PROCEDURE ).
f. Drive the vehicle for more than 10 minutes.
g. Read output DTCs using the Techstream.
OK: No DTC output.
HINT:
DTC P0011, P0012, P0021 or P0022 is output when foreign objects in engine oil are caught in
some parts of the system. These codes will stay registered 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 (See REMOVAL )
OK : SYSTEM OK
DTC P0016 CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION (BANK 1
SENSOR A); DTC P0018 CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION
(BANK 2 SENSOR A)
DESCRIPTION
Refer to DTC P0335 .
DTC TROUBLE DETECTION CONDITION CHART
MONITOR DESCRIPTION
The ECM optimizes the valve timing by using the VVT (Variable Valve Timing) system to control the intake
camshaft. The VVT system includes the ECM, the Oil Control Valve (OCV) and the VVT controller. The ECM
sends a target duty-cycle control signal to the OCV. This control signal regulates the oil pressure supplied to the
VVT controller. The VVT controller can advance or retard the intake camshaft. The ECM calibrates the intake
valve timing by setting the intake camshaft to the most retarded angle while the engine is idling. The ECM
closes the OCV to retard the cam. The ECM stores this value as the VVT learning value. When the difference
between the target and actual intake valve timings is 5°CA (Crankshaft Angle) or less, the ECM stores it.
If the VVT learning value matches the following conditions, the ECM determines the existence of a
malfunction in the VVT system, and sets the DTC.
DTC
No.
DTC Detection Condition
Trouble Area
P0016
Deviations in crankshaft and camshaft position
sensor 1 signals (2 trip detection logic)
Mechanical system (Timing chain has
jumped tooth or chain stretched)
Oil control valve (OCV)
Camshaft timing gear assembly
ECM
P0018
Deviations in crankshaft and camshaft position
sensor 2 signals (2 trip detection logic)
2008 Toyota Tundra
2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra