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Home >> Volkswagen >> 2005 >> Jetta TDI, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (1.9L - Fuel Injection Glow Plug, Engine Code ALH, From My 2002 (A4 Platform)) >> 01 On Board Diagnostic (OBD) >> On Board Diagnostic >> Scan Tool VAG1551 , connecting >> Work sequence

Work sequence

WARNING: This page is about a different variant/trim than selected.
Fig 1: Identifying Scan Tool VAG 1551 And DLC
GW00000944Courtesy of VOLKSWAGEN UNITED STATES, INC.

After connecting Scan Tool (ST):

Depending upon desired function:

or

NOTE:
  • If display remains blank, check voltage supply for diagnostic connection: → Electrical Wiring Diagrams, Troubleshooting and Component Locations
  • If display does not indicate as described in work sequence: Scan Tool (ST) operating instructions
  • If due to an input malfunction "malfunction in data transfer!" is displayed, pull wire off Scan Tool (ST), reconnect and repeat step.

Indicated on display:

VAG - ON BOARD DIAGNOSTIC HELP
1 - Rapid data transfer*
VAG - ON BOARD DIAGNOSTIC HELP
2 - Blink code output*

* Appears alternately

Scan Tool (ST) VAG1551 display will show control module identification, e.g.:

038906012FD 1.9l R4 EDC G00AG 1813 → Coding XXXXX WSC XXXXX

Only for vehicles from model year 2002 → 

Indicated on display:

3VWSP69M92M000069 VWZ7Z0A3452852 →

Continued for all vehicles 

Indicated on display:

Rapid data transfer HELP
Select function XX