Volkswagen Golf / Golf GTI / Jetta. Manual — part 233

24-186

Thereafter the throttle valve is
opened a predetermined value. If
this value is achieved, the throttle
valve is again switched so that it is
not supplied with voltage. Now the
mechanical spring must pull the
throttle valve to the previously
learned emergency running position
within a predetermined period
(spring test).

Then the throttle valve is closed by
the throttle valve positioner and the
values, which are supplied by the
angle sensors in the Throttle Valve
Control Module -J338-, are stored by
the Motronic Engine Control Module
(ECM) -J220-.

If the Motronic Engine Control
Module (ECM) -J220- switches the
throttle valve positioner so that it is
without voltage during normal
operation, this is indicated by the
increased and hunting idle speed.
The engine reacts slowly to
accelerator changes.

- Check specifications in display

zones 3 and 4:

Display zone 3: 0 to 8

Display zone 4: ADP. runs, ADP.

OK.

System in basic setting 60

xxx %

xxx % 8

ADP. OK.

Indicated on display: (1 to 4

display zones)

Adaptation has been performed
successfully.

- Terminate engine basic setting at

earliest after 30 seconds by
pressing

button.

Motronic Engine Control Module (ECM) -J220-

24-187

To store the values:

- Press buttons -0- and -6- for function "End

output" and confirm entry with -Q- button.

- Switch off ignition.

Note:

If the basic setting of the control module is

aborted, the cause could be one of the following:

The requirements have not been fulfilled.

Throttle Valve Control Module -J338- or wiring

is faulty. Check

Page 24-59

.

After aborting, a Diagnostic Trouble Code (DTC)

is stored in DTC memory. When next switching
on ignition the basic setting is automatically
performed again.

Motronic Engine Control Module (ECM) -J220-

24-188

Additional signals,
checking

Vehicle Speed Signal,
checking

Special tools, materials and
equipment

Note:

All functions which could previously
be performed with VAG 1551/1552
can also be performed with the VAS
5051.

VAG 1551 Scan tool (or VAG

1552) with VAG 1551/3 adapter
cable

VAG 1526 or Fluke 83 Hand

multimeter or VAG 1715
multimeter

VAG 1594 Adapter set

VAG 1598/31 test box

Electrical Wiring Diagrams

Additional signals, checking

24-189

Test requirements

Repair Manual, Electrical

Equipment; Repair Group 90

The fuses must be OK.

The battery voltage must be at

least 11.5 V.

All electrical accessories, e.g.

lights and rear window defroster
must be switched off.

If the vehicle is equipped with air

conditioning, this must be
switched off.

Selector lever must be in

position "P" or "N" on vehicles
with an automatic transmission.

The speedometer must be OK.

Checking speedometer:

No Diagnostic Trouble Code

(DTC)s must be stored in DTC
memory

Page 01-23

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Additional signals, checking