Lexus IS250 IS220d GSE20 ALE20 4GR-FSE ENGINE CONTROL SYSTEM
CHECK VALVE TIMING (CHECK FOR LOOSE AND A JUMPED TOOTH OF TIMING CHAIN)
DTC P0016 Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)
DTC P0017 Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B)
DTC P0018 Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor A)
DTC P0019 Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor B)
DESCRIPTION
In the VVT 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 oil control valve, and operating the camshaft timing gear; and 2) changing the relative positions of the gaps between the camshaft and crankshaft
| DTC No. | DTC Detection Condition | Trouble Area |
| P0016 | Deviation in crankshaft position sensor signal and VVT sensor 1 (for intake camshaft (bank 1)) signal (2 trip detection logic) | Mechanical system (Timing chain has jumped tooth or chain stretched) ECM |
| P0017 | Deviation in crankshaft position sensor signal and VVT sensor 1 (for exhaust camshaft (bank 1)) signal (2 trip detection logic) | Mechanical system (Timing chain has jumped tooth or chain stretched) ECM |
| P0018 | Deviation in crankshaft position sensor signal and VVT sensor 2 (for intake camshaft (bank 2)) signal (2 trip detection logic) | Mechanical system (Timing chain has jumped tooth or chain stretched) ECM |
| P0019 | Deviation in crankshaft position sensor signal and VVT sensor 2 (for exhaust camshaft (bank 2)) signal (2 trip detection logic) | Mechanical system (Timing chain has jumped tooth or chain stretched) ECM |
WIRING DIAGRAM
INSPECTION PROCEDURE
- HINT:
- Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions 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 .
| 1.CHECK VALVE TIMING (CHECK FOR LOOSE AND A JUMPED TOOTH OF TIMING CHAIN) |
Remove the cylinder head covers RH and LH.
Turn the crankshaft pulley, and align its groove with the timing mark "0" of the timing chain cover.
Check that the timing marks of the camshaft timing gears are aligned with the timing marks of the bearing cap as shown in the illustration.
- OK:
- Timing marks on camshaft timing gears are aligned as shown in the illustration.
Reinstall the cylinder head covers.
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| OK | ||
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