Connecting VAG 1551 Scan Tool

V.A.G 1551 Scan Tool, Connecting And Selecting Engine Control Module

Special tools, test equipment and auxiliary items

V.A.G 1551 Scan Tool:

V.A.G 1551/3B Cable:

NOTE:
- The newest version of connection wire must always be used or else communication problems can occur between the scan tool and the control module.
- VAG 1552 mobile scan tool can be used instead of VAG 1551 scan tool, but no print-out can be created.
- All functions of the VAG 1551/1552 can also be performed with the tester VAS 5051. Connecting the VAS 5051. Connecting VAS 5051 Scan Tool

Test conditions






- The fuses No. 5, 10, 13, 28, 29, 32, 34 and 43 must be OK
- The battery voltage must be at least 11.5 V
- Ground connection between engine and body must be OK
- All electrical consumers, e.g. lights and rear window heating must be switched off
- If the vehicle is equipped with an air conditioner, this must be switched off
- Selector lever must be in position "P" or "N" on vehicles with an automatic gearbox.

Work sequence






- Connect scan tools V.A.G 1551 or 1552 with cable V.A.G 1551/3B.

After the scan tool has been connected (depending upon desired function):
- Switch ignition on
or
- Start engine, See Table "Selectable functions." Selectable Functions When Using VAG1551/1552 or VAS5051

NOTE:
- If the display remains blank, check voltage supply for diagnostic connection:
- If the display does not indicate as described in the work sequence:
- If due to an input malfunction "Error in communication link" is displayed, pull wire off scan tool, reconnect and repeat work step.

- Operate scan tool taking into account the information on the display.

Indicated on display

V.A.G - ON BOARD DIAGNOSTIC HELP
1 - Rapid data transfer*
2 - Flash code output*

* Appears alternately

- Press key 1 for "Rapid data transfer."
- Press keys 0 and 1 for address word "Engine electronics" and confirm entry with Q key.

The control module identification and coding are indicated on the display, e.g.:

06A906032E 19MATM10.HEX 161G 2730 ->
Coding 00000 WSC00000

- 06A 906 032 E = Part No. of the control module
- 19 MAT M10.HEX = Program level number
- 161 G = Cruise control
- 2730 = Manual gearbox (hand change). 2731 = Automatic gearbox
- Coding xxxxx = Control module coding
- WSC xxxxx = Workshop code from V.A.G 1551, of the workshops who carried out the last coding. (If the factory coding has not been changed, WSC 00000 appears)

NOTE: Replace control module if the control version displayed does not correspond to the vehicle.

An incorrectly coded engine control module leads to:
- Engine running malfunctions (gear change jerks, load change jerks, etc.)
- Increased fuel consumption
- Increased exhaust gas emissions
- DTCs stored in DTC memory which are not actually present
- Functions will not be performed (Oxygen sensor control, activation of the activated charcoal filter system, etc.)
- Reduced gearbox life.
- Press -> key.

Indicated on display

Rapid data transfer HELP
Select function XX


- For further measure see repair procedures