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1.0L & 1.3L Metro & Firefly (CANADIAN): Diagnosis

  1. Install scan tool. Turn ignition on, engine off. Verify ECT sensor reading is less than 194°F (90°C). If cooling fan is not operating, go to next step. If cooling fan is operating, go to step  3.
  2. Turn ignition on, engine off. Using scan tool, clear DTCs. Command fan on and then off. If cooling fan operated when commanded on and shut off when commanded off, go to DIAGNOSTIC AIDS . If fan did not operate when commanded on and shut off when commanded off, go to step  7
  3. Ensure ECT is less than 194°F (90°C). Disconnect cooling fan relay located in relay box near battery. If cooling fan is not operating, go to next step. If cooling fan is operating, go to step  5.
  4. Using test light connected to battery voltage, probe cooling fan relay connector cavity No. 2 (Blue wire). If test light illuminates, go to step  6. If test light does not illuminate, go to step  16.
  5. Repair short to power in Blue or Blue/Red wire between cooling fan relay and cooling fan motor. See WIRING DIAGRAMS . After repairs, go to step  19.
  6. Check for short to ground in Blue wire between PCM and cooling fan relay. repair as necessary. After repairs, go to step  19. If repair was not necessary, go to step  17.
  7. Turn ignition on. Using test light connected to ground, probe cooling fan relay cavity No. 1 (Black/White wire). If test light illuminates, go to next step. If test light does not illuminate, go to step  14.
  8. Using test light connected to ground, probe cooling fan relay cavity No. 4 (Black/Blue wire). If test light illuminates, go to next step. If test light does not illuminate, go to step  15.
  9. Connect a fused jumper between cooling fan relay connector cavities No. 3 (Blue/Red wire) and No. 4 (Black/White wire). If cooling fan operates, go to next step. If cooling fan does not operate, go to step  12.
  10. Using test light connected to battery voltage, probe cooling fan connector cavity No. 2 (Blue wire). Using scan tool, command cooling fan on. If test light illuminates, go to step  16. If test light does not illuminate, go to next step.
  11. Check for open in Blue wire between PCM and cooling fan relay. Repair as necessary. After repairs, go to step  19. If repair was not necessary, go to step  17.
  12. Check for open in Blue or Blue/Red wire between cooling fan relay and cooling fan motor. Repair as necessary. See WIRING DIAGRAMS . After repairs, go to step  19. If repair was not necessary, go to next step.
  13. Check for open or poor terminal contact in Black wire between cooling fan motor and ground. Repair as necessary. After repairs, go to step  19. If repair was not necessary, go to step  18.
  14. Repair open in Black/White wire between cooling fan relay terminal No. 1 and junction block. After repairs, go to step  19.
  15. Repair open in Black/Blue wire between cooling fan relay terminal No. 4 and fuse box. After repairs, go to step  19.
  16. Replace cooling fan relay. After repairs, go to step  19.
  17. Replace PCM. After repairs, go to step  19.
  18. Replace cooling fan motor. After repairs, go to next step.
  19. Using scan tool, clear any DTCs and road test vehicle within freeze frame conditions that caused DTC to set. If any DTCs set, go to appropriate DTC. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If no DTCs are stored, system is okay at this time.
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