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Home >> Suzuki >> 1991 >> Samurai JS >> Repair and Diagnosis >> External Pages >> Different car >> Section 34 (Engine Cooling System) >> Diagnostic Information and Procedures >> Cooling Fan Always On >> Component Testing
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Component Testing

WARNING: This page is about a different car, the 2007 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the cooling fan relay.
  2. Test for 70-110 ohms of resistance between terminals 85 and 86.
    • If the resistance is not within the specified range, replace the relay.
  3. Test for infinite resistance between the following terminals:
    • 30 and 86
    • 30 and 87
    • 30 and 85
    • 85 and 87
      • If not the specified value, replace the relay.
  4. Test for less than 2 ohms of resistance between terminals 30 and 87A.
    • If greater than the specified value, replace the relay.
  5. Install a 20A fused jumper wire between relay terminal 85 and 12 volts. Install a jumper wire between relay terminal 86 and ground. Test for less than 2 ohms of resistance between terminals 30 and 87.
    • If greater than the specified value, replace the relay.