Connecting and Testing VAG 1551/VAG 1552
VAG 1551/1552 Scan Tool Connecting & Selecting Engine Electronics Address Word 01
- Fuses for engine electronics OK
- Fuel pump relay OK
- Ground connections OK Refer to "Malfunction recognition repair in On Board Diagnostic General" [1][2]Description of On-Board Diagnostics
Connecting -m.y. 1996
- Open back seat ash tray (center console) and remove cover for data link connector.
- Connect VAG 1551/1552 scan tool with adapter cable VAG 1551/3 to the data link connector
Connecting -m.y. 1997
NOTE: The DLC is located below the driver's knee bar to the left of the steering wheel.
- Connect VAG 1551 Or VAG 1552 Scan Tool (ST) with VAG 1551/3 adapter to Data Link Connector (DLC).
All vehicles
Indicated on display 1)
VAG On Board Diagnostic (OBD) HELP
1 - Rapid data transfer
2 - Blink code output
1) Operating modes 1 and 2 are displayed alternately.
NOTE:
- If there is no display, check voltage supply for 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 Test Mode - Switch ignition on
04: Basic Setting - Let engine run or switch ignition on
07: Code Control Module - Switch ignition on
08: Read Measuring Value Block - Let engine run or switch ignition on
- 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 -Q- 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 connection.
- Engine control module faulty
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 only MFI (Engine Electronics) On Board Diagnostic (OBD) capability, the engine control module is faulty
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 connection.
- After the malfunction cause is repaired, insert address word 01 again and press -Q- button to confirm input.
The control module identification and the coding are shown on the display:
8D0906200 2.8 V6/2V MFI OBD2 D01
coding 01051 WSC 06388
- Engine control module replacement part no.8D0906266 For current engine control module version.
- 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__ Control module program status
- Engine control module coding: 01051 See Diagnostic Trouble Code (DTC) table,
- VAG plant number: 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.
Test Box VAG 1598/19, Connecting
CAUTION!
Wait at least 30 seconds after the ignition has been switched off before disconnecting the ECM harness connector.
NOTE: By disconnecting the ECM, the permanent voltage supply is disconnected and therefore the learning values, DTC memory and readiness code are erased.
- Switch ignition off.
- Remove ECM.
- Connect test box VAG 1598/19 to wiring harness.
NOTE: Terminal assignments of the connectors A, B, C, D and E are identical to the socket assignments of the test box.