Connecting fault reader V.A.G 1551 and selecting engine control unit — VW

Special tools, workshop equipment, testers, measuring instruments and auxiliary items required

V.A.G 1551 Fault reader

Note:

The vehicle system tester V.A.G 1552 can be used instead of the fault reader V.A.G 1551, however a print-out is not possible.

All functions of V.A.G 1551/1552 can also be carried out with the new tester V.A.S 5051. Connecting VAS 5051 =>Page
01-14.

V.A.G 1551/3 Cable

Test conditions

All fuses must be OK.
The battery voltage must be at least 11.5 V.
Earth connection between engine and body must be OK.

Work sequence

Connect fault reader V.A.G 1551 (V.A.G 1552) with cable V.A.G 1551/3.

After the fault reader has been connected:

Depending upon desired function:
Switch ignition on or
Start engine => Page
01-8
, Table "Selectable functions".

The remaining work sequence is fundamentally the same as for the Golf 1998 ä, Bora 1999 ä; Motronic injection and ignition system (6 cylinder engine) with engine code AUE.

Notes:

If the display remains blank, check voltage supply for diagnostic connection:

=> Current flow diagrams, Electrical fault finding and Fitting locations

If the display does not indicate as described in the work sequence:

=> Fault reader operating instructions

If due to an input fault "Fault in the data transfer!" is displayed, pull wire off fault reader, reconnect and repeat work step.

Operate fault reader taking into account the information on the display:

V.A.G - SELF DIAGNOSIS
HELP
1 - Rapid data transfer*
2 - Flash code output*
Indicated on display:

* Appears alternately

Operate fault reader taking into account the information on the display:
Press key 1 for "Rapid data transfer".
Press keys 0 and 1 for address word "Engine electronics" and confirm entry with Q key.

022906032B
MOTRONIC ME7.1 (G)
V06 ⇒
Coding 00132
WSC 00000
The control unit identification and coding are indicated on the display, e.g.:

022 906 032 C = Part No. of the control unit (for latest control unit version see parts catalogue)

... 032 B = Manual gearbox (hand change)

MOTRONIC ME7.1 = System designation (Motronic)
G = Cruise control system
V06 = Programme level number
Coding 00132 = Control unit coding, coding variants of engine control unit => Page
24-170.
WSC 00000 = Workshop code from V.A.G 1551 with which the last coding was carried out. (If the factory coding has not been changed, WSC 00000 appears.)

Notes:

Replace control unit if the control version displayed does not correspond to the vehicle

=> Page
24-166.

An incorrectly coded engine control unit leads to:

Engine running faults (gear change jerks, load change jerks, etc.)

Increased fuel consumption
Increased exhaust gas emissions
Faults stored in fault memory which are not actually present
Functions will not be performed (Lambda regulation, activation of the activated charcoal filter system, etc.).
Reduced gearbox life

If the coding differs from the vehicle version, then:

Checking control unit coding => Page
24-169, coding engine control unit
Press ⇒key.

Rapid data transfer
HELP
Select function XXX
Indicated on display:

Further measures see repair procedures.