Hyundai Tucson: Power Relay (Type A)

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Body Electrical System / Fuses And Relays / Power Relay (Type A)

 Component Location

  1. Engine room junction block
  2. ICU Junction block


Power Relay (Type A)

  1. There should be continuity between the No.30 and No.87 terminals when power and ground are connected to the No.85 and No.86 terminals.
  2. There should be no continuity between the No.30 and No.87 terminals when power is disconnected.

Engine room relay box

Replacement of PCB Block

Replacement of PCB Block

  1. Disconnect the negative (-) battery terminal.
  2. Push 4 hooks in the engine room relay box out to the arrow direction and put up the PCB block (A).

  1. Disconnect the connector and remove the the PCB block (A).


  1. Be sure there is no play in the fuse holders, and that the fuses are held securely.
  2. Are the fuse capacities for each circuit correct?
  3. Are there any blown fuses?
  • If a fuse is to be replaced, be sure to use a new fuse of the same capacity. Always determine why the fuse blew first and completely eliminate the problem before installing a new fuse.

Multi Fuse

  • Multi fuse (A) is needed to replace in the mass when it damaged only one fuse.
  • Use the multi fuse capacities for each circuit correctly.


     ICU (Integrated Central Control Unit)

    Dscription and Operation ICU (Integrated Central Control Unit) is an integrated model of smart junction block and central gateway. It performs the function of conventional "Smart junction block" and the function of communication med

     Indicators And Gauges

    Troubleshooting Description Cluster Variant Coding As we have more options (SCC, VDC, EPB, Cubis, MDPS, TPMS. LDWS, ECS -) in the car, the dashboard now has more information to display depending on the chosen options. For this reason, we

     Power Door Locks

    Front Door Lock Module Inspection Inspection Remove the front door trim. (Refer to Body - "Front Door Trim") Disconnect the connectors from the actuator. Check actuator operation by connecting power and ground according to the


     Electro Chromic Inside Rear View Mirror

    Description Electro Chromic Inside Rear View Mirror The ECM (Electro Chromatic inside rear view Mirror) is intended dim the reflecting light in the rear view mirror. The forward facing sensor detects brightness of the surroundings, while the r

     Intelligent Manaul Transaxle Type

    Turn ignition switch OFF and disconnect the negative (-) battery cable. Disconnect the ignition lock & clutch switch connector (A). Loosen the bolts (A) and then removing the ignition lock & clutch switch (B). Tightening