Scan Tool Connecting and Initial Checks
VAG 1551/1552 Scan Tool (ST), Connecting And Selecting Functions
NOTE:
- Print-out is not possible with VAG 1552 Scan Tool (ST).
- The following text display examples apply to VAG 1551 only. VAG 7552 operating sequence and displays may be different.
- Always ensure most recent VAG 1551/1552 program card version is used.
Requirements
- All fuses OK per wiring diagram.
- Battery voltage (B-) minimum 9 Volts.
Vehicles > 09.98
- Remove cover for Data Link Connector (DLC) next to instrument cluster.
- With ignition switched off, connect VAG 1551/1552 to Data Link Connector (DLC) using adapter cable VAG 1551/3 or VAG 1551/3B.
Vehicles 09.98 >
- Access Data Link Connector (DLC) under steering column.
NOTE: Illustration is for reference only. Steering column trim may not be as illustrated.
- Connect Scan Tool using adapter cable VAG 1551/3A or 1551/3B.
Indicated on display:
On Board Diagnostic (OBD)
1 - Rapid data transfer*
2 - Flash code output*
* Is displayed alternately
NOTE:
- Additional operating information can be displayed by pressing the HELP button on VAG 1551 Scan Tool.
- The -> button is used for moving forward within program.
- Pressing PRINT button switches on the printer (indicator lamp in button comes on).
- Switch on ignition.
Indicated on display
Rapid data transfer HELP
Insert address word XX
- Press button 1 for "Rapid data transfer" mode.
Indicated on display.
Rapid data transfer HELP
Input address word XX
- Press buttons -0- and -8- to select "AC/Heating Electronics" address word 08.
Indicated on display.
Rapid data transfer Q
08 AC/Heating Electronics
- Press -Q- button to confirm input.
Indicated on display.
Rapid data transfer
Tester sends address word 08
and shortly thereafter:
Indicated on display
701 907 044 CLIMATRONIC VXX
Coding XXXXX WSC XXXXXXX
- 701 906 044 control module identification (example only)
- Climatronic = System designation
- VXX = Software version of control module
- Coding, vehicles > 09.98 Climatronic Control Module -J255- Coding (Function 07)
- Coding, vehicles 09.98 > Climatronic Control Module -J255- Coding (Function 07)
- WSC = Workshop code
NOTE:
- A blinking A/C Control Head display indicates that, either coding is necessary or a fault is present in the system.
- improper control module coding results in incorrect blower output.
If one of the following messages are displayed, the possible causes can be printed out by pressing the HELP button.
Rapid data transfer HELP
Control module does not answer!
The ignition must be switched on!
Rapid data transfer HELP
K wire not switching to B+!
Check VAG 1551 adapter cables and vehicle wiring to Data Link Connector (DLC) using wiring diagram.
Rapid data transfer ->
No signal from control module!
If this display appears at the beginning of or during the OBD program, malfunctions have occurred and data transfer is no longer possible between the VAG 1551 Scan tool and A/C control module.
Rapid data transfer ->
Error in communication link
- After repairing the possible causes of the malfunction, once again select address word 08 for "AC/Heating electronics" and confirm entry with -Q- button.
Indicated on display after entering the address word 08:
Rapid data transfer Q
08 AC/Heating Electronics
- Press -Q- button to confirm input.
Indicated on display
Rapid data transfer
Tester sends address word 08
Control module identification is displayed
701 907 044 CLIMATRONIC VXX ->
Coding 00001 WSC XXXXXXX
- Press -> button.
Indicated on display (function selection, e.g. 02 - Checking DTC memory)
Rapid data transfer HELP
select function XX
NOTE: A list of available functions is printed out after pressing the HELP button