Volkswagen Golf / Golf GTI / Golf Variant. Manual - part 134

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

• And
• Choice of:
• BARO > 73.00; <

107.50 kPa

• Or
• Barometric pres‐

sure sensor not

active

P0070

Ambient

Air Tem‐

perature

Sensor

Circuit

"A"

CAN:

Ambient

Air Tem‐

perature

Sensor

Short To

Battery

Voltage

Or Open

Circuit

• AAT sensor

voltage (hard‐

ware values) >

4.50 V

 

• 2.0 s
• Con‐

tinu‐

ous

• 2

DCY

– Check the Out‐

side Air Temper‐

ature Sensor -

G17- . Refer to

⇒ “3.6.26  Out‐

side Air Temper‐

ature Sensor

G17 , Check‐

ing”, page 511

 .

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing    

209

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

P0071

Ambient

Air Tem‐

perature

Sensor

Circuit

"A"

Range/

Per‐

for‐

mance

Ambient

Air Tem‐

perature

Sensor

Cross

Check

• High side:
• Diff. AAT @

cold start vs.

IAT @ manifold

@ cold start >

25 K

• Diff. AAT @

cold start vs.

ECT @ radiator

outlet @ cold

start > 25 K

• min. amount of

faulty refer‐

ence measure‐

ments to detect

defective sen‐

sor 2.00 [-]

• Or
• Low side:
• Diff. IAT @

manifold @

cold start vs.

AAT @ cold

start > 25.0 K

• Diff. ECT @ ra‐

diator outlet @

cold start vs.

AAT @ cold

start > 25.0 K

• min. amount of

faulty refer‐

ence measure‐

ments to detect

defective sen‐

sor 2.00 [-]

• Engine off time

>= 360.0 min

• Engine off time

plausible

• Time after engine

start < 1,400.0 s

• Depending on

temperature

slope:

• Diff. actual vs

previous IAT <

256.0 K

• Diff. actual vs

previous ECT @

cylinder head n.a.

K

• Diff.. actual vs

previous ECT@

radiator outlet <

256.0 K

• Diff. actual vs

previous AAT <

256.0 K

• For time >= 1.0 s
• Depending on

meanvalue con‐

dition

• Mean value of all

temperature sen‐

sors @ cold start

>= -256 ° C

• Number of valid

sensors >= 2.00

[-]

• Depending on

block heater / so‐

lar radiation de‐

tection

• Time after engine

start >= 0.5 s

• Vehicle speed >=

22 mph

• For time >= 20.0 s
• Diff. actual IAT @

manifold vs. min.

IAT @ manifold <

5.0 K

• Diff. actual ECT

@ cylinder head

vs. min. ECT @

cylinder head n.a.

K

• 0.1 s
• Once /

DCY

• 2

DCY

– Check the Out‐

side Air Temper‐

ature Sensor -

G17- . Refer to

⇒ “3.6.26  Out‐

side Air Temper‐

ature Sensor

G17 , Check‐

ing”, page 511

 .

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

210

     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

• Diff. actual AAT

vs. min. AAT <

4.0 K

• Diff. actual ECT

@ radiator outlet

vs. min. ECT @

radiator outlet <

1.1 K

P0072

Ambient

Air Tem‐

perature

Sensor

Circuit

"A" Low

CAN:

Ambient

Air Tem‐

perature

Sensor

Short To

Ground

• AAT sensor

voltage < 0.10

V

 

• 2.0 s
• Con‐

tinu‐

ous

• 2

DCY

– Check the Out‐

side Air Temper‐

ature Sensor -

G17- . Refer to

⇒ “3.6.26  Out‐

side Air Temper‐

ature Sensor

G17 , Check‐

ing”, page 511

 .

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing    

211

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

P0087

Fuel

Rail/

System

Pres‐

sure -

Too Low

Bank 1

Fuel Sys‐

tem Pres‐

sure Sen‐

sor, High

Pressure

Side Out

Of Range

Low

• Deviation

lambda of con‐

troller included

adaption -50.0

– 50.0 %

• and
• High pressure

controller out‐

put > 45 mg

• And
• Deviation be‐

tween fuel

pressure set

point and cur‐

rent fuel pres‐

sure > 2,999.80

kPa

• Fuel pressure >

3,500.31 kPa

General:

• Engine speed

608 – 6,816 [rpm]

• Fuel mass set‐

point 5.00 –

1,389.00 mg/rev

• Time after engine

start > 10.0 s

• Engine warm-up

not calibrated

• Catalyst heating

not calibrated

• Full load not cali‐

brated

• Catalyst purge

not calibrated

• Lambda control

not calibrated

• Evap purge func‐

tionality diagno‐

sis not calibrated

• Fuel pressure

setpoint gradient

<= 34,777.60 kPa

• And
• Depending on

low dynamic con‐

ditions:

• 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
• Depending on

canister purge:

• Canister load not

calibrated [-]

• Or
• Evap purge valve

not calibrated

• 5.0 s
• Con‐

tinu‐

ous

• 2

DCY

– Check the fuel

pressure, refer

to the repair

manual for prop‐

er procedures.

– Check the Fuel

Pressure Sen‐

sor - G247- . Re‐

fer to

⇒ “3.6.17  Fuel

Pressure Sen‐

sor G247 ,

Checking”, page

491

 .

– Check the Fuel

Pressure Regu‐

lator Valve -

N276- . Refer to

⇒ “3.6.16  Fuel

Pressure Regu‐

lator Valve

N276 , Check‐

ing”, page 489

 .

– Check the Fuel

Pump Control

Module - J538- /

Fuel Delivery

Unit - GX1- . Re‐

fer to

⇒ “3.6.18  Fuel

Pump Control

Module J538 /

Fuel Delivery

Unit GX1 ,

Checking”, page

493

 .

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

212

     Rep. Gr. ST - Generic Scan Tool