Volkswagen Golf / Golf GTI / Jetta. Manual — part 178

01-254

Display group 71 - Reducing emissions - Evaporative Emissions (EVAP) Canister
system diagnosis (leak diagnosis)

Control module in function "04-Basic setting"

Engine running at idle

System in basic
setting 71

Indicated on display

Text Text Text Text

1

2

3

4

Display zones

Specification Evaluation

Result of Evaporative
Emissions (EVAP) Canister
system diagnosis (leak
diagnosis)

(Test OFF / Test ON /
Abort / Syst. OK. / Syst.
n.OK.)

Syst. OK.

Page 01-

255

Diagnosis status

(Syst. Test / Check / Check END)

Check END

---

Malfunction message

(Sm. leak / Lg. leak / Abort)

---

---

Reed terminal condition

(Reed op. / Reed cl.)

Reed op.

---

Measured value (data) blocks

01-255

Evaluating display group 71, display zone 4 - Evaporative Emissions (EVAP)
Canister diagnosis (leak diagnosis)

Appears on display

Possible cause

Corrective action

Check not performed
or has not finished:
Test OFF

DTC stored in DTC memory

- Check DTC memory

Page 01-23

, DTC memory,

checking and erasing

Requirements to complete

the diagnosis have not been
achieved

- Check test conditions,
perform diagnosis again

Continuation

next Page

Measured value (data) blocks

01-256

Appears on

display

Possible cause

Corrective action

Functions Leak
diagnosis not OK.:
Syst. n.OK.

DTC stored in DTC

memory

- Check DTC memory

Page 01-

23

, DTC memory, checking and

erasing

Evaporative Emissions

(EVAP) Canister
system leaking

Repair Manual, 2.8 Liter VR6 4V

Engine Mechanical, Engine Code
(s): BDF; Repair Group 20

- Check Evaporative Emissions
(EVAP) Canister system for leaks:

Leak Detection Pump

(LDP) -V144- faulty

Repair Manual, 2.8 Liter VR6 4V

Engine Mechanical, Engine Code
(s): BDF; Repair Group 20

- Check Leak Detection Pump
(LDP) -V144-

Page 01-100

,

Output Diagnosis Test Mode
(DTM)

- Replace Leak Detection Pump
(LDP) -V144-:

- Perform diagnosis again

Measured value (data) blocks

01-257

Display group 77 - Reducing emissions - Secondary air system diagnosis

Control module in function "04-Basic setting"

Engine running at idle

System in basic
setting 77

Indicated on display

xxxx
rpm

xx.x

g/s

xxx.x

%

Text

1

2

3

4

Display zones

Specification

Evaluation

Result of secondary air
system diagnosis

(Test OFF / Test ON /
Abort / Syst. OK. / Syst.
n.OK.)

Syst. OK.

Page 01-

258

Air mass, secondary air system -100.0...100.0

%

---

Air mass drawn in

3.0...5.0 g/s

Page 01-

191

Engine speed (idle speed)

640...720 rpm

Page 01-

188

Note on display zone 3:

The total range is given.

Measured value (data) blocks