P0018
FA20 ENGINE CONTROL: SFI SYSTEM: P0016-P0019; Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A); 2013 MY FR-S [03/2012 -]
P0016 - Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)
P0017 - Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B)
P0018 - Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor A)
P0019 - Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor B)
DESCRIPTION
In the VVT (Variable Valve Timing) system, the appropriate intake and exhaust valve open and close timing is controlled by the ECM. The ECM performs intake and exhaust valve control by performing the following: 1) controlling the camshaft and camshaft timing oil control valve, and operating the camshaft timing gear: and 2) changing the relative positions of the camshaft and crankshaft.
MONITOR DESCRIPTION
To monitor the correlation of the intake camshaft position and crankshaft position, the ECM checks the VVT learned value while the engine is idling. The VVT learned value is calibrated based on the camshaft position and crankshaft position. If the VVT learned value is out of the specified range in consecutive driving cycles, the ECM illuminates the MIL and stores DTC P0016 (bank 1) or P0018 (bank 2).
To monitor the correlation of the exhaust camshaft position and crankshaft position, the ECM checks the VVT learned value while the engine is idling. The VVT learned value is calibrated based on the camshaft position and crankshaft position. If the VVT learned value is out of the specified range in consecutive driving cycles, the ECM illuminates the MIL and stores DTC P0017 (bank 1) or P0019 (bank 2).
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
All
P0016, P0018
P0017, P0019
TYPICAL MALFUNCTION THRESHOLDS
P0016, P0018 (One tooth misalignment)
P0016, P0018 (Two teeth misalignment)
P0017, P0019 (One tooth misalignment)
P0017, P0019 (Two teeth misalignment)
CONFIRMATION DRIVING PATTERN
1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear DTCs (even if no DTCs are stored, perform the clear DTC operation) Reading and Clearing Diagnostic Trouble Codes.
4. Turn the ignition switch off and wait for at least 30 seconds.
5. Turn the ignition switch to ON and turn the Techstream on.
6. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher.
7. With the vehicle stationary, depress the accelerator pedal and maintain an engine speed of between 2500 and 3000 rpm for 40 seconds or more [A].
8. Drive the vehicle at 10 km/h (6.25 mph) or more for 1 minute or more [B].
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
9. Enter the following menus: Powertrain / Engine / Trouble Codes.
10. Read pending DTCs.
HINT
* If a pending DTC is output, the system is malfunctioning.
* If a pending DTC is not output, perform the following procedure.
11. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
12. Input the DTC: P0016, P0017, P0018 or P0019.
13. Check the DTC judgment result.
HINT
* If the judgment result shows NORMAL, the system is normal.
* If the judgment result shows ABNORMAL, the system has a malfunction.
14. If the test result is INCOMPLETE or N/A and no DTC is output, perform a universal trip and check for permanent DTCs Reading and Clearing Diagnostic Trouble Codes.
HINT
* If a permanent DTC is output, the system is malfunctioning.
* If no permanent DTC is output, the system is normal.
WIRING DIAGRAM
Refer to DTC P0010 for the camshaft timing oil control valve (for intake camshaft) circuit P0010.
Refer to DTC P0013 for the camshaft timing oil control valve (for exhaust camshaft) circuit P0013.
INSPECTION PROCEDURE
HINT
* If DTC P0016 or P0017 is displayed, check the intake camshaft circuit for the right bank VVT system (bank 1).
* If DTC P0018 or P0019 is displayed, check the intake camshaft circuit for the left bank VVT system (bank 2).
* Bank 1 refers to the bank that includes the No. 1 cylinder*.
*: The No. 1 cylinder is the cylinder which is farthest from transmission.
* Bank 2 refers to the bank that does not include the No. 1 cylinder.
* Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
PROCEDURE
1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0016, P0017, P0018 OR P0019)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Trouble Codes.
(e) Read DTCs.
Result
HINT
If any DTCs other than P0016, P0017, P0018 or P0019 are output, troubleshoot those DTCs first.
B -- GO TO DTC CHART SFI System
A -- Continue to next step.
2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE)
HINT
If the VVT system can be operated through the Active Test, it can be assumed that the VVT system is operating normally.
(a) Connect the Techstream to the DLC3.
(b) Start the engine.
(c) Turn the A/C on.
(d) Turn the Techstream on.
(e) Warm up the engine.
(f) Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Linear (Bank 1) or Control the VVT Exhaust Linear (Bank 1) / VVT Change Angle #1, VVT Ex Chg Angle #1, VVT Change Angle #2, VVT Ex Chg Angle #2.
(g) Perform the Active Test. Check that the displacement angle varies.
OK:
Displacement angle varies.
NG -- INSPECT CAMSHAFT TIMING OIL CONTROL VALVE (FOR INTAKE OR EXHAUST CAMSHAFT)
OK -- Continue to next step.
3. CHECK VALVE TIMING
(a) Check the valve timing Removal.
Result
B -- CHECK WHETHER DTC OUTPUT RECURS (DTC P0016, P0017, P0018 OR P0019)
A -- ADJUST VALVE TIMING Installation
4. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE (FOR INTAKE OR EXHAUST CAMSHAFT)
(a) Inspect the camshaft timing oil control valve (for intake or exhaust camshaft) Inspection.
NG -- REPLACE CAMSHAFT TIMING OIL CONTROL VALVE (FOR INTAKE OR EXHAUST CAMSHAFT) Removal
OK -- Continue to next step.
5. INSPECT OIL CONTROL VALVE FILTER AND OIL PIPE
(a) Check that the oil control valve filter and oil pipe are not clogged.
OK:
The oil control valve filter and oil pipe are not clogged.
NG -- CLEAN OR REPLACE OIL CONTROL VALVE FILTER AND OIL PIPE
OK -- Continue to next step.
6. INSPECT CAMSHAFT TIMING GEAR ASSEMBLY (FOR INTAKE OR EXHAUST CAMSHAFT)
(a) Inspect the camshaft timing gear assembly (for intake camshaft or exhaust camshaft) Engine Unit.
NG -- REPLACE CAMSHAFT TIMING GEAR ASSEMBLY (INTAKE OR EXHAUST CAMSHAFT) Removal
OK -- Continue to next step.
7. CLEAN LUBRICATION SYSTEM
(a) Replace the engine oil Replacement.
(b) Warm up the engine for 5 minutes, and then stop the engine.
(c) Replace the engine oil and filter Replacement.
NEXT -- Continue to next step.
8. CHECK WHETHER DTC OUTPUT RECURS (DTC P0016, P0017, P0018 OR P0019)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Turn the ignition switch to ON.
(g) Turn the Techstream on.
(h) Start the engine and warm it up.
(i) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
(j) Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.
(k) Read pending DTCs.
Result
B -- REPLACE ECM Removal
A -- END