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Exhaust system > < Secondary air pump motor: checking

Leon Mk1

Secondary air inlet valveN112: checking
Secondary air inlet valve -N112-: checking
Special tools and workshop equipment required
   
t  Measuring tool set -VAG 1594C-
  W00-10008
t  Voltage tester -VAG 1527B-
Test requirements
l  Coolant temperature 5 ... 33 °C
l  Secondary air pump motor, OK Testing → Chapter
Test sequence
  W00-0513
–  Detach upper vacuum hose -arrow-.
–  Start engine and run at idling speed.
When secondary air pump motor is started, a vacuum in the secondary air intake valve must be observed.
If no vacuum is found:
–  Switch off ignition.
  E26-10005
–  Extract 2-pin connector from secondary air inlet valve -arrow-.
  E26-10006
–  Connect voltage tester -VAG 1527B- with measuring tool set -VAG 1594C- to disconnected terminal connector of.
–  Start engine and run at idling speed. The LED must light.
If LED lights (voltage supply OK):
–  Switch off ignition.
–  Replace the Secondary air inlet valve -N112-.
If LED does not light:
–  Plug in a 2-pin connector.
–  Start the switch diagnostics and activate the Secondary air inlet valve -N112- → Vehicle diagnosis, testing and information system VAS 5051.
–  Interrogating fault memory: → Vehicle diagnosis, testing and information system VAS 5051.
–  Take readiness code reading: → Vehicle diagnosis, testing and information system VAS 5051.
–  If the fault memory has been erased, you must generate the readiness code again → Vehicle diagnosis, testing and information system VAS 5051.
  N01-0134

Exhaust system > < Secondary air pump motor: checking