P0019
1GR-FE ENGINE CONTROL: SFI SYSTEM: P0017, P0019: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B)
DESCRIPTION
Refer to DTC P0335 SFI System.
MONITOR DESCRIPTION
The ECM checks valve timing (VVT learned value) on the exhaust side while the engine is running at a low speed in order to monitor the gap between the current and target valve timing on the exhaust side. The VVT learned value is calculated from the positions of the camshaft and crankshaft. The camshaft will come to the most retarded position when the engine is running at a low speed. If the camshaft position is normal, the VVT learned value should be within the specified range. If the VVT learned value is not within the specified range, the ECM determines this to be a malfunction.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
All
TYPICAL MALFUNCTION THRESHOLDS
CONFIRMATION DRIVING PATTERN
1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation).
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 [A].
6. Start the engine and warm it up until the ECT reaches 75°C (167°F) or higher [B].
7. Idle the engine for 5 minutes or more [C].
8. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [D].
9. Read the pending DTCs.
HINT
* If a pending DTC is output, the system is malfunctioning.
* If a pending DTC is not output, perform the following procedure.
10. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
11. Input the DTC: P0017 or P0019.
12. 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.
* If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [E] through [G].
13. Drive the vehicle for 2 to 3 minutes [E].
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
14. Idle the engine for 5 minutes or more [F].
15. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [G].
16. Read the pending DTCs.
HINT
* If a pending DTC is output, the system is malfunctioning.
* If a pending DTC is not output, perform the following procedure.
17. Check the DTC judgment result.
18. If the test result is INCOMPLETE or UNKNOWN and no pending 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 P0335 SFI System.
INSPECTION PROCEDURE
HINT
Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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 FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0017 AND P0019)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON and turn the Techstream on.
(c) Enter the following menus: Powertrain / Engine and ECT / Trouble Code.
(d) Read the DTCs.
Result
HINT
If any DTCs other than P0017 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 ASSEMBLY FOR EXHAUST CAMSHAFT)
(a) Connect the Techstream to the DLC3.
(b) Start the engine and turn the Techstream on.
(c) Turn the A/C switch on.
(d) Warm up the engine.
(e) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Exhaust Linear (Bank 1) or Control the VVT Exhaust Linear (Bank 2).
(f) Check the engine speed while operating the camshaft timing oil control valve using the Techstream.
OK:
HINT
Refer to "Data List / Active Test" [VVT OCV Duty #1, VVT Change Angle #1] Data List / Active List.
NG -- CHECK VALVE TIMING (CHECK FOR LOOSE TEETH AND WHETHER TIMING CHAIN HAS JUMPED TOOTH)
OK -- Continue to next step.
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0017 OR P0019)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON and turn the Techstream on.
(c) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(d) Start the engine and warm it up.
(e) Switch the ECM from normal mode to check mode using the Techstream Check Mode Procedure.
(f) Drive the vehicle for more than 10 minutes.
(g) Read the DTCs using the Techstream.
OK:
No DTC output.
NG -- CHECK VALVE TIMING (CHECK FOR LOOSE TEETH AND WHETHER TIMING CHAIN HAS JUMPED TOOTH)
OK -- END
4. CHECK VALVE TIMING (CHECK FOR LOOSE TEETH AND WHETHER TIMING CHAIN HAS JUMPED TOOTH)
(a) Remove the cylinder head cover RH and LH.
Text in Illustration
(b) Turn the crankshaft pulley and align its groove with the "0" timing mark on the timing chain cover.
(c) Check that the timing marks on the camshaft timing gears are aligned with the timing marks of the bearing cap as shown in the illustration.
If not, turn the crankshaft 1 revolution (360°), and then align the marks as above.
OK:
Timing marks on camshaft timing gears are aligned as shown in the illustration.
(d) Reinstall the cylinder head cover RH and LH.
NG -- ADJUST VALVE TIMING Reassembly
OK -- Continue to next step.
5. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT)
(a) Inspect the camshaft timing oil control valve Removal.
NG -- REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Removal
OK -- Continue to next step.
6. CHECK OIL CONTROL VALVE FILTER AND PIPE
(a) Remove the oil pipe No. 1 or No. 2.
Text in Illustration
(b) Remove the oil control valve filter.
(c) Check that the filter and pipe are not clogged.
OK:
The filter and pipe are not clogged.
(d) Reinstall the oil control valve filter.
(e) Reinstall the oil pipe No. 1 or No. 2.
NG -- REPLACE OIL CONTROL VALVE FILTER OR PIPE
OK -- Continue to next step.
7. REPLACE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY
(a) Replace the camshaft timing exhaust gear assembly Removal.
NEXT -- Continue to next step.
8. CHECK WHETHER DTC OUTPUT RECURS
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON and turn the Techstream on.
(c) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(d) Start the engine and warm it up.
(e) Switch the ECM from normal mode to check mode using the Techstream Check Mode Procedure.
(f) Drive the vehicle for more than 10 minutes.
(g) Confirm that no DTC is output using the Techstream.
OK:
No DTC output.
HINT
DTC P0017 or P0019 is stored when foreign objects in the engine oil are caught in some parts of the system. These codes will remain stored even if the system returns to normal after a short time. These foreign objects are then captured by the oil filter, thus eliminating the source of the problem.
NG -- REPLACE ECM Removal
OK -- END