Content .. 155 156 157 158 ..

Volkswagen Golf / Golf GTI / Golf Variant. Manual - part 157

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

P050A

Cold

Start

Idle

Control

System

Per‐

for‐

mance

Cold Idle

Controller

Function

Monitor‐

ing: en‐

gine

speed

deviation

• Positive engine

speed vs. en‐

gine speed set

point > 90 RPM

• Integrated I-

part of idle

speed control‐

ler n.a.

• General condi‐

tions:

• Vehicle speed =0

mph

• Accelerator pedal

released by driv‐

• Throttle actuator

commanded on

• Evap purge flow <

4.00 kg/h

• Engine running
• Time after engine

start > 0.0 s

• Clutch switch n.a.
• Barometric pres‐

sure > 70.00 kPa

• Catalyst heating

active

• ECT @ cylinder

head > -10° C

• And
• Setpoint change

n.a. rpm

• For time n.a. s
• And
• Additional after

dynamic condi‐

tions fulfilled:

• Gear switch not

active

• (A/T only)
• Accelerator pedal

released by driv‐

• Vehicle speed 0

mph

• For time >= 0.0 s

• 12 s
• Con‐

tinu‐

ous

• 2

DCY

– Check the Throt‐

tle Valve Control

Module - GX3- .

Refer to

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing

301

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

Cold Idle

Controller

Function

Monitor‐

ing: en‐

gine

speed

deviation

• Negative en‐

gine speed de‐

viation from set

point > 100

RPM

• Integrated I-

part of idle

speed control‐

ler n.a.

• General condi‐

tions:

• Vehicle speed =0

mph

• Accelerator pedal

released by driv‐

• Throttle actuator

commanded on

• Evap purge flow <

4.00 kg/h

• Engine running
• Time after engine

start > 0.0 s

• Clutch switch n.a.
• Barometric pres‐

sure > 70.00 kPa

• Catalyst heating

active

• ECT @ cylinder

head > -10° C

• And
• Setpoint change

n.a. rpm

• For time n.a. s
• And
• Additional after

dynamic condi‐

tions fulfilled:

• Gear switch not

active

• (A/T only)
• Accelerator pedal

released by driv‐

• Vehicle speed 0

mph

• Engine load <

31.25 %

• (M/T only)
• For time >= 0.0 s

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

302

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

P050B

Cold

Start Ig‐

nition

Timing

Per‐

for‐

mance

Ignition

Control

Ignition

Timing

Monitor

• Ratio between

ignition angle

efficiency inte‐

gral and time at

idle speed >

0.20 [-]

• Engine idle

speed time @ idle

speed > 5.0 s

• Ignition angle set‐

point <= 0.85 [-]

• Modeled pres‐

sure quotient <=

1.0 [-]

• Vehicle speed = 0

mph

• And
• Diff. air mass set

point vs. filtered

air mass set point

for load dynamic

detection <

99,999.00 mg/rev

• For time >= 0.0 s
• And
• Diff. engine

speed vs. filtered

engine speed for

engine speed dy‐

namic detection <

8,160 RPM

• For time >= 0.0 s

• 0.1 s
• Once /

DCY

• 2

DCY

– Check for any

Engine Speed

sensor or Igni‐

tion Coil faults

and diagnose

them first.

– Check the En‐

gine Speed Sen‐

sor - G28- . Re‐

fer to

– Check the Igni‐

tion Coils with

Power Output

Stage . Refer to

– If NO other co‐

des are set,

check the ECM.

Refer to appro‐

priate repair

manual.

– Check the En‐

gine Control

Module - J623- .

Refer to appro‐

priate repair

manual.

P052A

Cold

Start "A"

Cam‐

shaft

Position

Timing

Over-

Ad‐

vanced

Bank 1

Cold

Start

Monitor‐

ing Varia‐

ble Valve

Timing

(VVT) In‐

take Ac‐

tuator ra‐

tionality

check

• Camshaft posi‐

tion deviation >

9.00° CRK

• Modeled oil tem‐

perature -40 –

160° C

• Engine speed

608 – 6,016 rpm

• Camshaft posi‐

tion n.a.

• Camshaft posi‐

tion adjustment

active

• Catalyst heating

active

• Camshaft posi‐

tion deviation in‐

tegrator ( actual

vs. setpoint posi‐

tion) >= 8.00°

CRK’s

• 0

(FTP75:

45) [s]

• once /

DCY

• 2

DCY

– Check the Cam‐

shaft Adjust‐

ment Valve 1 -

N205- . Refer to

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing

303

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

P053F

Cold

Start

Fuel

Pres‐

sure

Per‐

for‐

mance

Bank 2

Fuel Sys‐

tem Out

Of Range

High

• Deviation be‐

tween refer‐

ence and ac‐

tual fuel pres‐

sure <

-2,999.90 kPa

• For time >= 3.0

• General:
• Engine speed >

512 rpm

• Time after engine

start > 10.0 s

• And
• Fuel mass set‐

point lower range

> 5.00 mg/rev

• for time >= 10.0 s
• Fuel mass set‐

point upper range

<= 187.17 –

229.23 mg/rev

• Fuel mass set‐

point gradient

-1389.00 –

1389.00 mg/rev

• For time >= 5.0 s
• And
• Additional for cat‐

alyst heating:

• Catalyst heating

active

• ECT @ cylinder

head > -48° C

• Fuel mass set‐

point lower range

>= 5.00 mg/rev

• For time >= 5.1 s

• 4.5 s
• Once /

DCY

• 2

DCY

– Check the fuel

pressure. Refer

to appropriate

repair manual.

– Check the Fuel

Pump Control

Module - J538- /

Fuel Delivery

Unit - GX1- . Re‐

fer to

– Check the Fuel

Pressure Regu‐

lator Valve -

N276- . Refer to

– Check the Fuel

Pressure Sen‐

sor - G247- . Re‐

fer to

Fuel Sys‐

tem Out

Of Range

Low

• Deviation be‐

tween refer‐

ence and ac‐

tual fuel pres‐

sure > 2,999.90

kPa

• For time >= 3.0

P054A

Cold

Start "B"

Cam‐

shaft

Position

Timing

Over-

Ad‐

vanced

Bank 1

Cold

Start

Monitor‐

ing Varia‐

ble Valve

Timing

(VVT) Ex‐

haust Ac‐

tuator ra‐

tionality

check

• Camshaft posi‐

tion deviation >

9.00° CRK

• Modeled oil tem‐

perature

-40...160° C

• Engine speed

608 – 6,016 rpm

• Camshaft posi‐

tion n.a.

• Camshaft posi‐

tion adjustment

active

• Catalyst heating

active

• Camshaft posi‐

tion deviation in‐

tegrator ( actual

vs. setpoint posi‐

tion) >= 8.00°

CRK’s

• 0

(FTP75:

45) s

• Once /

DCY

• 2

DCY

– Check the Ex‐

haust Camshaft

Adjustment

Valve 1 - N318- .

Refer to

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

304

Rep. Gr. ST - Generic Scan Tool

Content .. 155 156 157 158 ..