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
.
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
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
.
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
– Check the Fuel
Pressure Regu‐
lator Valve -
N276- . Refer to
– Check the Fuel
Pump Control
Module - J538- /
Fuel Delivery
Unit - GX1- . Re‐
fer to
GTI 2014 ➤
Generic Scan Tool - Edition 04.2015
212
Rep. Gr. ST - Generic Scan Tool
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