Toyota Tundra. Manual - part 1513

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

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

P0023

Open or short in OCV for exhaust
camshaft (for Bank 2) circuit (1
trip detection logic)

exhaust camshaft (for Bank
2) circuit



OCV for exhaust camshaft
(for Bank 2)



ECM

Related DTCs

P0013: Exhaust camshaft OCV (for Bank 1)
P0023: Exhaust camshaft OCV (for Bank 2)

Required sensors/components (Main)

Exhaust camshaft OCV

Required sensors/components (Sub)

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

Time after ignition switch off to ON

0.5 seconds or more

One of following conditions met

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%

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra

COMPONENT OPERATING RANGE

WIRING DIAGRAM

Fig. 45: Camshaft Position - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION PROCEDURE

HINT:



If DTC P0013 is displayed, check the bank 1 VVT system for exhaust camshaft circuit.



Bank 1 refers to the bank that includes No. 1 cylinder.



If DTC P0023 is displayed, check the bank 2 VVT system for exhaust camshaft circuit.



Bank 2 refers to the bank that does not include No. 1 cylinder.



Read freeze frame data using the Techstream. The ECM records vehicle and driving condition
information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data
can be helpful in determining whether the vehicle was running or stopped, whether the engine was
warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of
a malfunction (see DTC CHECK/CLEAR ).

1. CHECK DTC (DTC P0013 OR P0023)

a. Connect the Techstream to the DLC3.

Output signal duty ratio

100%

C. Both of following conditions met

Current cut status

Not cut

Output signal duty ratio

3% or less

OCV duty-cycle

4 to 100% when engine running

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra

b. Clear DTC after recording the freeze frame data and DTC.

c. Turn the ignition switch off.

d. Allow the engine to idle and check DTC.

e. Check that P0013 or P0023 is not present.

OK: P0013 or P0023 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 D44 or D45 OCV connector.

b. Remove the OCV (see REMOVAL ).

c. 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 )

Fig. 46: Identifying Terminals Of D75 Or D76 OCV Connector
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: Go to next step.

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

3. CHECK HARNESS AND CONNECTOR (OCV - ECM)

a. Disconnect the D44 or D45 OCV connector.

Fig. 47: Identifying Terminals Of D44 Or D45 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.

2009 Toyota Tundra

2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra

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