Initiating and Checking Control Module Versions
Instrument Cluster On Board Diagnostic (OBD), Initiating - Checking Control Module Versions
NOTE: The following description refers only to the VAG 1551 Scan Tool (ST).
Test requirements:
- All fuses OK according to wiring diagram.
- Supply voltage OK (at least 9.0 volts).
- Connect VAG 1551 Scan Tool (ST). Refer to "Scan Tool Testing/Scan Tool Connecting and Initial Checks" under "Accessories and Optional Equipment/Antitheft and Alarm Systems/Alarm Module, (Vehicle Antitheft)". Testing and Inspection
- Switch on ignition.
Indicated on display:
VAG - On Board Diagnostic (080) HELP
1 - Rapid data transfer
2 - Blink code output
* Two operating modes are displayed alternately
NOTE:
- If nothing is indicated on display, check voltage supply for VAG 1551 scan tool according to wiring diagram.
- Additional instructions can be called up via the HELP button on the scan tool.
- The -> button is used for advancing through the program sequence.
- Function 00 "Automatic test sequence" can be performed in operating mode 1 "Rapid data transfer". This automatically checks all control modules installed in the vehicle.
- Switch printer on via the PRINT button (indicator lamp in button lights up).
- Press button -1- to select "Rapid data transfer" operating mode 1.
Indicated on display:
Rapid data transfer HELP
Enter address word XX
- Press buttons -1- and -7- to input address word 17, "instrument cluster".
Indicated on display:
Rapid data transfer Q
17 instrument cluster
- Press -Q- button to confirm input.
Indicated on display:
Rapid data transfer Q
Scan tool sends address word 17
Indicated on display (Values displayed here are examples only!!):
7D0920901E T4-KOMBIINSTR. VDO X18 ->
Coding 03281 WSC 00000
Top line Control module part number,
System identification
(Instrument cluster),
Manufacturer code:
VDO = VDO
Version number
Bottom line Coding number 1)
Work Shop Code2)
1) depends on engine, transmission and optional equipment
2) automatically stored in the control module upon entry into the installed system. But not for coding of control modules that have already been used.
If displayed:
Control module not responding! HELP
- Press the HELP button to print out an overview of all of the possible malfunction causes.
- Enter address word 17 for instrument cluster again after correcting malfunction and press Q button to confirm.
- Press -> button.
Indicated on display:
Rapid data transfer HELP
Select function XX
- Pressing the HELP button will print out an overview of all of the possible functions.
Available functions
01 - Check Control Module Versions
02 - Check DTC Memory
03 - Output Diagnostic Test Mode (DTM)
05 - Erase DTC Memory
06 - End Output
07 - Code control module
08 - Read measuring value block
10 - Adaptation
NOTE:
- All possible instrument cluster OBD functions are indicated above. Do not attempt to select additional functions printed out via the HELP button.
- After function is completed, the VAG 1551 returns to the start position:
Indicated on display:
Rapid data transfer HELP
Select function XX