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Home >> Suzuki >> 2007 >> XL7 Base, AWD >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System >> Diagnostic Information and Procedures >> Cooling Fan Inoperative >> Circuit/System Testing
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Circuit/System Testing

  1. Ignition OFF, disconnect the cooling fan relays.
  2. Ignition ON, one at a time, verify that a test lamp illuminates between the relay switch B+ circuit terminal 30 and ground.
    • If the test lamp does not illuminate, test the relay switch B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the relay switch B+ circuit fuse is open, test all components connected to the relay switch B+ circuit and replace as necessary.
  3. Connect a 30A fused jumper between the relay switch B+ circuit terminal 30 and the relay supply circuit terminal 87 at the FAN 2 relay connector. This will in complete the left side or main fan ground circuit. Leave this jumper in place for the remainder of this procedure.
  4. One at a time, connect a 30A fused jumper between the relay switch B+ circuit terminal 30 and the relay switch supply circuit terminal 87 of the applicable fan relay. Verify the appropriate fan turns ON.
    • If the appropriate fan does not turn ON, test the relay switch supply circuit for a short to ground or open/high resistance. If the circuit tests normal, test the fan ground circuit for open/high resistance. If the circuit tests normal, replace the fan.
  5. If all circuits test normal, test or replace the appropriate cooling fan relays.
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