Replacing Fuses and Relays

IMPORTANT: Avoid damage! The electrical system can be damaged if incorrect replacement fuses are used. Replace the defective fuse with a fuse of the same ampere rating.


Locating Fuses and Relays

All electrical circuits are protected by fuses. Ampere rating is marked on each fuse, plus fuses are color coded to ensure proper replacement.

Fuses

Fuse Rating

Color

10A

Red

15A

Blue

20A

Yellow

30A

Green


Fuse Location—OOS

  1. Park machine safely. (See Parking Safely in the Safety section.)

  2. Open hood.

  3. LV17953
    LV17953-UN-04JUN13

    LV17954
    LV17954-UN-04JUN13

    A - Hood Cowl Latch

    B - Hood Cowl

    C - Load Center Cover

    Pull hood cowl latch (A) out and up on both sides.


  4. Remove hood cowl (B).

  5. Remove load center cover (C).

  6. Identify fuse or relay in the fuse block.

  7. Pull out defective relay or fuse.

  8. Replace with the new relay or fuse.

  9. Install load center cover.

  10. Line up hood cowl and gently slide into place.

  11. Close hood.


Fuse Location—Cab

  1. Park machine safely. (See Parking Safely in the Safety section.)

  2. LV17956
    LV17956-UN-04JUN13

    LV17957
    LV17957-UN-04JUN13

    A - Fuse Cover

    B - Load Center Cover

    Pull fuse cover (A) out.


  3. Remove load center cover (B).

  4. Identify fuse or relay in the fuse block.

  5. Pull out defective relay or fuse.

  6. Replace with the new relay or fuse.

  7. Install load center cover.

  8. Replace fuse cover.


Fuse Location—Junction Block (4066M and 4066R Tractors)

CAUTION: Verify which fuse configuration is on your machine and replace with same rated fuse. Damage to machine could occur if incorrect fuse is installed.

NOTE: ECU and Junction block fuses are located near the battery.

  1. Park machine safely. (See Parking Safely in the Safety section.)

  2. LV23675
    LV23675-UN-30JAN15

    Open Station—Front Grill Area Near the Battery—20 A fuse configuration for 4066 shown

    LV23676
    LV23676-UN-30JAN15

    Cab—Right Side of Cab Near Battery Box—20 A fuse configuration for 4066 shown

    B - 20 A Junction Block Fuse

    Identify defective 20 A Junction Block Fuse (A).


  3. Pull out defective fuse.

  4. Replace with the new fuse.


Fuse and Relay Size and Function

Open Operator Station

LVP11021
LVP11021-UN-02JUN20

Open Operator Station - LVU27153

F01 - Key Switch Fuse (30A)

F02 - Power Port Fuse (Option) (15A)

F03 - Come Home Fuse

F04 - Light Switch Fuse (30A)

F05 - Ignition Power Fuse (15A)

F06 - Work Light Fuse (Option) (20A)

F07 - Marker Light 1 Fuse (15A)

F08 - Headlight Fuse (15A)

F09 - Accessory Fuse (15A)

F10 - Air Ride Seat Fuse (Option) (15A)

F11 - EGR Fuse (Option) (10A)

F12 - 7 Pin Trailer Fuse (20A)

F13 - TCM Fuse (10A)

F14 - ELX Fuse (10A)

F15 - Display Panel Fuse (30A)

F16 - Brake Lights Fuse (15A)

F17 - Marker Light 2 Fuse (15A)

F22 - Junction Block Fuse (30A)

K1 - Spare

K2 - EGR Valve Relay (Option)

K3 - Brake Light Relay

K4 - 7 Pin Trailer Relay

Cab

LVP11022
LVP11022-UN-02JUN20

Cab - LVU34441

F01 - Key Switch Fuse (30A)

F02 - Power Port Fuse (Option) (15A)

F03 - Come Home Fuse

F04 - Light Switch Fuse (30A)

F05 - Ignition Power Fuse (15A)

F06 - Work Light Fuse (25A)

F07 - Right Tail Light Fuse (15A)

F08 - Headlight Fuse (15A)

F09 - Accessory Fuse (15A)

F10 - Air Ride Seat Fuse (Option) (15A)

F11 - EGR Fuse (Option) (10A)

F12 - 7 Pin Trailer Fuse (20A)

F13 - TCM Fuse (10A)

F14 - ELX Fuse (10A)

F15 - Display Panel Fuse (30A)

F16 - Brake Lights Fuse (15A)

F17 - Left Tail Light Fuse (15A)

F18 - Roof Power 2 Fuse (20A)

F19 - Wiper Fuse (20A)

F20 - Roof Power 1 Fuse (20A)

F22 - Junction Block Fuse (30A)

F23 - HCC Fuse (10A)

K1 - Work Light Relay

K2 - EGR Valve Relay (Option)

K3 - Brake Light Relay

K4 - 7 Pin Trailer Relay


Rear Outlet SCV Load Center Fuse and Relays (If Equipped)

NOTE: SCV load center is on the left side of the seat on OOS and on a cab tractor, next to the right rear tire on the back of the tractor.

  1. Park machine safely.

  2. LV18069
    LV18069-UN-11JUN13

    Open Operator Station

    LV18070
    LV18070-UN-11JUN13

    Cab

    A - Access Cover

    Pry open tabs on the load center access cover (A) and lift to remove.


  3. Pull defective fuse or relay from socket.

  4. Push new fuse or relay into socket.

  5. Install load center access cover.

Fuse and Relay Size and Function

LV19399
LV19399-UN-15OCT13

LVU27801

D1 - Diverter Power Diode

D2 - Third EH Diode

D3 - Dual Rear Diode

D4 - Diverter Auxiliary Power Diode

D5 - Third EH Diode

F1 - EH Hydraulics Power Fuse (10A)

KE1 - KE1 Dual Rear Continuous Relay

KE2 - Third EH Hydraulics Relay

KE3 - Third EH Hydraulics Relay

KE4 - Third EH A Control Relay

KE5 - Third EH B Control Relay

KE6 - Diverter Downforce Relay

KE7 - Third EH Hydraulics Temperature Relay

KE8 - KE8 Diverter-Continuous Lockout Relay

KE9 - Third EH A Lockout Relay

KE10 - Third EH B Lockout Relay

PP71895,000145F-19-20200608