Central Locking System OBD, Initiating

Central Locking System OBD, Initiating

Test Prerequisites
- Voltage supply and fuses for the respective system OK.
- To initiate the On Board Diagnosis (OBD) the ignition must be switched on "Terminal 15 on".

NOTE:
- If the display remains blank, check VAG1551 voltage supply referring to Electrical Wiring Diagram.
- Additional operating information can be printed out depending on the program by pressing the HELP button of VAG1551.
- The arrowright button serves to advance the program sequence.
- The PRINT button is used for switching on the printer (warning lamp in key lights up).
- Connecting scan tool - Scan Tool, Connecting.

- Switch on ignition.
- Switch on printer with the Print button (indicator lamp in button lights up).

Indicated on display:

Rapid data transfer HELP
Enter address word XX

Address Word for Central Locking

Indicated on display:

Rapid data transfer HELP
Enter address word XX

- Press buttons 3 and 5.

Indicated on display after entering address word 35:

Rapid data transfer Q
35 Central locking

- Confirm entry with Q button.

and the following is indicated on display:

Indicated on display:

Rapid data transfer
Tester sends address word 35

The scan tool VAG1551 display will show the control unit identification, e.g.:

1C0962258F Central locking 0044 arrowright
Coding 00256 WSC 06037

- Press arrowright button.

Indicated on display:

Rapid data transfer HELP
Select function XX

NOTE: If one of the malfunction messages opposite appears in the display, the possible causes of the malfunction can be printed out with the HELP button.

Rapid data transfer HELP
Control unit does not answer

- When doing this the ignition must be switched on.

Rapid data transfer HELP
K wire not switching to positive.

- Malfunctions have occurred at the start of or during the program (external interference?).

Rapid data transfer arrowright
No signal from control unit.

- Check diagnosis wires as well as voltage supply and ground (GND) connection.

Rapid data transfer arrowright
Fault in communication build up

- After correcting the possible causes of the fault, once again enter the address word 35 for "Central locking" and confirm with the Q button.

Indicated on display after entering the address word 35:

Rapid data transfer
Tester sends address word 35

The scan tool VAG1551 display will show the control unit identification, e.g.:

1C0962258F Central locking 0044 arrowright
Coding 00256 WSC 06037

- Press arrowright button.

Indicated on display:

Rapid data transfer HELP
Select function XX