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Table of Contents > Exhaust emissions test for diesel engines

VW Passat B8 Service Manual ➜ Exhaust emissions test for diesel engines

Passat 2015 ➤, Passat 2019 ➤, Passat Variant 2015 ➤, Passat Variant 2019 ➤  
Maintenance - Edition 11.2020  
– If specified data for EET are available as bar code, read bar  
code of EET data sheet with bar code reader.  
All data required are shown on display.  
Inspection  
– Inspect all exhaust emissions relevant components.  
– Check if exhaust system is fitted and complete and check for  
leaks and damage.  
Procedure  
– Start the engine.  
If hybrid vehicle starts in »E-Mode«, combustion engine must  
be activated for EET.  
Version 1  
– On hybrid vehicles, open bonnet to make sure that only the  
combustion engine is activated.  
Version 2  
– Close bonnet.  
– Take up driving position.  
– Wear seat belt.  
– Selector lever in position “P”.  
– Operate brake pedal.  
– Press accelerator pedal to »kickdown« position.  
Combustion engine is now active.  
– Open bonnet again.  
– Follow instructions from exhaust gas testing station.  
5.2  
Exhaust emissions test for diesel en‐  
gines  
Special tools and workshop equipment required  
♦ Exhaust gas testing station L -VAS 7320 A-  
Note  
The following description refers to vehicles fitted with “On‐  
board diagnosis” OBD.  
The OBD monitors all components and part systems influ‐  
encing the exhaust emissions quality.  
It is possible to carry out an exhaust emissions test only  
when all units of the emissions testing station are connected  
properly and joined to each other according to the operating  
instructions.  
All work to be performed is displayed by the emissions test‐  
ing station.  
Conditions for testing  
All test conditions and data required for exhaust emissions  
test are found on EET data sheet for the respective engine.  
Automatic gearbox: selector lever in “P” position  
Manual gearbox: gear lever in neutral  
210  
5. Exhaust emissions test  
Passat 2015 ➤, Passat 2019 ➤, Passat Variant 2015 ➤, Passat Variant 2019 ➤  
Maintenance - Edition 11.2020  
Parking brake applied  
12V battery fully charged (if battery charge is too low, raise  
idling speed if necessary).  
– Perform exhaust emissions test according to instructions on  
display.  
Vehicle data input  
– Enter the following data:  
♦ Registration number  
♦ Key numbers  
♦ Vehicle identification number  
♦ Fuel type  
♦ Mileage  
The following vehicle data can be found in the vehicle registra‐  
tion certificate part 1:  
♦ Registration number: “e.g. WOB-HH 1234”  
♦ Emission key No. “field 14.1 (code for field 14)”  
♦ Vehicle manufacturer: “Field 2”, “Field 2.1 (code for field 2)”  
♦ Vehicle identification number “field E”  
♦ Type and version “Field D2 (type only)”, “Field 2.2 (code for  
field D.2)”  
♦ Nominal speed “field P4”  
Specified data input for EET  
There are different ways to enter the specified data:  
♦ 1. By manual input  
♦ 2. By automatic data acceptance from the exhaust-emission  
station database  
Note  
Regarding Euro 6 vehicles with manual gearbox and info‐  
tainment system, the deactivation of the idle speed limitation  
Euro 6 vehicles with automatic gearbox, manufactured from  
week no. 48/18 do not have idle speed limitation any more.  
If there is no ESP or soft key in the infotainment system  
to deactivate the speed limitation, the governed speed can  
be measured using the engine speed limited by the control  
unit. To do this, all the EET specifications must be entered  
manually.  
-1  
For all Euro 6 vehicles an opacity figure of max. 0.25 m  
applies.  
Deactivation of idle speed limitation of Euro 6 vehicles with  
manual gearbox:  
– Switch on ignition.  
– Switch on Infotainment system.  
– Press Home function button.  
– Press Vehicle function button.  
5. Exhaust emissions test  
211  
 
Passat 2015 ➤, Passat 2019 ➤, Passat Variant 2015 ➤, Passat Variant 2019 ➤  
Maintenance - Edition 11.2020  
– Press Setup function button.  
– Press ESC system function button and deactivate TCS.  
Manual specified data input for EET:  
Note  
For the relevant test requirements and all the necessary da‐  
ta for the exhaust emissions test, refer to the ⇒ Data sheets  
for exhaust emissions test of the respective engine.  
The nominal speed is located in field P4 of the registration  
certificate part 1 or field 7 of the vehicle document and must  
always be entered manually.  
If the idle speed limitation cannot be deactivated, enter the  
value 2500 ± 200 rpm in the box for rev limit and 2500 in the  
box for engine speed for conditioning.  
– Perform manual data input according to instructions on dis‐  
play.  
– Enter displayed values on EET data sheet in column “Test  
values for exhaust emissions test” on display as follows:  
1 - Speed for conditioning  
2 - Number of throttle bursts for conditioning  
3 - Engine oil temperature (min. value)  
4 - Select engine oil temperature measurement procedure  
5 - Idling speed  
6 - Governed speed  
7 - Nominal speed (registration certification part 1, vehicle  
document)  
8 - Governed speed measuring period (1 second)  
9 - Type plate value ⇒ page 212  
10 - Select probe type (No. of probe)  
11 - Select measuring mode  
12 - Measured period portion  
Note  
When performing the exhaust emissions test for Euro 5 ve‐  
hicles, the respective engineer must always use the vehicle-  
specific exhaust emissions limit value indicated on the type  
plate.  
If no value is indicated on the type plate, the opacity figure  
specified by the manufacturer and indicated in ELSA must  
be used.  
If no value is indicated on the type plate and no opacity  
figure has been specified by the manufacturer, the statutory  
-1  
-1  
opacity figures (2.5 m or 1.5 m , depending on date of  
initial registration) must be used.  
The nominal speed can only be entered manually.  
212  
5. Exhaust emissions test  
 
Passat 2015 ➤, Passat 2019 ➤, Passat Variant 2015 ➤, Passat Variant 2019 ➤  
Maintenance - Edition 11.2020  
If the opacity figure of Euro 5 vehicles on the EET data sheet  
is different from the value indicated on the type plate, enter the  
type plate value manually.  
Inspection  
– Inspect all exhaust emissions relevant components.  
– Check if exhaust system is complete and check for leaks  
and damage.  
Procedure  
– Follow instructions from exhaust gas testing station.  
Evaluation  
Note  
If the exhaust emissions test was performed at idle speed  
limitation, the log note “governed speed <90% of the nominal  
speed (idle speed limitation)” is entered in the log.  
5. Exhaust emissions test  
213  

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