Volkswagen Golf / Golf GTI / Golf Variant. Service manual - part 173

DTC /

Descrip‐

tion

Monitor

Strategy

Descrip‐

tion

Malfunction Crite‐

ria and Threshold

Value

Secondary Parame‐

ters with Enable

Conditions

Monitor‐

ing 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

• O2S rear volt‐

age > 0.25 V

• Intrusive lamb‐

da ramp lean >

1.12 [-]

• General condi‐

tions:

• Catalyst monitor

lambda modula‐

tion request ac‐

tive

• Intrusive lambda

ramp request ac‐

tive

• Vehicle speed >=

19 mph

• Barometric pres‐

sure >= 0.00 kPa

• 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

• IAT @ manifold >

-48° C

• Modeled catalyst

temperature @

start of diagnosis

> 510° C

• Modeled catalyst

temperature @

during diagnosis

470 – 830° C

• Diff. between dy‐

namic and sta‐

tionary catalyst

temperature -150

– 150° C

• Integrated air

mass, catalyst

temp. conditions

fulfilled >= 0.0 g

• Modeled EGT @

O2S rear <= 900°

C

• MAF per cylinder

22.50 – 150.00

kg/h

• Air mass , lower

range >= 0.00

mg/rev

• 0

(FTP75:

50) 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

3. Diagnosis and Testing    

365

DTC /

Descrip‐

tion

Monitor

Strategy

Descrip‐

tion

Malfunction Crite‐

ria and Threshold

Value

Secondary Parame‐

ters with Enable

Conditions

Monitor‐

ing Time

Length

MIL Il‐

lum.

Component Diag‐

nostic Procedure

• Air mass , upper

range <= 650.00

– 1,389.00 mg/

rev

• And
• Engine load n.a.

%

• Air mass setpoint

n.a. g/rev

• Accelerator pedal

value n.a. %

• For time n.a. s
• And
• Low dynamic

conditions

• Dynamic engine

speed < 50 rpm

• Dynamic air

mass < 50.00 mg/

rev

• Dynamic lambda

controller output

< 20.00 %

• And
• Integrated air

mass after dy‐

namic conditions

are fulfilled > 20.0

g

• Time after a cata‐

lyst purge phase

>= 1.0 s

• O2S rear voltage

>= 0.55 V

• Integrated air

mass >= 0.0 g

• Integrated heat

energy >= 550.00

– 700.00 kJ

• Engine speed

1,088 – 3,008

rpm

• Deviation of

lambda controller

output < 50.00 %

• Proportional part

of secondary fuel

control loop not

calibrated %

• Coasting function

not active

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

366

     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

Monitor‐

ing Time

Length

MIL Il‐

lum.

Component Diag‐

nostic Procedure

• O2S heater rear

active

• Lambda adapta‐

tion not active

• Valve lift not ac‐

tive

• And
• Depending on

Lambda control:

• Sum of integral

and proportional

part of secondary

fuel control loop

before diagnosis

< | 0.10 | [-]

• Or
• Sum of integral

and proportional

part of secondary

fuel control loop

during diagnosis

< | 0.25 | [-]

• Depending on

canister purge:

• 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.

• Or
• Evap purge valve

n.a.

• Or
• Evap purge n.a.
• Or
• Depending on

canister purge

closing:

• Canister purge

(conditions) n.a.

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing    

367

DTC /

Descrip‐

tion

Monitor

Strategy

Descrip‐

tion

Malfunction Crite‐

ria and Threshold

Value

Secondary Parame‐

ters with Enable

Conditions

Monitor‐

ing Time

Length

MIL Il‐

lum.

Component Diag‐

nostic Procedure

• Canister purge

valve ( closing

time ) n.a. [s]

• And
• Choice of:
• Evap purge valve

n.a.

• Or
• Evap purge valve

n.a.

• And
• Modeled air mass

integral > 50.0 g

• Integrated air

mass per cylinder

>= 1.40 – 1.80 kg

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

368

     Rep. Gr. ST - Generic Scan Tool