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Home >> Kia >> 2006 >> Optima L4-2.4L VIN 3 >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> P Code Charts >> P0016

P0016

DTC P0016 CRANKSHAFT POSITION-CAMSHAFT POSITION CORRELATION (BANK 1 SENSOR A)

Component Location:






GENERAL DESCRIPTION
The CVVT (Continuously Variable Valve Timing) system is installed to the chain sprocket of the exhaust camshaft. There is no variation in valve timing of the exhaust cam because the exhaust camshaft is driven by the timing belt. The timing of the intake cam is varied by the relative operation the CVVT vane to the housing. The CVVT controller regulates the intake camshaft angle using oil pressure through the OCV (Oil Control Valve). As result, the relative position between the camshaft and the crankshaft becomes optimal, and the engine torque improves, fuel economy improves, exhaust emissions decrease by changing the valve open/close timing of the intake camshaft.

DTC DESCRIPTION
This diagnostic checks the camshaft position plausibility whether the expected range plus some margin is not violated that might be caused by a wrong engine repair, or a chain/belt misalignment. DTC P00166 is set when actual camshaft position is too much retarded or advanced than full retard position or full advance position. To continue the adjustment in such case could lead to a damage of the engine by hitting the valves with the piston.

DTC Detecting Condition:






Signal Waveform:






MONITOR DTC STATUS
1. Connect scan tool and select "Diagnostic Trouble Codes (DTCs)" mode.
2. Press F4 (DTAL) to select DTC information from the DTCs menu.
3. Confirm that "DTC Readiness Flag" indicates "Complete". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions.
4. Read "DTC Status" parameter.
5. Is parameter displayed "History (Not Present) fault"?

NOTE
- History (Not Present) fault : DTC occurred but has been cleared.
- Present fault : DTC is occurring at present time.

YES - 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 then go to "Verification of Vehicle Repair" procedure.

NO - Go to next step as blow.

COMPONENT INSPECTION
1. Timing Inspection
1. With ignition "OFF", set up an oscilloscope as follows:
Channel A (+): terminal 2 of the CKPS(back probe), (-): ground
Channel B (+): terminal 2 of the CKPS(back probe), (-): ground




2. Start the engine and check for signal waveform whether synchronize with camshaft sensor or not and tooth is missing refer to sample waveforms

3. Is the signal waveform normal?

YES - Go to next step as below

NO
- Check that the crankshaft and camshaft are correctly aligned the matching marks of the pulleys for the following.
- Alignment of the timing belt
- Alignment of the camshaft timing chain

- Readjust or repair as necessary and go to "Verification of Vehicle Repair" procedure

CHECK OCV AND FILTER

CHECK OPERATION OF OCV
1. Ignition "ON" & Engine "OFF"
2. Install scantool and select "OCV (CVVT) VALVE" in the Actuation Test mode
3. Activates "OCV (CVVT) VALVE" by pressing "STRT (F1)" key (should hear a faint click from Oil Control Valve)
4. Repeat this procedure 4 or 5 times to ensure Oil Control Valve reliability
5. Has a problem been found?

YES - Check OCV for con contamination, deterioration, or damage. Substitute with a known-good OCV and check for proper operation. If the problem is corrected, replace OCV and then go to "Verification of Vehicle Repair" procedure

NO - Go to next step as below

CHECK THE SUSPECTED AREA
1. Oil Control Valve filter for sticking or con contamination
1. Ignition "OFF"
2. Check OCV filter for sticking or con contamination.
3. Remove the OCV and visually check the spool column of OCV for con contamination

2. Engine oil filter and it's level
3. Has a problem been found?

YES - Clean or replace as necessary and then go to "Verification of Vehicle Repair" procedure

NO - Go to next step as below.

CHECK CVVT (CONTINUOUSLY VARIABLE VALVE TIMING) ASSEMBLY
1. Remove the CVVT assembly.
2. Check that the CVVT assembly is locked.




3. The one of the 2 holes on the cam journal is for advances (upper) and the rest is for retards (lower). Apply masking tape to all oil path holes except the one advance hole ("B") indicated by the arrow as shown in the figure.
4. To release the CVVT lock pin, wrap some tape around the tip of an air pressure adapter and apply low air pressure of approx. 150 kPa (l.5 kg/sq.cm, 21 psi) to the exposed camshaft port. Wrap a shop towel or rag around the CVVT because residual oil may leak out of the unit when applying air pressure.




5. With low air pressure applied, turn the CVVT to the ADVANCE direction as indicated in the figure.

NOTE:If too much air leaks when applying the low air pressure, the CVVT lock pin may not release and the CVVT may not turn.

6. Allow the CVVT assembly to move in the ADVANCE and DELAY directions to ensure there is no binding and that it moves freely. (Movable smoothly in the range about 20')
7. Turn the CVVT by hand and make sure it locks in the maximum delay angle position.
8. Is CVVT assembly working properly?

YES - Go to next step as below.

NO - Replace the CVVT assembly and go to "Verification of Vehicle Repair" procedure.

TERMINAL AND CONNECTOR INSPECTION
1. Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, con contamination, deterioration, or damage.
3. Has a problem been found?

YES - Repair as necessary and go to "Verification of Vehicle Repair" procedure.

NO - Check valve timing. Refer to "P0016: Crankshaft Position-Camshaft Position Correlation (Bank 1)" procedure. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

VERIFICATION OF VEHICLE REPAIR
After a repair, it is essential to verify that the fault has been corrected.
1. Connect scan tool and select "Diagnostic Trouble Codes (DTCs)" mode.
2. Press F4 (DTAL) and confirm that "DTC Readiness Flag" indicates "Complete". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions.
3. Read "DTC Status" parameter.
4. Is parameter displayed "History (Not Present) fault"?

YES - System performing to specification at this time. Clear the DTC

NO - Go to the applicable troubleshooting procedure.
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