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Relay And Fuse Block Removal/Installation: Notes

Replacement Part 

Band
Quantity: 2
Location of use: Relay and fuse block
  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  2. Remove the air cleaner assembly. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [VIN L (WITHOUT CYLINDER DEACTIVATION)] .) (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT EGR COOLER)] .) (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G (WITH EGR COOLER)] .) (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [VIN Y] .)
  3. Remove the battery and the battery tray. (See BATTERY REMOVAL/INSTALLATION [VIN M, VIN L (WITH CYLINDER DEACTIVATION)] .) (See BATTERY REMOVAL/INSTALLATION [VIN L (WITHOUT CYLINDER DEACTIVATION)] .) (See BATTERY REMOVAL/INSTALLATION [VIN Y] .)
  4. While pressing the relay and fuse block upper cover hook in the direction of the arrow (1) shown in the figure below, 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.
    G13115546Courtesy of MACK TRUCKS, INC.
  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. Remove the front body control module (FBCM). (See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION .)
  8. While pressing the relay and fuse block hook in the direction of the arrow (1) shown in the figure below, set the emission wiring harness away from the relay and fuse block hook.
    G13115547Courtesy of MACK TRUCKS, INC.
  9. Disconnect the emission wiring harness connectors.
    G13115548Courtesy of MACK TRUCKS, INC.
  10. Remove the nut and bolt.
    Fig 1: Relay And Fuse Block Nut And Bolt With Torque Specification
    G13115549Courtesy of MACK TRUCKS, INC.
  11. Insert a tape-wrapped flathead screwdriver into the service hole in the position shown in the figure below.
    G13115550Courtesy of MACK TRUCKS, INC.
  12. While pressing the clip tab of the relay and fuse block in the direction of the arrow (1) shown in the figure below, pull the clip in the direction of the arrow (2) to detach the clip tab from the engine mount.
    G13115551Courtesy of MACK TRUCKS, INC.
  13. Pull out the relay and fuse block from the stud bolt and set it aside as shown in the figure below.
    G13115552Courtesy of MACK TRUCKS, INC.
  14. While pressing the clip tabs of front wiring harness protector No. 2 in the direction of the arrows (1) shown in the figure below, pull the clip in the direction of the arrow (2) shown in the figure below to detach the clip tabs from the engine mount.
    G13115553Courtesy of MACK TRUCKS, INC.
  15. Remove the front wiring harness protector No. 2 clip.
  16. Lift up the front wiring harness protector No. 2 cap in the direction of the arrow (1) shown in the figure below.
    G13115554Courtesy of MACK TRUCKS, INC.
  17. Pull out front wiring harness protector No. 2 from the stud bolt and set it aside as shown in the figure below.
    G13115555Courtesy of MACK TRUCKS, INC.
  18. Cut the band shown in the figure below.
    G09077767Courtesy of MACK TRUCKS, INC.
  19. 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 below.
    G09077768Courtesy of MACK TRUCKS, INC.
  20. Move the flathead screwdriver in the direction of the arrow (1) shown in the figure below, pull down the relay and fuse block lower cover in the direction of the arrow (2) shown in the figure below, and detach the relay and fuse block middle cover tabs from the relay and fuse block lower cover.
    G13115558Courtesy of MACK TRUCKS, INC.
  21. Detach all the relay and fuse block middle cover tabs from the relay and fuse block lower cover, and remove the relay and fuse block lower cover from the relay and fuse block middle cover. (See Relay and Fuse Block Lower Cover Installation Note .)
  22. While pressing the wiring harness clip tabs in the direction of the arrows (1) shown in the figure below, push out the clip in the direction of the arrow (2) shown in the figure below to detach the clip tabs from the relay and fuse block.
    G13115559Courtesy of MACK TRUCKS, INC.
  23. Insert a flathead screwdriver into the service hole in the position shown in the figure below.
    G13115560Courtesy of MACK TRUCKS, INC.
  24. Move the flathead screwdriver in the direction of the arrow (1) shown in the figure below, lift up the front wiring harness connectors in the direction of the arrow (2) shown in the figure below, and detach the connector tabs from the relay and fuse block middle cover.
    G13115561Courtesy of MACK TRUCKS, INC.
  25. Move the front wiring harness connector in the direction of the arrow (1) shown in the figure below, release the hook, and pull it out from the relay and fuse block middle cover.
    G13115562Courtesy of MACK TRUCKS, INC.
  26. Insert the flathead screwdriver into the gap between the relay and fuse block middle cover and the relay and fuse block shown in the figure below.
    G13115563Courtesy of MACK TRUCKS, INC.
  27. Move the flathead screwdriver in the direction of the arrow (1) shown in the figure below, pull up the relay and fuse block middle cover in the direction of the arrow (2) shown in the figure below, and detach the relay and fuse block tabs from the relay and fuse block middle cover.
    G13115564Courtesy of MACK TRUCKS, INC.
  28. Remove the bolt.
    Fig 2: Ground Bolt With Torque Specification
    G09077776Courtesy of MACK TRUCKS, INC.
  29. Remove the ground.
  30. Move the flathead screwdriver in the direction of the arrow (1) shown in the figure below, pull the wiring harness in the direction of the arrow (2) while pressing the stopper, and detach the relay or fuse terminal from the stopper.
    G13115566Courtesy of MACK TRUCKS, INC.
  31. Remove the relay or fuse terminal.
    CAUTION:
    • A terminal disconnection could cause electronic components and the system to not operate normally due to poor contact. After terminal relocation, lightly pull the wiring harnesses to verify that they cannot be pulled out.
    NOTE:
    • For terminal relocation, line up the relays and fuse blocks of the old and news parts and always verify each of the wiring harnesses in the wiring diagram.
    G09077778Courtesy of MACK TRUCKS, INC.
  32. Install in the reverse order of removal.
  33. Perform verify relay and fuse block replacement. (See Verify Relay and Fuse Block Replacement .)
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