting the > button, the programming procedure begins.

Similar screen appears:

Fig 5: Programming In Progres Display
Previous data in the Control Module is erased and new data is being transferred to the module from the flash CD.

NOTE: Approx. flashing time is 3 minutes.

NOTE: If, during the "Update - Programming", a fault message is displayed:

Fig 6: Update - Programming Fault Message Displayed

Confirm that VAS 5051 or VAS 5052 diagnostic tool power supply is adequate and that ALL appliances with high electromagnetic radiation (i.e. mobile phones) are switched OFF.
The "Update - Programming" (flashing) process must then be started from the beginning using the "Repeat" button (arrow).

DO NOT use the "Cancel" button.

IMPORTANT: On NO occasion should the "Cancel" button be selected.

Once "Update - Programming" (flashing) is complete:

Similar screen appears.

Fig 7: Programming Log, Save Result Display
New Control Module Part Number and updated software level is displayed at (arrows).

Once "Update - Programming" (flashing) is complete, the control module must be re-initialized.

Select the > button.
- The tester requests you to switch the ignition OFF.
  
  Fig 8: Tester Request To Switch Ignition Off
Switch ignition OFF.

IMPORTANT:

Wait at least 20 seconds before switching the ignition back ON (failure to wait at least 20 seconds may damage the Control Module).

After waiting 20 seconds:

Switch ignition ON.
After switching ignition ON, the Control Module has been re-initialized, however, fault memories must now be erased.
Select the "Continue button"

FAULT MEMORIES, ERASING AFTER "UPDATE - PROGRAMMING" (FLASHING)

Due to the CAN bus system, fault messages will be stored in various Control Modules during programming.

To erase ALL fault memories:

Fig 9: Erasing Fault Memories Display

Confirm by selecting the > button.

Erase fault memories takes approx. 15 minutes.

Once fault memories have been erased:

Similar screen appears.

Fig 10: Fault Memories Erased Display
Function ended appears at bottom of screen.
- Finish update of the Control Module by selecting the < button.
Similar screen appears.

Fig 11: Updated Software Level Display
New Control Module Part No: 7L0 907 383E and updated software level "8254" will appear at arrows.
Flash CD can now be removed from VAS 5051 or VAS 5052 Diagnostic tool.
- Print the "69-Trailer function" screen to verify Control Module update software level.
VAS 5051 will print to printer immediately.
VAS 5052 will hold the print until process is complete and then you may take the tester to the printer for printing the screen.
- Attach print to vehicle Repair Order.
- Select Diagnosis function "07 - Code control unit".
- Change coding from "1" to "2".
- Finish coding by selecting the < button.

Similar screen appears.

Fig 12: Selecting Diagnosis Function "07 - Code Control Unit"

NOTE: It is not generally necessary to encode the Control Module following the "update - Programming" (flashing procedure. However, you must set the readiness code.

Set readiness code.
With readiness code set:
Select "Go to" then select "Exit".

WARRANTY INFORMATION

When procedure applies to vehicles within the New Vehicle Limited Warranty:
Claim Type:	W2
Part Identifier:	9440
Labor Operation: Includes all operations necessary to complete Repair	94409999 Maximum A-Time allowed 60 TU
Claim Comment: Type "Per Technical Bulletin V010307" in comment section of Warranty claim.