Toyota Tundra. Manual — part 1510
HINT:
This DTC relates to the Oil Control Valve (OCV).
MONITOR DESCRIPTION
This DTC is designed to detect opens or shorts in the camshaft oil control valve (OCV) circuit. If the OCV's
duty-cycle is excessively high or low while the engine is running, the ECM will illuminate the MIL and set the
DTC.
MONITOR STRATEGY
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
TYPICAL MALFUNCTION THRESHOLDS
trip detection logic)
(for Bank 1)
ECM
P0020
Open or short in OCV for intake
camshaft (for Bank 2) circuit (1
trip detection logic)
Open or short in OCV for
intake camshaft (for Bank 2)
circuit
OCV for intake camshaft
(for Bank 2)
ECM
Related DTCs
P0010: VVT OCV range check (Bank 1)
P0020: VVT OCV range check (Bank 2)
Required Sensors/Components (Main)
VVT OCV
Required Sensors/Components (Related)
-
Frequency of Operation
Continuous
Duration
1 second
MIL Operation
Immediate
Sequence of Operation
None
Monitor runs whenever following DTCs not present
None
All of following conditions met
-
Starter
OFF
Ignition switch
ON
Time after ignition switch off to ON
0.5 seconds or more
One of following conditions met
-
2009 Toyota Tundra
2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra
COMPONENT OPERATING RANGE
COMPONENT OPERATING RANGE
WIRING DIAGRAM
Fig. 37: Camshaft Position - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
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.
1. CHECK DTC
a. Clear DTC after recording the freeze frame data and DTC (see DTC CHECK/CLEAR ).
b. Turn the ignition switch off.
c. Allow the engine to idle and check DTC.
A. All of following conditions met
-
Battery voltage
11 to 13 V
Target duty ratio
Less than 70%
Output signal duty ratio
100%
B. All of following conditions met
-
Battery voltage
13 V or more
Target duty ratio
Less than 80%
Output signal duty ratio
100%
C. Both of following conditions met
-
Current cut status
Not cut
Output signal duty ratio
3% or less
VVT OCV duty ratio
3 to 100%
2009 Toyota Tundra
2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra
d. Check that P0010 or P0020 is not present.
OK: P0010 or P0020 is not present.
NG: Go to step 2
OK: CHECK FOR INTERMITTENT PROBLEMS (See CHECK FOR INTERMITTENT
PROBLEMS )
2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
a. Disconnect the D75 or D76 OCV connector.
Fig. 38: Identifying Terminals Of D75 Or D76 OCV Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Measure the resistance according to the value(s) in the table below.
Standard resistance
RESISTANCE SPECIFIED CONDITION
NG: REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (See
REMOVAL )
OK: Go to next step.
3. CHECK HARNESS AND CONNECTOR (OCV - ECM)
a. Disconnect the D75 or D76 OCV connector.
Tester Connection Condition Specified Condition
1 - 2
20°C (68°F)
6.9 to 7.9 ohms
2009 Toyota Tundra
2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra
Fig. 39: Identifying Terminals Of D75 Or D76 OCV Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Disconnect the D74 ECM connector.
c. Measure the resistance according to the value(s) in the table below.
Standard resistance
RESISTANCE SPECIFIED CONDITION
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE ECM (See REMOVAL )
DTC P0011 CAMSHAFT POSITION "A" - TIMING OVER-ADVANCED OR SYSTEM
PERFORMANCE (BANK 1); DTC P0012 CAMSHAFT POSITION "A" - TIMING OVER-RETARDED
(BANK 1); DTC P0021 CAMSHAFT POSITION "A" - TIMING OVER-ADVANCED OR SYSTEM
PERFORMANCE (BANK 2); DTC P0022 CAMSHAFT POSITION "A" - TIMING OVER-RETARDED
(BANK 2)
DESCRIPTION
The VVT system includes the ECM, Oil Control Valve (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 intake camshaft angle using oil
Tester Connection
Condition Specified Condition
D75-1 - D74-58 (OC1+)
Always
Below 1 ohms
D76-1 - D74-52 (OC2+)
Always
Below 1 ohms
D75-2 - D74-57 (OC1-)
Always
Below 1 ohms
D76-2 - D74-51 (OC2-)
Always
Below 1 ohms
D75-1 or D74-58 (OC1+) - Body ground Always
10 kohms or higher
D76-1 or D74-52 (OC2+) - Body ground Always
10 kohms or higher
D75-2 or D74-57 (OC1-) - Body ground
Always
10 kohms or higher
D76-2 or D74-51 (OC2-) - Body ground
Always
10 kohms or higher
2009 Toyota Tundra
2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra
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