A4 Mk1
Secondary air system
Testing secondary air pump relay -J299 and activation
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Special tools and workshop equipment required
Fitting location=>Fitting locations overview Test sequence
=> Motronic injection and ignition system; Repair group 01; Final control diagnosis |
A - If the relay does not pick up:
B - If the relay picks up but the secondary air pump motor does not run:
Testing voltage supply of secondary air pump relay
If the specification is not obtained: |
=> Current flow diagrams, Electrical fault finding and Fitting locations
If the specification is not obtained:
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=> Current flow diagrams, Electrical fault finding and Fitting locations Testing activation of secondary air pump relay
=> Motronic injection and ignition system; Repair group 01; Final control diagnosis
If the LED does not flash:
If no fault is found:
Testing voltage supply to secondary air pump motor
=> Motronic injection and ignition system; Repair group 01; Final control diagnosis
If the LED does not flash:
=> Current flow diagrams, Electrical fault finding and Fitting locations
=> Current flow diagrams, Electrical fault finding and Fitting locations If no fault is found:
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