Get Exhaust emissions test Guide for Volkswagen Taigo SUV First Generation (2021-2025)

Polo 2018 ➤, Polo 2022 ➤, Taigo 2022 ➤

Maintenance - Edition 10.2021

5

Exhaust emissions test

This chapter provides information on the following subjects:

Exhaust emissions test for petrol engines ⇒ page 186

Exhaust emissions test for diesel engines ⇒ page 188

Note

♦ Please observe the country specific legal regulations.

♦ The exhaust emissions test described below has been cre‐

ated according to the legal regulations valid in Germany.

5.1

Exhaust emissions test for petrol 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.

•

For bar code reading the EET data sheet must be printed

out.

•

Automatic gearbox: selector lever in position “P” or “N”.

Manual gearbox: gear lever in neutral

Handbrake 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

186

5. Exhaust emissions test

Polo 2018 ➤, Polo 2022 ➤, Taigo 2022 ➤

Maintenance - Edition 10.2021

♦ 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 number “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)”

Specified data input for EET

There are different ways to enter the specified data:

♦ 1. By manual input

♦ 2. By bar code input from EET data sheet

♦ 3. Through ELSA web service

Note

♦ To use the ELSA web service, the exhaust gas testing sta‐

tion L which is used for the exhaust emissions test must be

integrated in the workshop network.

♦ The ELSA web service automatically transmits the data for

the specific vehicle via the network to the respective mask.

Manual specified data input for EET:

Note

All test conditions and data required for exhaust emissions test

can be found in the ⇒ Data sheets for exhaust emissions test

for respective engine.

– 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 - Test speed (idling speed)

2 - Warm-up phase for catalytic converter

3 - Engine temperature

4 - Increased idling speed

5 - CO content at increased idling speed

6 - Lambda at increased idling speed

7 - Idling speed

8 - Select regulating probe type; either “Step-type probe” or

“Broad-band probe”.

9 - Lambda probe value

Specified data input for EET as bar code:

– If specified data for EET are available as bar code, read bar

code of EET data sheet with bar code reader.

5. Exhaust emissions test

187

Polo 2018 ➤, Polo 2022 ➤, Taigo 2022 ➤

Maintenance - Edition 10.2021

All data required are shown on display.

Visual inspection

– Inspect all exhaust emissions relevant components.

– Check if exhaust system is fitted and complete and check for

leaks and damage.

Procedure

– 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

Handbrake 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)”

188

5. Exhaust emissions test

Polo 2018 ➤, Polo 2022 ➤, Taigo 2022 ➤

Maintenance - Edition 10.2021

♦ 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

is carried out in the infotainment system. ⇒ page 189

♦ 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.

– 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:

5. Exhaust emissions test

189

Polo 2018 ➤, Polo 2022 ➤, Taigo 2022 ➤

Maintenance - Edition 10.2021

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 190

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

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.

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.

Visual 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.

190

5. Exhaust emissions test

Exhaust emissions test for Your Volkswagen Taigo SUV First Generation (2021-2025)

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