Volkswagen Golf / Golf GTI / Jetta. Manual — part 243

24-226

If the resistance measurement is not within

the specified range:

- Replace Motronic Engine Control Module (ECM)

-J220-

Page 24-173

.

- Check DTC memory, repair malfunctions if

necessary and then erase DTC memory

Page

01-23

.

- Erase learned values and adapt Motronic

Engine Control Module (ECM) -J220- again

Page 24-182

.

- Read readiness code

Page 01-146

. If DTC

memory has been erased or Motronic Engine
Control Module (ECM) -J220- was disconnected
from battery positive (B+), readiness code must
be generated again

Page 01-149

.

Additional signals, checking

24-227

If the resistance value is within the specified

range:

- Repair Diagnostic Trouble Code (DTC):

Electrical Wiring Diagrams, Troubleshooting &

Component Locations

- Check DTC memory, repair malfunctions if

necessary and then erase DTC memory

Page

01-23

.

- Erase learned values and adapt Motronic

Engine Control Module (ECM) -J220- again

Page 24-182

.

- Read readiness code

Page 01-146

. If DTC

memory has been erased or Motronic Engine
Control Module (ECM) -J220- was disconnected
from battery positive (B+), readiness code must
be generated again

Page 01-149

.

Additional signals, checking

28-1

Ignition system, servicing

General notes on ignition system

Note:

Only the components which specifically relate

to the ignition system are dealt with here. For
the other components of the injection and
ignition system

Repair Group 24.

The Engine Control Module (ECM) is equipped

with On Board Diagnostic (OBD).

Components marked with * are checked via On

Board Diagnostic (OBD)

Page 01-23

.

Components marked with **can be checked via

Output Diagnostic Test Mode (DTM)

Page

01-100

.

For trouble-free operation of the electrical

components, a voltage of at least 11.5 V is
necessary.

Disconnecting and connecting the battery must

only be done with the ignition switched off,
otherwise the Engine Control Module (ECM)
could be damaged.

Check DTC memory before carrying out repairs

and for troubleshooting

Page 01-23

.

During some checks it is possible that the

control module will detect and store a
Diagnostic Trouble Code (DTC). Therefore after
completing all checks and repairs the DTC
memory must be checked and if necessary
erased

Page 01-23

, and then generate the

readiness code

Page 01-149

.

Ignition system, servicing

28-2

If the engine starts, runs for a short period and

then stops, after troubleshooting, repairs or
component tests, then the malfunction may lie
with the Immobilizer which is blocking the
Engine Control Module (ECM). In such cases
the DTC memory must be checked and, if
necessary, the control module adapted.

Repair Manual, Electrical Equipment On

Board Diagnostic (OBD);Repair Group 01

Safety precautions

Page 28-12

.

Test data, spark plugs

Page 28-15

.

Ignition system, servicing