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Home >> Volvo >> 1997 >> V90 AW30-43 >> Repair and Diagnosis >> Engine Mechanical >> Electric Cooling Fans >> System Tests >> Checking Ground Lead

Checking Ground Lead

NOTE: Perform this test if directed from CHECKING COOLING FAN MOTOR  .
  1. Turn ignition off.
  2. Unplug connector C from cooling fan relay. See Figure .
  3. Check cooling fan ground terminal (31/64) for contact resistance and oxidation. See Figure or Figure . Clean as necessary.
  4. Connect an ohmmeter between connector C, terminal 2 and ground. Resistance should be 0-10 ohms.
  5. If reading is okay, engine cooling was not working due to poor ground circuit.
  6. If reading is incorrect, try a new engine cooling fan.
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