Content .. 99 100 101 102 ..

Volkswagen Golf / Golf GTI / Golf Variant. Service manual - part 101

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

• Low dynamic

conditions devia‐

tion actual

• And
• 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 ac‐

tive

• Lambda adapta‐

tion not active

• Valve lift n.a.
• And depending

on lambda con‐

trol

• Intervention of

trim control be‐

havior activation

of catalyst diag‐

nosis < 0.10 [-]

• Or

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing

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

• Intervention of

trim control dur‐

ing active catalyst

diagnosis < 0.20

[-]

• 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

• 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 >=

0.0 kg

• For AT
• Integrated MAF

per cylinder >=

0.0 kg

• For DCT
• Integrated MAF

per cylinder >=

0.0 kg

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

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

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
• Contin‐

uous

• 1

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

• Stir up O2S heat‐

er front (linear)

finished

• 20.0 s
• Once /

DCY

• 1

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
• Contin‐

uous

• 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

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

P0171

System

Too

Lean

Bank 1

Fuel Sys‐

tem, Sys‐

tem Too

Lean

• Lambda con‐

troller output >

35.0 %

• Lambda control

closed loop

• Barometric pres‐

sure > 73.0 kPa

• 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

• 60.0 s
• Contin‐

uous

• 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

Rep. Gr. ST - Generic Scan Tool

Content .. 99 100 101 102 ..