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Hyundai CVVT oil control valve

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Hyundai CVVT oil control valve

When diagnosing the Continuously Variable Valve Timing (CVVT) system for rough idling, poor acceleration, camshaft timing misalignment-related trouble codes, misfire-related trouble codes and/or other related symptoms, it may be required to inspect the Oil Control Valve (OCV) for proper operation.

APPLICABLE VEHICLES

ENGINE                   VEHICLE MODEL / OCV SUPPLIER

Alpha 1.6L               Accent (MC) / Denso

Beta 2.0L                 2003-2006 SULEV Elantra (XD)

                                  2004-2008 Tiburon 2.0L (GK)

                                  Tucson 2.0L (JM), Elantra (HD)

                                  Elantra Touring (FD) / all Denso

Theta 2.0L/2.4L      Genesis Coupe (BK), Sonata (NF) / Denso

Mu 2.7L                     Santa Fe (CM) / Delphi

Lambda 3.3L/3.8L  Sonata (NF), Santa fe (CM), Azera (TG)

                                    Veracruz (EN), Entourage (EP)

                                    Genesis Coupe (BK), Genesis Sedan (BH) / all Delphi

Tau 4.6L                    Genesis Sedan (BH) /  Denso

 RELEVANT DTCs

 P0011

"A" camshaft position - timing over-advanced or system performance (Bank 1)

P0012

"A" camshaft position - timing over-retarded (Bank 1)

P0014

"B" camshaft position - timing over-advanced or system performance (Bank 1)

P0015

"B" camshaft position - timing over-retarded (Bank 1)

P0016

Crankshaft position-camshaft position correlation (Bank 1 Sensor A)

P0018

Crankshaft position-camshaft position correlation (Bank 2 Sensor A)

P0021

"A" camshaft position - timing over-advanced or system performance (Bank 2)

P0022

"A" camshaft position - timing over-retarded (Bank 2)

P0300

Random/multiple cylinder misfire detected

OCV COIL RESISTANCE SPECIFICATION

OCV SUPPLIER   COIL RESISTANCE AT 68 DEG. F

Denso          6.9 - 7.9 Ohms

Delphi         6.7 - 7.7 Ohms

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INSPECTION PROCEDURE

1. Measure the resistance between the OCV power and signal terminals

MEASURED RESISTANCE                

Denso (6.9 - 7.9 Ohms)

Delphi (6.7 - 7.7 Ohms)

RECOMMENDED ACTION

Check if the OCV operates normally by providing 12V power

MEASURED RESISTANCE

Infinity (OPEN)              

RECOMMENDED ACTION

Open circuit - replace the OCV

MEASURED RESISTANCE

Below specified range or zero

RECOMMENDED ACTION

Short circuit - replace the OCV

2. Check if the OCV operates normally by providing 12V power.

IMPORTANT: Careful attention is necessary to avoid a short circuit when providing the OCV with 12V power. Spacing between the OCV power and signal terminals is very narrow. Use suitable connections to prevent shorting of the test power supply.

3. When 12V power is provided to the OCV, the OCV must move forward as shown in the following photo.

4. If the OCV does not move forward, inspect for a foreign object (such as an aluminum chip.....example C) that may be jammed inside the OCV. Blow out the foreign object using compressed air and verify that the fault is corrected. If there is no damage to the OCV, do not replace the OCV.

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