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Home >> Audi >> 1994 >> S4 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Emission Systems & Sub-Systems >> EVAP Canister Purge Regulator Checking >> Checking Electrically
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Checking Electrically

  1. Disconnect EVAP canister purge regulator valve harness connector. See Figure.
  2. Switch DVOM multimeter to resistance range.
  3. Connect multimeter between EVAP canister purge regulator valve terminals. See Fig 1. Resistance must be 40-50 ohms.
  4. If resistance is incorrect, replace EVAP canister purge regulator valve.

Fig 1: Identifying EVAP Canister Purge Regulator Valve Terminals For Testing
G00177371Courtesy of AUDI OF AMERICA, INC.
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