Content .. 177 178 179 180 ..

Volkswagen Golf / Golf GTI / Golf Variant. Manual - part 179

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

P2440

AIR Sys‐

tem

Switch‐

ing

Valve

Stuck

Open

Bank 1

Secon‐

dary Air

Valve

Function‐

al Check

• Ratio relative

pressure

phase 1 and

relative pres‐

sure phase 2 >

1.34 [-]

• General:
• Secondary air

pump active

• Catalyst heating

active

• Secondary air in‐

jection active

• MAF <= 140.0 kg/

• ECT @ cylinder

head >= -10; <

115° C

• IAT @ manifold

>= -10; < 100° C

• Modeled catalyst

temperature <

900° C

• Relative baro‐

metric pressure >

0.73 [-]

• And
• Diff. barometric

pressure vs.

manifold pres‐

sure > n.a. kPa

• Or
• Engine n.a.

• 0.1 s
• Once /

DCY

• 2

DCY

– Check the Sec‐

ondary Air Sys‐

tem - GX24- .

Refer to

P2556

Engine

Coolant

Level

Sensor/

Switch

Circuit

Rotary

Coolant

Valve

Commu‐

nication

Check

• Communica‐

tion signal fail‐

ure

• 0.5 s
• Con‐

tinu‐

ous

• 2

DCY

– Check the En‐

gine Tempera‐

ture Control Ac‐

tuator - N493- .

Refer to

Rotary

Coolant

Valve

Signal

Check

• Sensor signal

failure

P2557

Engine

Coolant

Level

Sensor/

Switch

Circuit

Range/

Per‐

for‐

mance

Rotary

Coolant

Valve

Check‐

sum Veri‐

fication

• Checksum sig‐

nal failure

• 0.5 s
• Con‐

tinu‐

ous

• 2

DCY

– Check the En‐

gine Tempera‐

ture Control Ac‐

tuator - N493- .

Refer to

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing

389

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

P2564

Turbo‐

charger

Boost

Control

Position

Sensor

"A" Cir‐

cuit Low

Turbo‐

charger

Boost

Control

Position

Sensor

Short To

Ground /

Open Cir‐

cuit

• Turbocharger

boost control

position sensor

voltage < 0.20

• 0.5 s
• Con‐

tinu‐

ous

• 2

DCY

– Check the

Charge Pres‐

sure Actuator -

V465- / Charge

Pressure Actua‐

tor Position Sen‐

sor - G581- . Re‐

fer to

P2565

Turbo‐

charger

Boost

Control

Position

Sensor

"A" Cir‐

cuit High

Turbo‐

charger

Boost

Control

Position

Sensor

Short To

Battery

Voltage

• Turbocharger

boost control

position sensor

voltage > 4.80

• 0.5 s
• Con‐

tinu‐

ous

• 2

DCY

– Check the

Charge Pres‐

sure Actuator -

V465- / Charge

Pressure Actua‐

tor Position Sen‐

sor - G581- . Re‐

fer to

P2610

ECM/

PCM

Engine

Off Tim‐

er Per‐

for‐

mance

Engine

Off Time

ECM In‐

ternal

Timer

Check

• ECM internal

timer failure

• Or
• ECM internal

timer signal not

calibrated

• ECM internal

timer not cali‐

brated

• Time after last

engine stop not

calibrated

• SPI initialization

finished

• 1.3 s
• Con‐

tinu‐

ous

• 2

DCY

– Check the En‐

gine Control

Module - J623- .

Refer to appro‐

priate repair

manual.

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

390

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

Engine

Off Time

ECM Ra‐

tionality

Check

• Difference be‐

tween engine-

off-time and

ECM keep

alive-time >=

12.0 s

• Or
• Difference be‐

tween ECM

keep alive-time

and engine-off-

time >= 12.0 s

• Monitor Entry

Conditions:

• ECM keep alive-

time active

• ECU internal tim‐

er reset not acti‐

vated

• Time delay >= 1.0

• Time after last

engine stop < 48

[h]

• Case 1:
• For time (after en‐

try conditions ful‐

filled) >= 65 s

• Case 2:
• For time (after en‐

try conditions ful‐

filled) < 65 s

• Ignition key tran‐

sition off to on

• 10 ms
• Once /

DCY

• Difference be‐

tween engine-

off-time and

ECM keep

alive-time >=

12.0 s

• Time after engine

stop < 86,400.0 s

• Engine off time

plausible

• Engine off time

monitoring not

finished

• Engine off time

signal valid time

after reset < 2.0 s

• And
• Case 1:
• Engine off timer

n.a.

• Or
• Engine off time

n.a.

• Case 2:
• ECM internal tim‐

er active

• SPI communica‐

tion failure after

reset detected

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing

391

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

P2635

Fuel

Pump

Control

Module

Per‐

for‐

mance

COM:

Fuel

Pump

Control

Module

(FPCM)

commu‐

nication

with

FPCM

• FP signal:

overcurrent

failure feed‐

back >= 2.00 [-]

• Engine on

• 1.6 s
• Con‐

tinu‐

ous

• 2

DCY

– Check the Fuel

Pump Control

Module - J538- .

Refer to

• FP signal: rota‐

ry failure feed‐

back >= 2.00 [-]

• 1.8 s
• Con‐

tinu‐

ous

• FP sensor:

short to battery

failure or rpm

deviation feed‐

back >= 2.00 [-]

• 2.4 s
• Con‐

tinu‐

ous

P2681

Engine

Coolant

Bypass

Valve

"A" Con‐

trol Cir‐

cuit/

Open

Rotary

Coolant

Valve

Open Cir‐

cuit

• Load resist‐

ance > 200.0

kOhm

• Rotary slide valve

commanded off

• 1.3 s
• Con‐

tinu‐

ous

• 2

DCY

– Check the En‐

gine Tempera‐

ture Control Ac‐

tuator - N493- .

Refer to

P2682

Engine

Coolant

Bypass

Valve

"A" Con‐

trol Cir‐

cuit Low

Rotary

Coolant

Valve

Short To

Ground

Output 1

• High side cur‐

rent output 1

driver stage in‐

ternal value

• Rotary slide valve

commanded on

• Rotary valve di‐

rection forward

• 0.30 s
• Con‐

tinu‐

ous

• 2

DCY

– Check the En‐

gine Tempera‐

ture Control Ac‐

tuator - N493- .

Refer to

Rotary

Coolant

Valve

Short To

Ground

Output 2

• High side cur‐

rent output 2

driver stage in‐

ternal value

• Rotary slide valve

commanded on

• Rotary valve di‐

rection reversed

P2683

Engine

Coolant

Bypass

Valve

"A" Con‐

trol Cir‐

cuit High

Rotary

Coolant

Valve

Short To

Battery

Plus Out‐

put 1

• Low side cur‐

rent output 1

driver stage in‐

ternal value

• Rotary slide valve

commanded off

• 0.30 s
• Con‐

tinu‐

ous

• 2

DCY

– Check the En‐

gine Tempera‐

ture Control Ac‐

tuator - N493- .

Refer to

Rotary

Coolant

Valve

Short To

Battery

Plus Out‐

put 2

• Low side cur‐

rent output 2

driver stage in‐

ternal value

• Rotary slide valve

commanded off

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

392

Rep. Gr. ST - Generic Scan Tool

Content .. 177 178 179 180 ..