Volkswagen Golf / Golf GTI / Jetta. Manual — part 157
01-170
System in basic setting 216
1
2
3
4
Indicated on display: (1...4
display
zones)
If the display does not indicate as
described:
If the display indicates as described:
- Observe figure displayed in
display zone 4.
Specification: xxxxx100
- Allow engine to run at idle until
display zone 4 displays (after
approx. 30 seconds):
Specification: xxxx1100.
- Press
button.
- Check DTC memory, repair
Diagnostic Trouble Codes (DTCs)
if necessary and then erase DTC
memory
Page 01-23
, DTC
memory, checking and erasing.
- Read readiness code
Page 01-
146
. If the DTC memory has
been erased or the Motronic
Engine Control Module (ECM) -
J220- was disconnected from
battery (B+) positive, the
readiness code must be
generated again
Page 01-149
.
- Press -C- button.
Readiness code
01-171
Work step 14: Evaporative
Emissions (EVAP) Canister
system solenoid valve 1 diagnosis
(Tank ventilation system)
Basic setting
Input display group number XXX
Indicated on display:
Note:
The engine must not be loaded
during this diagnosis, if this occurs
the diagnosis will be interrupted and
will not start again until the engine is
revved-up.
- Press buttons -0-, -7- and -0- for
"Display group number 70" and
confirm entry with -Q- button.
System in basic setting 70
1
2
3
4
Indicated on display: (1 to 4
display zones)
If the diagnosis is initiated by the
Motronic Engine Control Module
(ECM) -J220- the display in display
zone 4 jumps from "Test OFF" to
"Test ON".
Note:
This process can take approx. 30
seconds.
- Leave engine running at idle until
display zone 4 displays:
Specification: TBV OK..
Readiness code
01-172
Note:
TBV stands for Evaporative Emission (EVAP)
Canister Purge RegulatorValve -N80-.
If "TBV n. OK." appears in display zone 4:
- Press
button.
- Check DTC memory, repair Diagnostic Trouble
Codes (DTCs) if necessary and then erase DTC
memory
Page 01-23
, DTC memory, checking
and erasing.
- Read readiness code
Page 01-146
. If the
DTC memory has been erased or the Motronic
Engine Control Module (ECM) -J220- was
disconnected from battery (B+) positive, the
readiness code must be generated again
Page 01-149
.
If no DTC is stored:
- Press buttons -0- and -6- for the function "End
output" and confirm entry with the -Q- button.
- Switch off ignition.
- Check breather lines to EVAP canister (may be
kinked).
Readiness code
01-173
- Check EVAP canister system for
leaks:
Repair Manual, 2.8 Liter VR6 4V
Engine Mechanical, Engine Code(s):
BDF; Repair Group 20
If "TBV OK." appears in display zone
4:
- Press -C- button.
Work step 15: Secondary air
system diagnosis
Basic setting
Input display group number XXX
Indicated on display:
Note:
The engine must not be loaded
during this diagnosis, if this occurs
the diagnosis will be aborted and will
not start again until the engine is
revved-up.
- Press buttons -0, -7- and -7- for
"Display group number 77" and
confirm entry with -Q- button.
System in basic setting 77
1
2
3
4
Indicated on display: (1 to 4
display zones)
If the diagnosis is initiated by the
Motronic Engine Control Module
(ECM) -J220- the display in display
zone 4 jumps from "Test OFF" to
"Test ON".
Note:
This process can take approx. 40
seconds.
Readiness code
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