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Home >> Chevrolet >> 2000 >> Metro Base, 2D Hatchback >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Cooling Fan >> Engine Cooling Fan System - Troubleshooting >> Electric Cooling Fan Circuit Diagnosis >> 1.9L SATURN "S" Series >> Cooling Fan Inoperative

Cooling Fan Inoperative

NOTE: If DTC P0480 or P1480 are present, diagnose DTC first. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
  1. Connect scan tool. Turn ignition on, engine off. Using scan tool, command cooling fan relay on and off. If cooling fan motor follows command, problem is intermittent. If cooling fan motor does not follow command, go to next step.
  2. Remove cooling fan relay from underhood fuse block. Connect jumper wire between left rear and right front terminals of relay connector or install known good relay. If cooling fan runs, check relay connector. If connector is good, replace relay. If cooling fan does not run, go to next step.
  3. Reinstall cooling fan relay. Disconnect cooling fan motor. Connect test light between terminals of cooling fan motor harness connector. Using scan tool, command cooling fan relay on. If test light is on, check cooling fan motor connector. If connector is good, replace cooling fan motor. If test light is not on, go to next step.
  4. Connect test light between cooling fan connector terminal "B" (Light Blue wire) and ground. With cooling fan commanded on, if test light is on, repair Black wire between cooling fan motor and ground. With cooling fan commanded on, if test light is off, repair open in Light Blue wire between underhood fuse block and cooling fan motor.
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