Jetta L4-1.8L Turbo (AWP) (2004)
speed. (Connecting scan tool and selecting engine control module). Refer to "VAG1551 Scan Tool See: Powertrain Management/Computers and
Control Systems/Tools and Equipment
Indicated on display:
Rapid data transfer
HELP
Select function XX
-
Press keys 0 and 8 for function "Read measured value block" and confirm entry with Q key.
Indicated on display
Read measured value block
HELP
Input display group number XXX
-
Press keys 0, 0 and 4 for "Display group number 4" and confirm entry with Q key.
Indicated on display: (1 to 4 = Display zones)
Read measured value block 4
->
1
2
3
4
-
Read off figure displayed in display zone 2.
Specification: At least 11.5 V
-
Press -> key.
-
Press keys 0 and 6 for "End data transfer" function and confirm input with Q key.
-
Switch ignition off.
If the specification is not attained:
-
Connect VAG1598/31 test box to control module wiring harness. Engine control module remains disconnected.
Checking voltage supply terminal 30
-
Measure supply voltage between test box sockets 1+62 using multimeter and adapter cables from VAG1594:
Specification: at least 11.5 V
If the specification is not attained:
-
Check wiring connections to relay plate according to wiring diagram.
Checking voltage supply terminal 15
-
Measure supply voltage with multimeter and aux. cables from VAG1594 between test box sockets 2 and 3:
-
Switch ignition on.
Specification: min. 11.5 V
If the specification is not attained:
-
Check wiring connections to relay plate according to wiring diagram.
With Generic Scan Tool