Volkswagen Golf / Golf GTI / Jetta. Manual — part 132

01-107

If the solenoid valve does not click:

- Disconnect 2-pin connector from

Evaporative Emission (EVAP)
Canister Purge Regulator Valve -
N80- (arrow).

LED flashes:

- Connect LED test light VAG 1527

to disconnected connector using
adapter cables from VAG 1594.

LED must flash (bright/darker)

- Press -C- button to abort output

Diagnosis Test Mode (DTM).

Output Diagnosis Test Mode (DTM)

01-108

Output Diagnosis Test Mode was aborted

Indicated on display:

LED does not flash:

- Switch off ignition.

- Replace Evaporative Emission

(EVAP) Canister Purge
RegulatorValve -N80-.

- 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 to abort output

Diagnosis Test Mode (DTM).

Output Diagnosis Test Mode was aborted

Indicated on display:

Repair Manual, Electrical

Equipment; Repair Group 92

- Switch off ignition.

- Remove wiper arms and cowl

panel:

Output Diagnosis Test Mode (DTM)

01-109

- Connect test box VAG 1598/31 to

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

If no wiring malfunction is found:

- Check wire for open circuit

between test box socket 64 and
2-pin connector terminal 2
referring to Electrical Wiring
Diagrams.

Wire resistance: max. 1.5

- Additionally check wire for short

to battery positive and Ground
(GND).

Specification:

- Check wire for open circuit

between 2-pin connector terminal
1 and Fuel Pump (FP) relay -J17-
referring to Electrical Wiring
Diagrams.

Wire resistance: max. 1.5

- Replace Motronic Engine Control

Module (ECM) -J220-

Page 24-

173

.

Output Diagnosis Test Mode (DTM)

01-110

- Check DTC memory, repair Diagnostic Trouble

Codes (DTCs) if necessary and then erase DTC
memory

Page 01-23

, DTC memory, checking

and erasing.

- Erase learned values and adapt Motronic

Engine Control Module (ECM) -J220- again

Page 24-182

.

- 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

.

2. Activating Secondary Air Injection (AIR)
Solenoid Valve -N112-:

- Press

button.

Output Diagnosis Test Mode (DTM)

Secondary Air Injection Solenoid Valve

Indicated on display:

The Secondary Air Injection (AIR) Solenoid

Valve must click, until the next final control
element is activated by pressing

button.

Output Diagnosis Test Mode (DTM)