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Home >> Mazda >> 2021 >> 3 Base >> Repair and Diagnosis >> Electrical >> Body Electrical >> Power Systems >> Relay And Fuse Block Removal/Installation >> Removal
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Relay And Fuse Block Removal/Installation: Removal

  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .)
  2. Remove the air cleaner case. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [(VIN 7 & VIN L) (US)] .) (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [(VIN M) (US)] .) (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [VIN Y] .)
  3. Remove the battery tray. (See BATTERY REMOVAL/INSTALLATION [(VIN 7 & VIN L) (US)] .) (See BATTERY REMOVAL/INSTALLATION [(VIN M) (US)] .) (See BATTERY REMOVAL/INSTALLATION [(VIN Y) (US)] .)
  4. While pressing the relay and fuse block upper cover hook in the direction of the arrow (1) shown in the figure, lift up the relay and fuse block upper cover in the direction of the arrow (2) to detach the relay and fuse block upper cover hook from the relay and fuse block middle cover tab.
    G13179897Courtesy of MAZDA MOTORS CORP.
  5. Remove the relay and fuse block upper cover.
  6. Remove all the relays and fuses.
    CAUTION:
    • If the relay and fuse block is removed with the relays and fuses installed, the area around the relay and fuse block may contact the relays or fuses and damage the them. Before removing the relay and fuse block, remove all the relays and fuses.
  7. Disconnect the wiring harness connectors.
    G13718404Courtesy of MAZDA MOTORS CORP.
  8. Remove the nuts.
    G13561143Courtesy of MAZDA MOTORS CORP.
  9. Pull out the relay and fuse block from the stud bolts and set it aside as shown in the figure.
    G13561144Courtesy of MAZDA MOTORS CORP.
  10. While pressing the clip tabs of front wiring harness protector in the direction of the arrows (1) shown in the figure, pull the clip of front wiring harness protector in the direction of the arrow (2) shown in the figure to detach the clip tabs of front wiring harness protector from the body.
    G13179901Courtesy of MAZDA MOTORS CORP.
  11. Pull out the front wiring harness protector clip.
  12. Lift up the front wiring harness protector caps in the direction of the arrow shown in the figure.
    G13561146Courtesy of MAZDA MOTORS CORP.
  13. Pull out the front wiring harness protector from the stud bolt and set it aside as shown in the figure.
    G09788460Courtesy of MAZDA MOTORS CORP.
  14. Cut the bands shown in the figure.
    G13561148Courtesy of MAZDA MOTORS CORP.
  15. Insert a flathead screwdriver into the gap between the relay and fuse block middle cover tabs and the relay and fuse block lower cover as shown in the figure.
    G13561149Courtesy of MAZDA MOTORS CORP.
  16. Move the flathead screwdriver in the direction of the arrow (1) shown in the figure, and pull down the relay and fuse block lower cover in the direction of the arrow (2) shown in the figure to detach the relay and fuse block middle cover tab from the relay and fuse block lower cover.
    G13561150Courtesy of MAZDA MOTORS CORP.
  17. Detach all of the relay and fuse block middle cover and the relay and fuse block lower cover.
  18. While pressing the wiring harness clip tabs in the direction of the arrows (1) shown in the figure, push out the wiring harness clip in the direction of the arrow (2) shown in the figure to detach the wiring harness clip tabs from the relay and fuse block lower cover.
    G13561151Courtesy of MAZDA MOTORS CORP.
  19. Pull out the wiring harness clip.
  20. Remove the relay and fuse block lower cover.
  21. Insert a flathead screwdriver into the service hole in the position shown in the figure.
    G13179908Courtesy of MAZDA MOTORS CORP.
  22. Remove the wiring harness connectors.
    G13718415Courtesy of MAZDA MOTORS CORP.
  23. Remove the relay and fuse block middle cover in the direction of the arrow shown in the figure.
    G13179910Courtesy of MAZDA MOTORS CORP.
  24. Remove the bolt.
    G13179911Courtesy of MAZDA MOTORS CORP.
  25. Remove the power supply cable.
  26. Disconnect the wiring harness connectors.
    G13179912Courtesy of MAZDA MOTORS CORP.
  27. Detach all the relay and fuse block tabs from the relay and fuse block middle cover, and remove the relay and fuse block middle cover.
  28. Set the removed relay and fuse block aside so that it does not scratch the vehicle and parts.
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