DTC P0013 Camshaft Position "B" Actuator Circuit / Open (Bank 1)
DTC P0023 Camshaft Position "B" Actuator Circuit / Open (Bank 2)
DESCRIPTION
The Variable Valve Timing (VVT) system includes the ECM, OCV and 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. Camshaft timing control is performed according to engine operating conditions such as the intake air volume, throttle valve position and engine coolant temperature. The ECM controls the OCV, based on the signals transmitted by several sensors. The VVT controller regulates the exhaust camshaft angle using oil pressure through the OCV. As a result, the relative positions of the camshaft and crankshaft are optimized, the engine torque and fuel economy improve, and the exhaust emissions decrease under overall driving conditions. The ECM detects the actual exhaust valve timing using signals from the camshaft and crankshaft position sensors, and performs feedback control. This is how the target intake valve timing is verified by the ECM
DTC No. |
DTC Detection Condition |
Trouble Area |
P0013 | Open or short in OCV for exhaust camshaft (bank 1) circuit (1 trip detection logic) |
|
P0023 | Open or short in OCV for exhaust camshaft (bank 2) circuit (1 trip detection logic) |
|
MONITOR DESCRIPTION
The ECM optimizes the valve timing using the VVT system to control the exhaust camshaft. The VVT system includes the ECM, the 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 exhaust camshaft.
After the ECM sends the target duty-cycle signal to the OCV, the ECM monitors the OCV current to establish an actual duty-cycle. The ECM determines the existence of a malfunction and sets the DTC when the actual duty-cycle ratio varies from the target duty-cycle ratio.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
COMPONENT OPERATING RANGE
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER (OPERATE OCV)
OK
CHECK FOR INTERMITTENT PROBLEMS
2 INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
Standard resistance
REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
3 CHECK HARNESS AND CONNECTOR (OCV - ECM)
Standard resistance (Check for open)
Standard resistance (Check for short)
REPLACE ECM
Terminals of ECU
1. CHECK TRANSPONDER KEY AMPLIFIER
Disconnect the I14 amplifier connector and measure
the resistance between the terminal of the wire
harness side connector and body ground.
If the result is not as specified, there may be a
malfunction on the wire harness side.
Reconnec ...
Installation
1. INSTALL TRANSMISSION WIRE
(a) Coat the O-ring of the transmission wire connector
with ATF and install it.
(b) Install the transmission wire with the bolt.
Torque: 5.4 N*m (55 kgf*cm, 48 ft.*lbf)
2. CONNECT TRANSMISSION WIRE
(a) Coat the O-ring of the ATF temperature sensor with
...
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