How Insufficient Air Flow From Floor – Air Duct

Insufficient Air Flow from Floor – Air Duct

Model: Santa Fe (SM)

Model Year: 2004

Fuel: Gasoline

Displacement: 2000cc

1) Study Guide and Condition:

1. Air flow from floor duct at passenger side is not enough.
2. When the blower motor operates, there is a difference in airflow between driver side and passenger side.Study Guide

2) Study Guide and Cause

• Floor air duct has been blocked due to the abnormal installation of floor mat

3) Diagnosis and Study Guide

1. The duck opening has been blocked by the mat under the passenger side.

4) Study Guide

1. Re install the floor mat at the passenger side.
2. more

Insufficient Air Flow From Floor – Air Duct

Insufficient Air Flow from Floor – Air Duct

Model: Santa Fe (SM)

Model Year: 2004

Fuel: Gasoline

Displacement: 2000cc

1) Study Guide and Condition:

1. Air flow from floor duct at passenger side is not enough.
2. When the blower motor operates, there is a difference in airflow between driver side and passenger side.Study Guide

2) Study Guide and Cause

• Floor air duct has been blocked due to the abnormal installation of floor mat

3) Diagnosis and Study Guide

1. The duck opening has been blocked by the mat under the passenger side.

4) Study Guide

1. Re install the floor mat at the passenger side.
2. more

How Centenial Equus Code P0016mWorks

How to Centennial Equus Code P0016 Works.

How Centennial Equus Code P0016 Works?

Model:Hyundai Centinial Equus VI

Year model:2010

Fuel: Gasoline

Displacement: 4600cc

 

P0016 Crankshaft Position–Camshaft Position Correlation (Bank 1 Sensor A)

Study Guide Component Location Study Guide General Description Study Guide A Crankshaft Position Sensor (CKPS) is a magnetic type sensor that generates voltage using a sensor and a target wheel mounted on the crankshaft. The PCM calculates engine RPM by using the sensor’s signal and controls the injection duration and the ignition timing. Study Guide Camshaft Position Sensor (CMPS) is a hall sensor and detects the camshaft position by using a hall element. It is related with Crankshaft Position Sensor (CKPS) and detects the piston position of the each cylinder which the CKPS can’t detect.Study Guide This CMPS signal is sent to the PCM and it uses CMPS signals for determining the ignition timing with CKPS signals. CMPS makes Sequential Injection possible. Study Guide DTC Description If the deviation between CKPS and CMPS(IN-CMPS Bank 1) is bigger than the threshold value, ECM sets DTC P0016. Study Guide DTC Detecting Condition Item Detecting Condition Possible Cause Case1 Study Guide DTC Strategy Study Guide • Camshaft install diagnosis • Poor connection • Contamination of Oil / Clog of Oil path • CKPS, CMPS • OCV • CVVT Enable Conditions • First firing detected after ECM installed or ‘Camshaft install fault exist • Adapted CMP - CMP < 2 Deg Threshold Value • | Adapted CMP – Set value |> 7 Deg Case2 DTC Strategy • Camshaft and crankshaft alignment check Enable Conditions • Adapted CMP - CMP < 2 Deg • Engine speed < 1500rpm • Engine load < 50% • ECT > 60C Threshold Value • | Adapted CMP – Set value – Adaped CMP during installdiagnosis | > 13 Deg Diagnostic Time • 6 camshaft rotations MIL On Condition • 2 driving cycle Diagnostic Circuit Diagram Signal Waveform & Data Fig.1) Normal waveform of CKPS & IN-CMPS Bank 1 at idle. more info and trouble shooting

How to Check P0340 CMP of Hyundai Sonata EF

How to Check P0340 CMP of Hyundai Sonata EF

How to Check P0340 CMP of Hyundai Sonata EF

Study Guide and General Description

2002  2.0 DOHC Engine  P0340 Camshaft Position Sensor Circuit Malfunction

Study Guide Component Location Study Guide Description 1. General Description Study Guide The Camshaft Position Sensor (CMPS) is a sensor that detects the compression TDC of the NO. 1 cylinder. The CMPS consists of a hall type sensor and a target on the end of the intake camshaft. When the target triggers the sensor, the sensor voltage is 5V. If not, the sensor voltage is 0V. These CMPS signal is sent to the ECM and the ECM uses the CMPS signal for synchronizing the firing of sequential fuel injectors.

2002   2.0 DOHC  Engine  Unleaded GEN(Siemens)  P0340 Camshaft Position Sensor Circuit Malfunction

Study Guide Terminal and Connector Inspection 1. Study Guide Many malfunctions in the electrical system are caused by poor harness(s) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage. 2. Study Guide Check the following conditions: (1) Study Check for damaged harness and terminals: contact resistance, oxidation, bent or broken terminals. (2) Study Check for poor connection between ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection Use a suitable male pin to ensure that contact in sockets is good. The pin should remain in position when pulled gently. 3. Study Has a problem been found? YES 1) Study Repair as necessary and go to "Verification of Vehicle Repair" procedure NO 1) Study Go to "Power Circuit Inspection" procedure. Power Supply Circuit Inspection Check Power to CMPS 1. Study IG KEY : OFF , Engine : OFF 2. Study Disconnect CMPS connectorC05. 3. Study IG KEY : ON , Engine : OFF 4. Study Measure voltage between terminal 3 of the CMPS harness connectorC05 and chassis ground. A. [Specification] Approx.B+ 5. Study Guide Is the voltage near the specified value? YES 1) Study Guide Go to "Ground Circuit Inspection" procedure. NO 1) Study Guide Repair open or short to ground in harness, Go to "Verification of Vehicle Repair" procedure. Study Guide Ground Circuit inspection Check for Open in Harness 1. Study Guide IG KEY : OFF , Engine : OFF 2. Study Guide Disconnect CMPS connectorC05 and ECM connector. 3. Study Guide Measure resistance between terminal 1 of the CMPS harness connectorC05 and chassis ground. A. [Specification] Approx.0Ω 4. Study Guide Is the resistance near the specified value? YES 1) Study Guide Go to "Signal Circuit Inspection" procedure. NO 1) Study Guide Repair open in harness, Go to "Verification of Vehicle Repair" procedure. Study Guide Signal Circuit Inspection Check for Open in Harness 1. Study Guide IG KEY : OFF , Engine : OFF 2. Study Guide Disconnect CMPS connectorC05 and ECM connector. 3. Study Guide Measure resistance between terminal 2 of the CMPS harness Study Guide connectorC05 and 16 of the ECM harness connectorC44-2. A. [Specification] Approx.0Ω 4. Study Guide Is the resistance near the specified value? YES 1) Study Guide Go to "Check for Short to Ground in Harness" NO 1) Study Guide Repair open in harness, Go to "Verification of Vehicle Repair" procedure. Check for Short to Ground in Harness 1. Study Guide IG KEY : OFF , Engine : OFF 2. Study Guide Disconnect CMPS connectorC05 3. Study Guide Measure resistance between terminal 2 of the CMPS harness connectorC05 and chassis ground. A. [Specification] infinite(∞Ω) 4. Study Guide Does the resistance indicate open? YES 1) Study Guide Go to "Check for Short to Battery in Harness" NO 1) Study Guide Repair short to chassis ground in harness, Go to "Verification of Vehicle Repair" procedure. Check for Short to Battery in Harness 1. Study Guide IG KEY : OFF , Engine : OFF 2. Study Guide Disconnect CMPS connectorC05. 3. Study Guide IG KEY : ON , Engine : OFF 4. Study Guide Measure voltage between terminal 2 of the CMPS harness connectorC05 and chassis ground. A. [Specification] Approx.0V 5. Study Guide Is the voltage near the specified value? YES 1) Study Guide Go to "Component Inspection" procedure. NO 1) Study Guide Repair short to battery in harness, Go to "Verification of Vehicle Repair" procedure. more info Study Guide and Auto Repair and Study Guide and Auto Repair

How to Repair Sometimes Coupe not Crank

How to Repair Sometimes Coupe not Start

Model: Hyundai Coupe BK

Year Model: 2010

Fuel: Gasoline

Displacement: 3800cc

How to Repair Sometimes Coupe not Start

Study Condition:

1. Intermittent engine not cracking after an hour of parking.
2. Sometimes only the pre start will function for engine start.

Study Cause:

1. Due to PDM ( Power Distribution Module) intermittent malfunctioning.

Study Diagnosis :

1. Study Scan tool check
   =  The trouble was regarding on immobilizer.
2. Study Confirm the problem start the engine to test until the problem appear(OK confirm) but still the trouble for the second time will not registered and can not show to the GDS( Diagnostic Trouble System).
3. Study Now the was confirm and the engine will not start.
   = Check for the power from the starter relay. Fail No power.
   = At the same time no trouble code, Check for the power of Button Start and Smart Key System from the fuse to button switch OK.
   = Check the power supply from Button Start and Smart Key System to the PDM.OK
   = Check the PDM power to the main relay for starting system. Fail No power.

Study Guide and Replace parts

1. Replace PDM assembly.
2. more and more case for  you  to have a tips on Hyundai   trouble shooting

Study Guide , Auto Repair , Study Guide , Auto Repair , Study Guide , Auto Repair

How to Check 2010 1.6 DOHC Hyundai Elantra

P0712 Transaxle Fluid Temperature Sensor Circuit Low Circuit

Study Guide Component Inspection Check "TRANSAXLE FLUID TEMPERATURE SENSOR" 1. Study Ignition "OFF" . 2. Study Disconnect the "TRANSAXLE FLUID TEMPERATURE SENSOR" connector 3. Study Measure the resistance between terminals "5" and "6" of the "TRANSAXLE FLUID TEMPERATURE SENSOR". A. Study the Specification : Refer to " Reference data" TEMP.(°C) RESISTANCE(kΩ) TEMP.(°C) RESISTANCE(kΩ) -40(-40°F) 139.5 80(176°F) 1.08 -20(-4°F) 47.7 100(212°F) 0.63 0(32°F) 18.6 120(248°F) 0.38 20(68°F) 8.1 140(284°F) 0.25 40(104°F) 3.8 160(320°F) 0.16 60(140°F) 1.98 Study , Study , Study , Study , Study , Study , Study , Study , Study 4. Study Is resistance within specifications or w/in Study? YES 1) Go to "CHECK PCM/TCM " as below NO 1) Study Guide Replace "TRANSAXLE FLUID TEMPERATURE SENSOR" as necessary and Go to "Verification Vehicle Repair"Study procedure. Study Guide , Study Guide , Study Guide , Study Guide , Study Guide Check TCM 1. Study Ignition "ON" & Engine "OFF". 2. Study Connect "TRANSAXLE FLUID TEMPERATURE SENSOR" connector. 3. Study Install scantool and slect a SIMU-SCAN, 4. Study Simulate voltage (0→5V) to "TRANSMISSION FLUID TEMPERATURE SENSOR" signal circuit. 5. Study Is FLUID TEMP. SENSOR signal value changed according to simulation voltage? YES 1) Study Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure. NO 1) Study Substitute with a known-good PCM/TCM and check for proper operation. If the problem is corrected, replace PCM/TCM as necessary and go to "Verification of Vehicle Repair" procedure. Study Guide and Auto Repair and Study Guide and Auto Repair and Study   more Study Guide and Auto Repair

How Hyundai EQUUS Code P0017 Works?

P0017 Crankshaft Position – Camshaft Position Correlation (Bank 1 Sensor B)

Study Guide

Auto Repair

Component Location w/ Auto Repair and Study Guide Auto Repair and Study Guide General Description Auto Repair A Crankshaft Position Sensor (CKPS) is a magnetic type sensor that generates voltage using a sensor and a target wheel mounted on the crankshaft.Study Guide The PCM calculates engine RPM by using the sensor’s signal and controls the injection duration and the ignition timing. Camshaft Position Sensor (CMPS) is a hall sensor and detects the camshaft position by using a hall element. It is related to Study with Crankshaft Position Sensor (CKPS) and detects the piston position of the each cylinder which the CKPS can’t detect. This CMPS signal is sent to the PCM and it uses CMPS signals for determining the ignition timing with CKPS signals. CMPS makes Sequential Injection possible. Auto Repair w/ DTC Description If the deviation between CKPS and CMPS(EX-CMPS Bank 1) is bigger than the threshold value, ECM sets DTC P0017. Study Guide w/ DTC Detecting Condition Item Detecting Condition Possible Cause Case1 Study Guide DTC Strategy • Camshaft install diagnosis • Poor connection • Contamination of Oil / Clog of Oil path • CKPS, CMPS • OCV • CVVT Enable Conditions Study Guide • First firing detected after ECM installed or ‘Camshaft install fault exist • Adapted CMP - CMP < 2 Deg Threshold Value Study Guide • | Adapted CMP – Set value |> 7 Deg Case2 Study Guide DTC Strategy • Camshaft and crankshaft alignment check Enable Conditions Study Guide • Adapted CMP - CMP < 2 Deg • Engine speed < 1500rpm • Engine load < 50% • ECT > 60C Threshold Value Study Guide • | Adapted CMP – Set value – Adaped CMP during install diagnosis | > 13 Deg Diagnostic Time Study Guide • 6 camshaft rotations MIL On Condition Study Guide • 2 driving cycle More Study Guide and Auto Repair for the engine and transmission

How to Repair Engine RPM up and Down

How to Repair Engine RPM up and Down

Model: Hyundai Sonata

Year Model: 2002

Displacement: 2000cc

Condition:

1. Engine RPM up and Down.
2. Engine Cut Off Especially when Getting Engine Hot.

Cause:

1. Due to CKP sensor wire open.
   = CKP wire covered only with Electrical tape and this the cause of resistance that affect the CKP sensor.

Diagnosis

1. Scan tool Check
   =Study P0010 CMP Sensor.
2. Check the Electrical circuit of CMP
   =Study OK
3. Check the Fuel Pressure
   = Study OK.
4. Check  The CPK by disconnecting the female &male Socket.
5. Check the electrical circuit for loose connection =Study
6. Check for the engine timing cause CMP trouble code intermittently registered to the GDS or G-Scan.Study Ok
7. Finally Open the Front Engine and check visually the CKP
   =Study CKP wire covered only with Electrical tape and this the cause of resistance that affect the CKP sensor.

Study Guide and Replace Parts

1. Replace Crankshaft Position Sensor. 

Study Guide , Study Guide , Study Guide , Study Guide , Study Guide

How to Check Timing on Code P0011 Hyundai EQUUS

How tp Check Timing on Code P0011 Hyundai EQUUS

 

2011  G 4.6 DOHC   Engine Control  P0011 \'A\' Camshaft Position-Timing Over-Advanced or System Performance (Bank 1)

Study Monitor GDS Data 1. Study Connect GDS to DLC(Data Link Cable). 2. Study Warm up the engine to normal operating temperature. 3. Study Monitor "CVVT" parameter on GDS. Study the  Normal data of CVVT at idle. 4. Are the parameters displayed correctly ? ▶ Fault is intermittent caused by poor contact in the sensor’s and/or ECM’s connector or was repaired and ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of vehicle Repair" procedure. ▶ Go to "System Inspection" procedure.

Study Guide System Inspection

■ Visual Inspection

1.	Study Check oil level is O.K.

2.	Study Check oil and OCV is contaminated.

3.	Study Check that any oil leakage is occurred around OCV.

4.	Study a problem been found ? ▶ Repair or replace as necessary and then, go to " Verification of Vehicle Repair" procedure. ▶ Go to "Component Inspection" procedure.
		P0011

Study Guide Component Inspection ■ Check OCV resistance 1. IG "OFF" and disconnect OCV connector. 2. Measure resistance between power and signal terminals of OCV. (Component Side) Specification : 6.7 ~ 7.7 Ω 3. Is the measured resistance within specification? ▶ Go to "Check OCV -Oil Control Valve & Cam phaser" as follows. ▶ Substitute with a known - good OCV and check for proper operation. If the problem is corrected, replace OCV and go to "Verification of Vehicle Repair" procedure. ■ Check OCV -Oil Control Valve & Cam phaser 1. IG "OFF" and connect GDS. 2. ENG "ON" and Measure signal waveform at signal terminal of OCV -Oil Control Valve. 3. Measure signal waveform at signal terminal of Cam phaser. 4. Check the signal waveforms with stepping on accelerator pedal. Specification : Refer to Signal Waveform & Data Study Guide and Auto Repair 5. Is the measured signal waveform O.K ? ▶ Fault is intermittent. Drive the vehicle to meet the enable condition for the DTC. and Go to "Verification of Vehicle Repair" procedure. ▶ Substitute with a known - good CVVT or OCV and check for proper operation. If the problem is corrected, replace CVVT or OCV and go to "Verification of Vehicle Repair" procedure. MMore Description and Auto Repair

How to Check and What is Code P0014 Genesis

2011  G 4.6 DOHC  Engine  Engine Control  P0014 \'B\' Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)

Component Location General Description Study Guide for The CVVT (Continuously Variable Valve Timing) system is installed to the chain sprocket of the intake camshaft. This system controls the intake camshaft to provide the optimal valve timing for every driving condition. The ECM controls the Oil Control Valve(OCV), based on the signals output from mass air flow, throttle position and engine coolant temperature.Study Guide The CVVT controller regulates the intake camshaft angle using oil pressure through the OCV. As result,Study the relative position between the camshaft and the crankshaft becomes optimal, and the engine torque improves, fuel economy improves, exhaust emissions decrease under overall driving conditions. Study Guide DTC Description If there is a delay between the target angle and the real angle over 5 times,ECM sets DTC P0014. DTC Detecting Condition Study the Item Detecting Condition Possible Cause Study Guide DTC Strategy • Slow response check • Poor connection • Contamination of Oil / Clog of Oil path • OCV • CVVT Study Guide Enable Conditions • Time after | target VVT angle –VVT angle | > 6 deg(2 sec) • Time after engine start > 10 ~ 60 sec • Coolant temperature : 0~120°C • Engine oil temperature : 0~130°C • 1000  rpm  6600rpm Study Guide Threshold value • Counter of delayed following target valve timing > 5 times Diagnosis Time • - MIL On Condition • 2 Driving Cycles Specification OCV Specification Coil Resistance (Ω) 6.7 ~ 7.7 (20°C) More Diagnosis Procedure Study , Study , Study , Study , Study , Study , Study , Study , Study ,

How to repair A/T overdrive not working

How to repair A/T overdrive not working of Hyundai Trajet

Model: Hyundai Trajet

Year Model: 2004

Displacement:2700cc

Fuel: Gasoline

1) Study Condition

1. Automatic Transmission Overdrive switch not working

2) Study the Cause

1. This problem cause of electrical circuit from overdrive switch disconnected.

3) Study and Diagnosis

1. Study and Check with GDS
   = No Trouble Found
2. Study and Check fuse from overdrive circuit = OK
3. Study and Open the Steering column were the shifting lever mounted.
4. Study and Check for the wire of overdrive switch and disconnet.
5. Study and Check the B+
   = no current flows
   = Check for the socket pin, the problem found from the socket only the cover of wire connected to the socket.

4) Study Guide and Repair Procedure

• Repair The disconnected parts

more training and trouble shooting

Study , Study , Study , Study , Study , Study , Study , Study , Study , Study.

How to check output speed sensor code P0722

How to check output speed sensor code P0722

 

P0722 A/T Output speed Sensor Circuit - Open or Short(GND)

Study Guide

Auto Repair

Study Guide and Component Location Study Guide and General Description Study Guide and The Output Speed Sensor outputs pulse-signals according to the revolutions of the output shaft of the transmission. Study Guide and  The Output Speed Sensor is installed in front of the Transfer Drive Gear to determine the Transfer Drive Gear rpms by counting the frequency of the pulses.Study This value, together with the throttle position data, is mainly used to decide the optimum gear position. Study Guide and DTC Description Study The TCM sets this code if the calculated value of the pulse-signal is noticeably different from the value calculated, using the Vehicle Speed Sensor output, when Study the vehicle is running faster than 30 km/h. The TCM will initiate the fail safe function if this code is detected. Study Guide and DTC Detecting Condition Item to Study Detecting Condition and Study Study Possible Cause DTC Strategy ● Speed rationality check ● Signal circuit is open or short. ● Sensor power circuit is open ● Sensor ground circuit is open ● Faulty OUPUT SPEED SENSOR ● Faulty PCM Enable Conditions ● Battery Voltage ≥ 10V ● Lever position : D,3,2,L ● State of brake : OFF Threshold Value ● Output speed = 0 Diagnostic Time ● More than 1sec Fail Safe ● Locked into 3rd or 2nd gear. ● Manual shifting is possibe(2 nd → 3 rd ,3 rd → 2 nd) more cases and  information Study and Study and Study and Study and Study and Study and Study and Study

How input sensor works? code P0717

How input sensor works?code P0717

Model: Hyundai Elantra

Year Model: 2010

Fuel: Gasoline

Displacement: 1600cc

 

Transmission  Automatic Transaxle  P0717 A/T Input speed Sensor Circuit Low Input

Study Guide and Component Location Study Guide and General Description The Study Guide input(turbine) speed sensor outputs waveform signals according to the revolutions of the input shaft ,installed in front of End clutch retainer,of the transmission. The Study Guide TCM determines the input shaft speed by calculating the frequency of the pulses. This Study Guide value is mainly used to control the optimum fluid pressure during shifting. Study Guide and DTC Description The Study Guide PCM/TCM sets this code if an output pulse-signal is not detected, from the input speed sensor, when the vehicle is running faster than 30 km/h. The Study Guide Fail-Safe function will be set by the PCM/TCM if this code is detected. DTC Detecting Condition Item Study Guide Detecting Condition Study Guide Possible Cause Study Guide Study Guide and DTC Strategy ● Speed rationality check ● Signal circuit is open or short. ● Sensor power circuit is open ● Sensor ground circuit is open ● Faulty INPUT SPEED SENSOR ● Faulty PCM/TCM Study Guide Enable Conditions ● Battery Voltage ≥ 10V ● Output speed ≥ 1000rpm ● Engine speed(Only current gear is the 1st gear) ≥ 3000rpm ● Lever position : D,3,2,L Study Guide and Threshold Value ● Input speed = 0 Study Guide and Diagnostic Time ● More than 1sec Fail Safe ● Locked into 3rd or 2nd gear. ● Manual shifting is possibe(2 nd → 3 rd ,3 rd → 2 nd) Study Guide and Specification Input shaft & Output shaft speed sensor ● Type : Hall sensor ● Current consumption : 22mA(MAX) ● sensor body and sensor connector have been unified as one. Study Guide and Schematic Diagram Study Guide and Signal Waveform

more case and study guide

How to Repair Genesis BK Engine Not Starting

How to Repair Genesis BK Engine Not Starting(Full Option)

Model: Genesis(BK)

Year Model: 2010

Fuel: Gasoline

Displacement: 3800cc

A).Study Guide and Auto Repair Condition

1. Engine Not Cranking
   = This a Trouble from Coupe BK that first time encounter, that’s why it is not easy for me to identify where is the trouble occurs but i have a confident that i deed it by the guide of God by using electronic gadget ex.GDS, Scan Tool.

B).Study Guide and Trouble Cause

1. This trouble occurs due to poor contact of Starter relay pin.

C). Study Guide and Trouble Diagnosis

1. Scan tool Check w/ GDS and G-Scan
   =No Trouble found from engine and Transmission.
2. Check for the Key indicator from control panel = OK
3. Check for the light indicator of FOB button switch = OK
4. Check for the fuse of starting system = OK
5. Pull out the starter relay and Check the Positive terminal and Ground terminal = OK
6. Tightened the relay pin then test to start = It works the engine start

D). Auto Repair or Repair Parts

• Check and repair for loose contact from Engine Control Box.
• more case & Study Guide 

Study Guide , Auto Repair , Study Guide , Auto Repair , Study Guide , Auto Repair

How to check code P0011 of Hyundai Equus VI of Chile

How to check code P0011 of Hyundai Equus VI of chile

Model : Hyundai Equus

Year model: 2010

Fuel: Gasoline

Displacement: 4600cc

 

P0011  Camshaft Position-Timing Over-Advanced or System Performance (Bank 1)

Study Guide

Auto Repair

Study Guide and Component Location 2011  G 4.6 DOHC  Engine  Engine Control Auto Repair and Study Guide w/ General Description Study Guide The CVVT (Continuously Variable Valve Timing) system is installed to the chain sprocket of the intake camshaft. Study Guide This system controls the intake camshaft to provide the optimal valve timing for every driving condition. The ECM controls the Oil Control Valve(OCV), based on the signals output from mass air flow, throttle position and engine coolant temperature. The CVVT controller regulates the intake camshaft angle using oil pressure through the OCV. As result, the relative position between the camshaft and the crankshaft becomes optimal, and the engine torque improves, fuel economy improves, exhaust emissions decrease under overall driving conditions. Study Guide and DTC Description If there is a delay between the target angle and the real angle over 5 times,ECM sets DTC P0011. DTC Detecting Condition Study Guide Item Detecting Condition Possible Cause DTC Strategy Study Guide • Slow response check • Poor connection • Contamination of Oil / Clog of Oil path • OCV • CVVT Study Guide Enable Conditions Study Guide • Time after | target VVT angle –VVT angle |  6 deg(2 sec) • Time after engine start  10 ~ 60 sec • Coolant temperature : 0~120°C • Engine oil temperature : 0~130°C • 1000  rpm  6600rpm Threshold value Study Guide • Counter of delayed following target valve timing  5 times Diagnosis Time Study Guide • -Auto Repair and Study Guide MIL On Condition Study Guide • 2 driving cycle Auto Repair and Study Guide w/ Specification OCV Specification Coil Resistance (Ω) 6.7 ~ 7.7 (20°C) Diagnostic Circuit Diagram Signal Waveform & Data Study Guide , Auto Repair , Study Guide , Auto Repair , Study Guide , Auto reapir Fig.1) Normal waveform of OCV & IN-CMPS at idle. Fig.2) Normal waveform of OCV & IN-CMPS at acceleration with load. Study Guide , Auto Repair , Study Guide , Auto Repair , Study Guide , Auto Repair