Volkswagen Golf / Golf GTI / Golf Variant. Service manual - part 185

 

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Volkswagen Golf / Golf GTI / Golf Variant. Service manual - part 185

 

 

DQ-250 6F 02E

DTC Fault Code

Description

Monitor Strat‐

egy Descrip‐

tion

Malfunction

Criteria

Threshold

Value

Secondary Pa‐

rameters with

Enable Condi‐

tions

Monitor‐

ing Time

Length

Fre‐

quency

of

checks,

MIL Il‐

lum

P0777 Pressure

Control Sol‐

enoid "B"

Stuck On

• pressure

buildup

monitoring

• the num‐

ber of suc‐

cessive

pressure

buildup

failure of

clutch 2

reaches a

maximum

value

• counter > 2 • engaged

gear on input

shaft 2

• desired pres‐

sure > adap‐

ted clutch

slipping point

– 0.2 bar

• output speed

< 200 rpm

• terminal 15

voltage > 4 V

for more than

500 ms

• battery volt‐

age > 9 V for

more than

500 ms

• engine

speed > 600

rpm for more

than 500 ms

• 0 ms • 2

driv‐

ing

cy‐

cles

• short-circuit

current

check

• compari‐

son of ac‐

tual valve

current

with de‐

sired valve

current of

clutch 2

• actual cur‐

rent >de‐

sired cur‐

rent and

(actual

current-

desired

current) >

200 mA for

more than

200 ms

• common

high-side

switch 2 on,

not defect

and voltage

> 9.2 V

• gearbox sub‐

system 2 ac‐

tive

• common

high-side

switches not

deactivated

by module 2

• terminal 15

voltage > 9 V

for more than

500 ms

• engine

speed > 500

rpm

• 200

ms

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing    

413

DQ-250 6F 02E

DTC Fault Code

Description

Monitor Strat‐

egy Descrip‐

tion

Malfunction

Criteria

Threshold

Value

Secondary Pa‐

rameters with

Enable Condi‐

tions

Monitor‐

ing Time

Length

Fre‐

quency

of

checks,

MIL Il‐

lum

P0781 1-2 Shift

• unable to

disengage

the first

gear

• gearshift

fork of first

gear stays

in shifted

position in

spite of

control to

disengage

• gearshift

fork posi‐

tion > syn‐

chronizing

point first

gear +

10% syn‐

chronizing

point

measured

by a basic

adjust‐

ment (first

gear stays

in shifted

position)

control

gearshift

fork valve

2 >= 5%

• control safe‐

ty valve 1

(ON) >= 20%

• multiplexer

position = 0

• desired main

pressure > 2

bar

• no main

pressure

loss

• terminal 15

voltage > 4 V

for more than

500 ms

• battery volt‐

age > 9 V for

more than

500 ms

• engine

speed > 600

rpm for more

than 500 ms

• 6000

ms

• 2

driv‐

ing

cy‐

cles

P0782 2-3 Shift

• unable to

disengage

the second

gear

• gearshift

fork of sec‐

ond gear

stays in

shifted po‐

sition in

spite of

control to

disengage

• gearshift

fork posi‐

tion < syn‐

chronizing

point sec‐

ond gear -

10% syn‐

chronizing

point

measured

by a basic

adjust‐

ment (sec‐

ond gear

stays in

shifted po‐

sition) con‐

trol gear‐

shift fork

valve 4 >=

5%

• control safe‐

ty valve 1

(ON) >= 20%

• multiplexer

position = 1

• desired main

pressure > 2

bar

• no main

pressure

loss

• terminal 15

voltage > 4 V

for more than

500 ms

• battery volt‐

age > 9 V for

more than

500 ms

• engine

speed > 600

rpm for more

than 500 ms

• 6000

ms

• 2

driv‐

ing

cy‐

cles

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

414

     Rep. Gr. ST - Generic Scan Tool

DQ-250 6F 02E

DTC Fault Code

Description

Monitor Strat‐

egy Descrip‐

tion

Malfunction

Criteria

Threshold

Value

Secondary Pa‐

rameters with

Enable Condi‐

tions

Monitor‐

ing Time

Length

Fre‐

quency

of

checks,

MIL Il‐

lum

P0783 3-4 Shift

• unable to

disengage

the third

gear

• gearshift

fork of third

gear stays

in shifted

position in

spite of

control to

disengage

• gearshift

fork posi‐

tion < syn‐

chronizing

point third

gear - 10%

synchro‐

nizing

point

measured

by a basic

adjust‐

ment (third

gear stays

in shifted

position)

control

gearshift

fork valve

1 >= 5%

• control safe‐

ty valve 1

(ON) >= 20%

• multiplexer

position = 0

• desired main

pressure > 2

bar

• no main

pressure

loss

• terminal 15

voltage > 4 V

for more than

500 ms

• battery volt‐

age > 9 V for

more than

500 ms

• engine

speed > 600

rpm for more

than 500 ms

• 6000

ms

• 2

driv‐

ing

cy‐

cles

P0784 4-5 Shift

• unable to

disengage

the fourth

gear

• gearshift

fork of

fourth gear

stays in

shifted po‐

sition in

spite of

control to

disengage

• gearshift

fork posi‐

tion > syn‐

chronizing

point

fourth gear

+ 10% syn‐

chronizing

point

measured

by a basic

adjust‐

ment

(fourth

gear stays

in shifted

position)

control

gearshift

fork valve

3 >= 5%

• control safe‐

ty valve 2

(ON) >= 20%

• multiplexer

position = 1

• desired main

pressure > 2

bar

• no main

pressure

loss

• terminal 15

voltage > 4 V

for more than

500 ms

• battery volt‐

age > 9 V for

more than

500 ms

• engine

speed > 600

rpm for more

than 500 ms

• 6000

ms

• 2

driv‐

ing

cy‐

cles

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing    

415

DQ-250 6F 02E

DTC Fault Code

Description

Monitor Strat‐

egy Descrip‐

tion

Malfunction

Criteria

Threshold

Value

Secondary Pa‐

rameters with

Enable Condi‐

tions

Monitor‐

ing Time

Length

Fre‐

quency

of

checks,

MIL Il‐

lum

P0791 Intermedi‐

ate Shaft

Speed Sen‐

sor "A" Cir‐

cuit

• signal

range

check

• rotational

speed of

input shaft

1 exceed a

maximum

value

OR

• rotational

speed of

input shaft

2 exceed a

maximum

value

• rotational

speed >

12000 rpm

• terminal 15

voltage > 4 V

for more than

500 ms

• 100

ms

• 2

driv‐

ing

cy‐

cles

P0797 Pressure

Control Sol‐

enoid "C"

Stuck On

• short-circuit

current

check

• compari‐

son of ac‐

tual valve

current

with de‐

sired valve

current of

main pres‐

sure sole‐

noid valve

• actual

current>de‐

sired cur‐

rent and

(actual cur‐

rent- de‐

sired cur‐

rent) > 200

mA for

more than

300 ms

• common

high-side

switch 3 on

and not de‐

fect

• common

high-side

switch 1 and

2 voltage >

9.2 V

• common

high-side

switches not

deactivated

by module 2

• terminal 15

voltage > 9 V

for more than

500 ms

• engine

speed > 500

rpm

• 300

ms

• 2

driv‐

ing

cy‐

cles

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

416

     Rep. Gr. ST - Generic Scan Tool

 

 

 

 

 

 

 

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