Volkswagen Golf / Golf GTI / Jetta. Manual — part 228

24-166

- Press buttons -0-, -0- and -4- for "Display group

number 4" and confirm entry with -Q- button.

Read measured value block 4

1

2

3

4

Indicated on display: (1 to 4

display zones)

Evaluating display group 4, display zone 2

01-194

.

If the specification is not obtained:

Repair Manual, Electrical Equipment; Repair

Group 92

- Read figure displayed in display zone 2.

Specification: at least 11.500 V

- Press

button.

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

output" and confirm entry with -Q- button.

- Switch off ignition.

- Remove wiper arms and cowl panel:

- Connect VAG 1598/31 test box to control

module wiring harness. Engine Control Module
(ECM) -J220- remains disconnected.

Motronic Engine Control Module (ECM) -J220-

24-167

Checking voltage supply terminal 30

- Measure supply voltage between sockets 1 and

62, and 2 and 62 of test box using multimeter
and adapter cables from VAG 1594:

Specification: at least 11.5 V

If the specification is not obtained:

- Check wiring to fuse holder and Ground (GND)

connection of Motronic Engine Control Module
(ECM) -J220- referring to Electrical Wiring
Diagrams:

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

.

Motronic Engine Control Module (ECM) -J220-

24-168

Checking voltage supply terminal 15

- Measure supply voltage between test box

sockets using multimeter and adapter cables
from VAG 1594:

Sockets 1 and 3

Sockets 1 and 21

Sockets 2 and 3

Sockets 2 and 21

- Switch on ignition.

Specification: at least 11.5 V

- Switch off ignition.

Motronic Engine Control Module (ECM) -J220-

24-169

If the specification is not obtained:

- Check wiring to fuse holder and Ground (GND)

connection of Motronic Engine Control Module
(ECM) -J220- referring to Electrical Wiring
Diagrams:

Electrical Wiring Diagrams, Troubleshooting &

Component Locations

- Check wiring to Motronic Engine Control Module

(ECM) Power Supply Relay -J271- referring to
Electrical Wiring Diagrams:

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

.

Motronic Engine Control Module (ECM) -J220-