Content .. 140 141 142 143 ..

Volkswagen Golf / Golf GTI / Golf Variant. Manual - part 142

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

• Time after a cata‐

lyst purge phase

>= 1.0 s

• O2S rear voltage

@ diagnosis start

>= 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

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing

241

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

• Coasting function

not active

• 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

242

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

• 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

P0140

O2 Sen‐

sor Cir‐

cuit No

Activity

Detec‐

ted Bank

1 Sen‐

sor 2

Oxygen

Sensors

Rear

Open Cir‐

cuit

• Internal resist‐

ance of O2S

(binary) >

25,000.0 Ohm

• 2.5 s
• Con‐

tinu‐

ous

• 2

DCY

– Check the Oxy‐

gen Sensor 1 Af‐

ter Catalytic

Converter -

GX7- . Refer to

P0141

O2 Sen‐

sor

Heater

Circuit

Bank 1

Sensor

Oxygen

Sensors

Heater

Rear Out

Of Range

High

• Internal resist‐

ance of O2S

(binary) 700.0 –

25,000.0 Ohm

• O2S heater com‐

manded on

• For time >= 10.0 s

• 20 s
• Once /

DCY

• 2

DCY

– Check the Oxy‐

gen Sensor 1 Af‐

ter Catalytic

Converter -

GX7- . Refer to

P0149

Fuel

Timing

Error

Injection

Valves

Supply

Voltage

Out Of

Range

Low

• Boost voltage <

30.0 V

• Engine running

>= 0.3 s

• 3.6 s
• Con‐

tinu‐

ous

• 2

DCY

– Check the En‐

gine Control

Module - J623- .

Refer to appro‐

priate repair

manual.

• Boost voltage

<= 50.0 V

Injection

Valves

Supply

Voltage

Out Of

Range

High

• Boost voltage >

75.0 V

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing

243

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

P0171

System

Too

Lean

Bank 1

Fuel Sys‐

tem, Sys‐

tem Too

Lean

• Lambda con‐

troller output >

35.0 %

• Lambda control

closed loop

• Mass air flow >

60.0 mg/rev

• Engine speed >

576 RPM

• ECT @ cylinder

head > 20° C

• IAT at intake

manifold > -48° C

• AAT > -48° C
• And
• Evap purge valve

closed

• Or
• Canister load <=

1.20 [-]

• Evap purge flow

at max. value

• Or
• Depending on

canister purge

min:

• Lower limit of

lambda controller

output n.a.

• Or
• Upper limit of

lambda controller

output n.a.

• And
• Evap purge flow

at min. value

• 60 s
• Con‐

tinu‐

ous

• 2

DCY

– Check the intake

and vacuum ho‐

ses for leaks,

Check the Posi‐

tive Crankcase

Ventilation, also

make sure the

oil dipstick is

properly se‐

cured.

– Listen to and vis‐

ually inspect the

Exhaust system

to insure there

are no leaks.

– Check the Oxy‐

gen Sensor 1

Before Catalytic

Converter -

GX10- . Refer to

– Check the Oxy‐

gen Sensor 1 Af‐

ter Catalytic

Converter -

GX7- . Refer to

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

244

Rep. Gr. ST - Generic Scan Tool

Content .. 140 141 142 143 ..