Scan Tool Connecting and Initial Checks
VAG 1551/1552 Scan Tool (ST), connecting
Special tools, workshop equipment, testers, measuring instruments and auxiliary items required
- VAG 1551 Scan Tool
NOTE: The VAG 1552 can be used instead of the VAG 1551 Scan Tool; however, a print-out is not possible.
- VAG 1551/3A Cable
Requirements
- Fuses 10, 28, 29, 32, 34 and 43 must be OK.
- ALL electrical consumers switched OFF.
- A/C switched OFF (if installed)
- Automatic Transmission Range selector in "P" or "N" position
- Battery Voltage must be 11.5 Volts minimum.
- Ground connection between engine (on transmission bell housing) and body (below battery) OK.
Work Sequence
- Connect VAG 1551/1552 Scan Tool using VAG 1551/3 adaptor cable
After Scan Tool is connected:
- Depending upon desired function: Switch ON ignition or start engine.
NOTE:
- The DLC may be found in the center console on some vehicles.
- If display remains blank, check Voltage supply for diagnostic connection See Troubleshooting program.
- If due to an input malfunction "malfunction in data transfer!" 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 1)
V.A.G - ON BOARD DIAGNOSTIC HELP
1 - Rapid data transfer
2 - Blink code output
1) Operating modes 1 and 2 are displayed alternately
- Operate Scan Tool taking displayed information into account.
- Press 1 button to select "Rapid data transfer."
Indicated on display
Rapid data transfer HELP
Select function XX
- Press 0 and 1 buttons to select "Engine electronics" address word 01.
Indicated on display (example only)
06A906018AB Motronic M5.9.2 HS V06 ->
Coding 00041 WSC 00066
Control Module identification and coding are shown on the VAG 1551 display as shown in the example
- 06A 906 018 AB
- Engine Control Module Part No. (always see parts catalog for latest version)
- Motronic = System identification
- M5.9.2 = System version
- HS = Manual transmission, AT = Automatic transmission
- V06 = Program level number
- Coding xxxxx = Control Module coding
- WSC xxxxx = Workshop code from VAG 1551, of workshop who performed last coding. (If factory coding has not been changed, WSC 00000 appears)
NOTE: Replace the Control Module if the displayed version does not correspond with vehicle.
An incorrectly coded Engine Control Module leads to:
- Engine running malfunctions (shift jerks, load change, etc.)
- Increased fuel consumption
- Increased exhaust gas emissions
- Malfunctions stored in DTC memory that do not really exist.
- Certain functions will not be performed (Oxygen sensor regulation, activation of the Evaporative emissions system).
- Reduced transmission life
If coding differs from vehicle version:
- Check Control Module coding.
- Press -> button.
Indicated on display (example only)
Rapid data transfer HELP
Select function XX