Relay Box (Engine Compartment) Repair Procedures

Inspection

1. 1
   Disconnect the negative (-) battery terminal.
2. 2
   Remove the relay from the engine room relay box.
3. 3
   With power applied to the power relay terminals No. 85 and 86, check for continuity between terminals No. 30 and 87.
4. 4
   With power off, between power relay terminals No. 85 and 86, check that there is no continuity between terminals No. 30 and 87. Engine Room Relay Box

   

   Diesel Box

   

   

5. 5
   With power applied to the power relay terminals No. 85 and 86, check for continuity between terminals No. 30 and 87.
6. 6
   With power removed from the power relay terminals No. 85 and 86, check that there is no continuity between terminals No. 30 and 87.

   

   

   

7. 7
   Disconnect the battery negative (-) terminal.
8. 8
   Press the four hooks in the direction of the arrow and lift the metal core PCB block (A).

   

9. 9
   Remove the metal core PCB by disconnecting the connector.
10. 10
    Make sure the fuse holders are secured and that the fuses are firmly retained by the holders.
11. 11
    Make sure that each fuse circuit has the correct fuse rating.
12. 12
    Inspect the fuses for damage.

    If a fuse must be replaced, be sure to use a new fuse of the same rating. Always determine the cause of a blown fuse and fully correct the problem before installing a new fuse.

    

    

    

Power Relay (Type A) Check the circuit continuity between terminals. A: Starter Relay. Power Relay (Type B) Check the circuit continuity between terminals. A: Cooling Fan Relay. Metal Core PCB Block Fuse Multi Fuse. The engine room fuse is designed to optimize the package.

The entire multi fuse must be replaced, even if only one fuse is damaged. When replacing it, refer to "Engine Compartment - Component Location" to check the fuse ratings and circuit assignments. Use a multi fuse with the correct fuse rating for each circuit.