Toyota Tundra. Manual — part 1153

DTC P0010 CAMSHAFT POSITION "A" ACTUATOR CIRCUIT (BANK 1); DTC P0020 CAMSHAFT
POSITION "A" ACTUATOR CIRCUIT (BANK 2)

DESCRIPTION

The VVT (variable valve timing) system adjusts the intake valve timing to improve the driveability. The engine
oil pressure turns the camshaft actuator to adjust the valve timing. The OCV is a solenoid valve and switches
the engine oil line. The valve moves when the ECM applies the 12 V to the solenoid. The ECM changes the
energizing time to the solenoid (duty-cycle) in accordance with the camshaft position, crankshaft position,
throttle position, etc.

valve)



Pressure sensor



Open or short in
pressure sensor
circuit



Air Injection
Control Driver
(AID)



ECM

P2610

ECM/PCM Internal
Engine Off Timer
Performance

ECM

Comes on

DTC Stored

P2A00

A/F Sensor Circuit
Slow Response (Bank
1 Sensor 1)



Open or short in
A/F sensor(bank
1 sensor 1)
circuit



A/F sensor



A/F sensor heater



ECM

Comes on

DTC Stored

P2A03

A/F Sensor Circuit
Slow Response (Bank
2 Sensor 1)



Open or short in
A/F sensor(bank
2 sensor 1)
circuit



A/F sensor



A/F sensor heater



ECM

Comes on

DTC Stored

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

Fig. 34: Camshaft Position "A" Actuator Connection Diagram

DTC TROUBLE DETECTION CONDITION CHART

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.

DTC

No.

DTC Detection Condition

Trouble Area

P0010

Open or short in OCV (bank 1) circuit (1 trip detection
logic)



Open or short in OCV (bank 1)
circuit



OCV (bank 1)



ECM

P0020

Open or short in OCV (bank 2) circuit (1 trip detection
logic)



Open or short in OCV (bank 2)
circuit



OCV (bank 2)



ECM

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

MONITOR STRATEGY

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

TYPICAL MALFUNCTION THRESHOLDS

COMPONENT OPERATING RANGE

COMPONENT OPERATING RANGE

WIRING DIAGRAM

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

-

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%

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

Fig. 35: Camshaft Position "A" Actuator Wiring Diagram

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.

b. Turn the ignition switch OFF.

c. Allow the engine to idle and check DTC.

d. Check that P0010 or P0020 is present.

OK:

P0010 or P0020 is present.

NG : CHECK FOR INTERMITTENT PROBLEMS (See CHECK FOR INTERMITTENT
PROBLEMS )

OK : Go to next step

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra