Hyundai Sonata LF: Cylinder Head Assembly / Cylinder Head Cover Repair procedures

Hyundai Sonata LF 2014-2019 Service Manual / Engine Mechanical System / Cylinder Head Assembly / Cylinder Head Cover Repair procedures

Removal
1.
Remove the engine cover.
2.
Disconnect the battery negative terminal.
3.
Remove the air clean hose.
(Refer to Intake and Exhaust System - "Ari Cleaner")
4.
Disconnect the engine wiring connector and haness clamp and then remove the cylinder head protector and wiring from engine.

5.
Disconnect the exhaust OCV (Oil Control Valve) connector.
(Refer to Fuel System - "CVVT Oil Control Valve")
6.
Disconnect the ignition coil.
(Refer to Engine Electrical System - "Ignition Coil")
7.
Remove the PCV (Positiv Crankcase Ventilation) hose(A).

8.
Remove the high pressure fuel pump.
(Refer to Fuel System - "High Pressure Fuel Pump")
9.
Remove the cylinder head cover (A), gasket (B).

   
Loosen the cylinder head cover bolts with the order and steps.

Installation
1.
Install the cylinder head cover.
(1)
The hardening sealant located on the upper area between timing chain cover and cylinder head should be removed before assembling cylinder head cover.
(2)
After applying sealant, it should be assembled within 5 minutes.
Bead width : 2.0 ~ 3.0mm(0.07 ~0.11 in.)
Sealant : LOCTITE 5900H

(3)
Install the cylinder head cover (A) with a new gasket (B).

   
Do not reuse the disassembled gasket.
(4)
Tighten the cylinder head cover bolts with the order and steps.
Tightening torque
1st step:
3.9 ~ 5.9 N.m (0.4 ~ 0.6 kgf.m, 2.9 ~ 4.3 lb-ft)
2nd step: 7.8 ~ 9.8 N.m (0.8 ~ 1.0 kgf.m, 5.8 ~ 7.2 lb-ft)

2.
Install in the reverse order of removal.

    Cylinder Head Cover Components and Components Location

    C..

    CVVT & Camshaft Components and Components Location

    C..

    Other information:

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    Removal 1. Disconnect the negative (-) battery terminal. 2. If it is necessary to remove multifunction switch assembly, remove the steering wheel. (Steering System - "Steering Wheel") 3. Remove the steering column upper shrouds (A). (Refer to Body - "Steering Column Shroud Panel") 4...

    Hyundai Sonata LF 2014-2019 Service Manual: Engine Control Module (ECM) Schematic Diagrams


    ECM Terminal And Input/Output signal ECM Terminal Function Connector [C500-A] Pin No.DescriptionConnected to1Injector (Cylinder #3) [High] control outputInjector (Cylinder #3)2Injector (Cylinder #4) [High] control outputInjector (Cylinder #4)3Injector (Cylinder #2) [Low] control outputInjector (Cylinder #2)4Electric Waste Gate Actuator (EWGA) DC Motor output (+)Electric Waste Gate Actuator (EWGA) 5Heated Oxygen Sensor  (HO2S) [Bank 1/Sensor 1] heater control outputHeated Oxygen Sensor  (HO2S) [Bank 1/Sensor 1]6-?7-8-?9Sensor ground Electric Waste Gate Actuator (EWGA) 10-?11-?12-13-?14Cooling fan relay [High] control outputCooling fan relay [High]15CVVT Oil Control Valve (OCV) [Bank 1/Exhaust] control outputCVVT Oil Control Valve (OCV) [Bank 1/Exhaust]16Injector (Cylinder #2) [High] control outputInjector (Cylinder #2)17Injector (Cylinder #1) [High] control outputInjector (Cylinder #1)18Injector (Cylinder #3) [Low] control outputInjector (Cylinder #3)19Electric Waste Gate Actuator (EWGA) DC Motor output (-) Electric Waste Gate Actuator (EWGA) 20Heated Oxygen Sensor  (HO2S) [Bank 1/Sensor2] heater control outputHeated Oxygen Sensor  (HO2S) [Bank 1/Sensor 2]21-?22-?23Engine Coolant Temperature Sensor (ECTS) signal inputEngine Coolant Temperature Sensor (ECTS)?24Sensor groundEngine Coolant Temperature Sensor (ECTS) 25-?26Fuel Tank Pressure Sensor (FTPS) signal inputFuel Tank Pressure Sensor (FTPS)27Fuel pump relay control output (NON-Smart key type)Fuel pump relayCanister Close Valve (CCV) control output  (Smart key type)Canister Close Valve (CCV)28-?29-30-?31Ignition coil (Cylinder #3) control outputIgnition coil (Cylinder #3)32Ignition coil (Cylinder #1) control outputIgnition coil (Cylinder #1)33Injector (Cylinder #1) [Low] control outputInjector (Cylinder #1)34Fuel Pressure Control Valve (FPCV) [High] control outputFuel Pressure Control Valve (FPCV)35ETC motor [-] control outputETC motor36-?37Knock Sensor (KS) signal inputKnock Sensor (KS)38Sensor groundKnock Sensor (KS)39-40Brake Light switch signal inputBrake switch41-42-43-?44-?45CVVT Oil Control Valve (OCV) [Bank 1/Intake] control outputCVVT Oil Control Valve (OCV) [Bank 1/Intake]46Ignition coil (Cylinder #4) control outputIgnition coil (Cylinder #4)47Ignition coil (Cylinder #2) control outputIgnition coil (Cylinder #2)48Injector (Cylinder #4) [Low] control outputInjector (Cylinder #4)49Fuel Pressure Control Valve (FPCV) [Low] control outputFuel Pressure Control Valve (FPCV)50ETC motor [+] control outputETC motor51-?52Electric Waste Gate Actuator (EWGA) Feed beck signal Electric Waste Gate Actuator (EWGA) 53Brake Test switch signal inputBrake switch54-?55-56Electric load signal input [Defrost]Alternator57Alternator COM signal outputAlternator58Engine speed signal outputCluster59Cooling fan relay [Low] control outputCooling fan relay [Low] 60- Connector [C500-K] Pin No...

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