Connecting VAS 5051/VAG1551 Scan Tool
VAS5051 Tester Or VAG1551 Scan Tool, Connecting And Selecting Functions
Test requirements:
- Fuses for engine electronics OK
- Fuel Pump (FP) relay OK Testing and Inspection
- Battery voltage at least 12.7 V
- Ground (GND) connections at engine and transmission OK
Procedure
- Connect VAS5051 tester to vehicle with VAS5051/1 diagnostic wire. Alternately, VAG1551 Scan Tool (ST) can also be attached using VAG1551/3A adapter.
NOTE: Data Link Connector (DLC) is located in front left knee bolster.
WARNING!
Observe safety precautions.
NOTE: The following description only explains implementation of On Board Diagnostic using VAG1551 Scan tool. When using the VAS5051 tester observe instructions in the tester's user manual.
Indicated on display
VAG - On Board Diagnostic (OBD) HELP
1 - Rapid data transfer 1)
2 - Blink code output 1)
1) Operating modes 1 and 2 are displayed alternately
NOTE:
If nothing appears in display:
- Perform troubleshooting procedure after "troubleshooting procedure leak test":
Depending on desired function, Selectable Functions When Using VAG1551/1552 or VAS5051
- Switch ignition on.
or
- Start engine.
- Press -Print- button to turn on Scan Tool (ST) printer. Indicator lamp in button must light up.
- Press button 1 to select "Rapid data transfer" operating mode 1.
When indicated on display
Rapid data transfer HELP
Enter address word XX
NOTE: The address word 00 initiates the automatic test sequence, i.e. it results in a DTC check on all OBD capable systems in the vehicle via rapid data transfer
- Press buttons -0- and -1- to select "engine electronics" and press -Q- button to confirm input.
VAG1551 Scan Tool (ST) display indicates control module identification, e.g.
4B0906018Q 1.8L R4/5VT G 0008 ->
Coding 07551 WSC 12345
NOTE: Control module identification can be printed by pressing the PRINT key on the VAG1551 scan tool.
Control module identification (example)
- 4B0906018Q part number; allocation
- 1.8L Engine displacement
- R4/5VT Inline engine, 4 cylinders/5 valve turbo
- "G" i.e no indication Vehicle with or without cruise control system
- 0008 Data version (software version) of control module
- Coding 07551 Control module coding
- WSC 12345 Factory identification of VAG1551, with which the last coding was performed
- Press -> button.
Indicated on display (function selection)
Rapid data transfer HELP
Select function XX
NOTE:
- It will be possible to display the control module identification again after pressing buttons -0- and -1- to select "Check Control Module Versions" and confirming with the -Q- button.
- When indicated on display
Rapid data transfer HELP
Control module not responding!
- Perform troubleshooting procedure after "troubleshooting procedure leak test":
Rapid data transfer HELP
K-wire does not switch to Ground
Rapid data transfer HELP
K-wire does not switch to B+
Rapid data transfer HELP
Malfunction In communication set-up