Seat Leon >> Exhaust emissions test, diesel engines, with emissions testing station L - VAS 7320 A

SEAT Leon Service and Repair Manual / Maintenance / Description of work / Exhaust emissions test / Exhaust emissions test, diesel engines, with emissions testing station L - VAS 7320 A

Special tools and workshop equipment required

  • Emissions testing station L - VAS 7320 A-

NOTICE The following description refers to vehicles fitted with "Onboard diagnosis" OBD.

The OBD monitors all components and part systems influencing the exhaust emissions quality.

It is only possible to carry out an exhaust emissions test when all units of the emissions testing station are connected properly and combined with each other according to the operating instructions.

All work to be performed is displayed by the emissions testing station .

Test conditions

  • All test conditions and data required for exhaust emissions test are found on EET data sheet for the respective engine.
  • For bar code reading of specified data for EET, the EET data sheet must be printed out.
  • Automatic gearbox: Selector lever in position "P" or "N".
  • Manual gearbox: Gear lever in neutral
  • Parking brake pressed.
  • Perform exhaust emissions test according to instructions on display.

Vehicle data input

  • Enter the following data:
    • Registration number
    • Key numbers
    • Vehicle identification number
    • Fuel
    • Mileage

The following vehicle data can be found in the vehicle registration certificate part 1:

  • Registration number: "e.g. WOB-HH 1234"
  • Emission key: "field 14.1 (code for field 14)"
  • 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. manual
  • 2. Bar code input of EET data sheet
  • 3. ELSA web service

NOTICE If there is no ESP to deactivate the engine speed limiter, the rev limit can be measured using the engine speed limited by the control unit. To do this, all the EET specifications must be entered manually.

To use the ELSA web service, the emissions testing station used for the exhaust emissions test must be connected to the workshop network.

For the ELSA web service the vehicle specified data are automatically transmitted via the network to the respective mask.

Manual specified data input for EET:

NOTICE All test conditions and data required for exhaust emissions test.

If the engine speed limiter 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 display.
  • 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. Rev limit
  7. Rev limit measuring period (1 second)
  8. Sticker value
  9. Select probe type (number of probe)
  10. Select measuring mode
  11. Measured period portion

NOTICE In practice, the person carrying out the emissions testing must use the vehicle-related sticker value on the type plate as an emissions testing limit value.

If there is no sticker value, use the manufacturer's opacity value which can be gleaned from ELSA.

If there is neither a sticker value nor manufacturer's value for the vehicle, the legally prescribed opacity values are to be used (2.5 m -1 or 1.5 m -1 depending on date of first registration).

An opacity value of max. 0.5 m -1 applies for all Euro 6 vehicles.

Specified data input for EET as bar code:

  • If EET nominal data is present in bar code format then read in bar code of EET data sheet using reader pen.

If the opacity value on the emissions test data sheet deviates from that on the type plate sticker, the sticker value must be entered manually.

visual inspection

  • Perform visual check of all exhaust emissions relevant components.
  • Check if exhaust system is fitted and complete and check for leaks and damage.

Execution

  • Follow instructions of emissions testing station .

Evaluation

NOTICE If the exhaust emissions test was performed with an active rev limiter, enter the following in the test log: "The test was performed with the automatic engine speed limit of 2500 rpm."

Glossary

The following clarifications and definitions concern only the "Precise maintenance" log book, and are therefore not universally valid.

Glossary

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