Volkswagen Golf / Golf GTI / Golf Variant. Manual - part 127

DTC /

Descrip‐

tion

Monitor

Strategy

Descrip‐

tion

Malfunction Crite‐

ria and Threshold

Value

Secondary Parame‐

ters with Enable

Conditions

Monitoring

Time

Length

MIL Il‐

lum.

Component Diag‐

nostic Procedure

• Canister load <=

n.a. [-]

• Evap purge flow

n.a.

• Or
• Canister load cal‐

culation n.a.

• Evap purge flow

n.a.

• Or
• Evap purge valve

n.a.

• Depending on

canister purge

closing:

• Canister purge

(conditions) n.a.

• Canister purge

valve ( closing

time ) n.a.

• And
• Choice of:
• Evap purge valve

n.a. or evap

purge valve n.a.

and modeled

MAF-integral >

0.0 g

• Depending on

transmission

type:

• For MT
• Integrated MAF

per cylinder >=

0.00 kg

• For AT
• Integrated MAF

per cylinder >=

0.00 kg

• For DCT
• Integrated MAF

per cylinder >=

0.00 kg

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing    

181

DTC /

Descrip‐

tion

Monitor

Strategy

Descrip‐

tion

Malfunction Crite‐

ria and Threshold

Value

Secondary Parame‐

ters with Enable

Conditions

Monitoring

Time

Length

MIL Il‐

lum.

Component Diag‐

nostic Procedure

P2271

O2 Sen‐

sor Sig‐

nal

Biased/

Stuck

Rich

Bank 1

Sensor

2

Oxygen

Sensors

Rear Sig‐

nal

Range

Check

• Max. O2S rear

voltage > 0.87

V

• General condi‐

tions:

• Close the gap

stimulation re‐

quest active

• Vehicle speed >=

6 mph

• Catalyst over‐

heating protec‐

tion not active

• Turbine over‐

heating protec‐

tion not active

• O2S rear ready
• O2S front ready
• ECT @ cylinder

head > 60° C

• Modeled catalyst

temperature 470

– 780° C

• Difference be‐

tween dynamic

and stationary

catalyst tempera‐

ture -306 – 304° C

• Modeled catalyst

temperature once

after engine start

> 550° C

• Integrated MAF,

catalyst temp.

conditions fulfil‐

led >= 0.0 g

• Modeled EGT @

O2S rear <= 900°

C

• MAF per cylinder

30.0 – 200.0 kg/h

• MAF per cylinder

per stroke, lower

range >= 89.99

mg/rev

• MAF per cylinder

per stroke, upper

range <= 750.0

mg/rev

• And
• Low dynamic

conditions devia‐

tion actual

• And

• 60.0 –

70.0 s

• Once /

DCY

• 2

DCY

– Check the Oxy‐

gen Sensor 1 Af‐

ter Catalytic

Converter -

GX7- . Refer to

⇒ “3.6.27  Oxy‐

gen Sensor 1 Af‐

ter Catalytic

Converter GX7 ,

Checking”, page

513

 .

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

182

     Rep. Gr. ST - Generic Scan Tool

DTC /

Descrip‐

tion

Monitor

Strategy

Descrip‐

tion

Malfunction Crite‐

ria and Threshold

Value

Secondary Parame‐

ters with Enable

Conditions

Monitoring

Time

Length

MIL Il‐

lum.

Component Diag‐

nostic Procedure

• Target engine

speed < 150 RPM

• Dynamic MAF <

15.01 mg/rev

• Dynamic lambda

controller output

<= 20.0 %

• And
• Integrated MAF

after dynamic

conditions are ful‐

filled > 20.0 g

• Time after a cata‐

lyst purge phase

>= 1.0 s

• O2S rear voltage

@ diagnosis start

>= 0.55 V

• Integrated MAF

to start diagnosis

>= 5.0 g

• Integrated heat

energy >= 800.0

– 2,000.0 kJ

• Engine speed

1,248 – 3,008

RPM

• Coasting function

n.a

• O2S heater rear

active

• Lambda adapta‐

tion not active

• Valve lift n.a.
• And
• Depending on

lambda control:

• Intervention of

trim control be‐

havior activation

of catalyst diag‐

nosis < 0.10 [-]

• Or
• Intervention of

trim control dur‐

ing active catalyst

diagnosis < 0.20

[-]

• Depending on

canister purge:

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing    

183

DTC /

Descrip‐

tion

Monitor

Strategy

Descrip‐

tion

Malfunction Crite‐

ria and Threshold

Value

Secondary Parame‐

ters with Enable

Conditions

Monitoring

Time

Length

MIL Il‐

lum.

Component Diag‐

nostic Procedure

• Canister load <=

n.a. [-]

• Evap purge flow

n.a.

• Or
• Canister load cal‐

culation n.a.

• Evap purge flow

n.a.

• Or
• Evap purge valve

n.a.

• Depending on

canister purge

closing:

• Canister purge

(conditions) n.a.

• Canister purge

valve ( closing

time ) n.a.

• And
• Choice of:
• Evap purge valve

n.a. or evap

purge valve n.a.

and modeled

MAF-integral >

0.0 g

• Depending on

transmission

type:

• For MT
• Integrated MAF

per cylinder >=

0.00 kg

• For AT
• Integrated MAF

per cylinder >=

0.00 kg

• For DCT
• Integrated MAF

per cylinder >=

0.00 kg

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

184

     Rep. Gr. ST - Generic Scan Tool