Hyundai Ioniq (AE): Fuel Delivery System / Release residual pressure in fuel line

Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual / Engine Control/Fuel System / Fuel Delivery System / Release residual pressure in fuel line

Release Residual Pressure in Fuel Line
   
•
Whenever the high pressure fuel pump, fuel pipe, delivery pipe, or injector is removed immediately after shutting off the engine, an injury may be caused by the release of highly pressurized fuel. Release the residual pressure in the high pressure fuel line by referring to the "Residual fuel pressure release procedure" below before removing any high pressure fuel system components.
   
•
Wear safety glasses and fuel resistant gloves.
1.
Turn the ignition off and disconnect the battery negative cable.
2.
Remove the fuel pump fuse (A).

3.
Disconnect the electrical connector from the high pressure fuel pump.
4.
Reconnect the battery negative cable.
5.
Run the engine for about 20 seconds to lower the pressure in both the high or low pressurelines. The engine may shut off within the 20 second period. If not, turn the engine off.
6.
Proceed with the service or repair. Use rags to cover opening and catch spills when opening up the high pressure system.
7.
Reinstall / re-connect all components in reverse order of removal. Start engine and confirm proper operation, and make sure there are no fuel leaks.
8.
After completing, clear DTC(s) using GDS scan tool (the procedure described above will cause DTC to set).

    Fuel Pressure Test1.Release the residual pressure in fuel line.(Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line")    â€¢ When removing the fuel pump fuse, a Diagnostic Trouble Code (DTC) may occur.

    Removal1.Turn the ignition switch OFF and disconnect the battery negative (-) cable.2.Remove the rear seat cushion. (Refer to Body - "Rear Seat Assembly")3.

    Other information:

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: PTC Heater. Description and operation

    DescriptionThe PTC (Positive Temperature Coefficient) heater is installed at the exit or the backside of the heater core.The PTC heater is an electric heater using a PTC element as an auxiliary heating device that supplements deficiency of interior heat source in highly effective hybrid engine.

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Auto Defoging Actuator. Description and operation

    DescriptionThe auto defogging sensor is installed on front window glass. The sensor judges and sends signal if moisture occurs to blow out wind for defogging. The air conditioner control module receives a signal from the sensor and restrains moisture and eliminates defog by the intake actuator, A/C, auto defogging actuator, blower motor rpm and mod

    Categories

     
    Copyright © 2026 www.hioniqae.com - 0.014