Connecting VAG 1551/1552
VAG 1551/1552 SCAN TOOL (ST), CONNECTING AND SELECTING ENGINE ELECTRONICS ADDRESS WORD 01Address Word 01 functions are only accessable with the VAG 1551 Scan Tool or the VAG 1552 Scan Tool. Diagnosis with a Generic Scan Tool is possible using the diagnostic modes of Address Word 33 . The VAG 1551 and 1552 Scan Tools can also access Address Word 33 diagnostic modes. Additional functions of Address Word 01 are covered in: Diagnosis With Scan Tool, Address Word 01.
Test requirements:
- Fuses for engine electronics OK
- Fuel pump relay OK
- Ground connections OK
- Open front storage compartment (center console) and remove cover for data link connectors.
- Connect VAG 1551 scan tool with adapter cable VAG 1551/3 to data link connector.
Indicated on display (Operating modes 1 and 2 are displayed alternately).
V.A.G On Board Diagnostic (OBD) HELP
1 - Rapid data transfer
2 - Blink code output
NOTE:
- If there is no display, check the voltage supply for the data link connector
- Additional operating instructions can be obtained by using the VAG 1551 scan tool HELP button.
- The button is used to advance to the next program step.
For the function:
02: Check DTC Memory - Let engine idle, or, crank engine with starter for at least 5 seconds without switching ignition off
03: Output Diagnostic - Switch ignition on
Test Mode
04: Basic Setting - Let engine run or switch ignition on
07: Code Control - Switch ignition on
Module
08: Read Measuring - Let engine run or switch ignition on
Value Block
- Switch printer on with PRINT button (indicator light in the button lights up).
- Press button -1- for "rapid data transfer" operating mode.
Indicated on display
Rapid data transfer HELP
Insert address word XX
NOTE: After inserting address word 00 and pressing -0- button to confirm input, an automatic test sequence is carried out (checks DTC memory of all systems with rapid data transfer).
- Press buttons -0- and -1- to insert the "Engine Electronics" address word 01.
Indicated on display
Rapid data transfer Q
01 - Engine Electronics
- Press -Q- button to confirm input.
Indicated on display
Rapid data transfer
Scan Tool sends address word 01
If the following is shown on the display:
Rapid data transfer HELP
Control module does not answer
- A list of possible malfunction causes can be printed out by pressing the HELP button.
NOTE:
- Check data link connector/engine control module wiring connections.
- Engine control module faulty Diagnostic Trouble Code (DTC) table.
If the following is shown on the display:
Rapid data transfer HELP
Error in communication link
NOTE:
- On vehicles with several On Board Diagnostic (OBD) systems, check wiring connection between the individual systems.
- For vehicles with On Board Diagnostic (OBD) capability for engine electronics only, the engine control module is faulty Diagnostic Trouble Code (DTC) table.
If one of the following two problems is shown on the display
Rapid data transfer HELP
K wire not switching to Ground
Rapid data transfer HELP
K wire not switching to B+
- A list of possible malfunction causes can be printed out by pressing the HELP button.
NOTE: Check data link connector/engine control module wiring connections.
- After the malfunction cause is repaired, insert address word 01 again and press -0- button to confirm input.
The control module identification and the coding are shown on the display:
8D0 906 266A 2.8I V6/2V MPI OBD2 D01
Coding 09042 WSC 06388
- Engine control module replacement part no. 8DO 906 266A For current engine control module version Parts catalog microfiche
- Engine displacement: 2.8 liters
- Engine construction type: V-engine, 6-cylinder
- Valves per cylinder: 2 valves
- Fuel injection system: Multiport Fuel Injection (MFI)
- Engine control module software version: OBD2, EPROM-status of control module
- Engine control module hardware and software version: D__ = engine control module program status
- Engine control module coding: e.g. 09042 coding table.
- Workshop code: WSC 06388 (where the VAG 1551 scan tool was used for the last coding and/or adaptation)
NOTE: If the engine control module version that corresponds to the vehicle is not displayed, replace engine control module.
Incorrect engine control module coding leads to:
- Driving performance problems (jerky shifting, abrupt load change, etc.)
- Increased fuel consumption
- Elevated exhaust gas values
- Reduction in transmission service life
- Malfunctions not present are stored in DTC memory
- Functions are not carried out (oxygen sensor control, actuation of EVAP canister system, etc.)
- Press button.
Indicated on display
Rapid data transfer HELP
Select function XX
NOTE: After pressing the HELP button, an overview of the possible functions is printed out.