Toyota Tundra. Manual — part 1509

Bank 2



ECM

P2437

Secondary Air
Injection System Air
Flow/Pressure Sensor
Circuit Low Bank 2



Pressure sensor



Open or short in
pressure sensor
circuit



ECM

Comes on

DTC stored

P2438

Secondary Air
Injection System Air
Flow/Pressure Sensor
Circuit High Bank 2



Pressure sensor



Open or short in
pressure sensor
circuit



ECM

Comes on

DTC stored

P2440

Secondary Air
Injection System
Switching Valve
Stuck Open Bank 1



ASV



Open or short in
ASV circuit



Pressure sensor



Pressure sensor
circuit



Air Injection
Control Driver
(AID)



ECM

Comes on

DTC stored

P2441

Secondary Air
Injection System
Switching Valve
Stuck Close Bank 1



ASV



Open or short in
ASV circuit



Vacuum hose
(ASV - pressure
sensor)



Air injection
hose



Pressure sensor



Pressure sensor
circuit



Air Injection
Control Driver
(AID)



ECM

Comes on

DTC stored

P2442

Secondary Air
Injection System
Switching Valve
Stuck Open Bank 2



ASV



Open or short in
ASV circuit



Pressure sensor

Comes on

DTC stored

2009 Toyota Tundra

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



Pressure sensor
circuit



Air Injection
Control Driver
(AID)



ECM

P2443

Secondary Air
Injection System
Switching Valve
Stuck Closed Bank 2



ASV



Open or short in
ASV circuit



Vacuum hose
(ASV - pressure
sensor)



Air injection
hose



Pressure sensor



Pressure sensor
circuit



Air Injection
Control Driver
(AID)



ECM

Comes on

DTC stored

P2444

Secondary Air
Injection System
Pump Stuck On Bank
1



Short in air
pump circuit



Open or short in
pressure sensor
circuit



Pressure sensor



Air Injection
Control Driver
(AID)



ECM

Comes on

DTC stored

P2445

Secondary Air
Injection System
Pump Stuck Off Bank
1



Air pump



Open in air
pump circuit



Air injection
system piping



Vacuum hose
(pressure sensor
- air switching
valve)



Pressure sensor

Comes on

DTC stored

2009 Toyota Tundra

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



Open or short in
pressure sensor
circuit



Air Injection
Control Driver
(AID)



ECM

P2446

Secondary Air
Injection System
Pump Stuck On Bank
2



Short in air
pump circuit



Open or short in
pressure sensor
circuit



Pressure sensor



Air Injection
Control Driver
(AID)



ECM

Comes on

DTC stored

P2447

Secondary Air
Injection System
Pump Stuck Off Bank
2



Air pump



Open in air
pump circuit



Air injection
system piping



Vacuum hose
(pressure sensor
- air switching
valve)



Pressure sensor



Open or short in
pressure sensor
circuit



Air Injection
Control Driver
(AID)



ECM

Comes on

DTC stored

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
circuit (for Bank
1)



A/F sensor (for

Comes on

DTC stored

2009 Toyota Tundra

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

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

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.



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 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.

Fig. 36: Camshaft Position System Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE CHART

Bank 1)



ECM

P2A03

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



Open or short in
A/F sensor
circuit (for Bank
2)



A/F sensor (for
Bank 2)



ECM

Comes on

DTC stored

HINT:
*: The MIL flashes when a catalyst damaged misfire is detected.

DTC

DTC Detection Condition

Trouble Area

P0010

Open or short in OCV for intake
camshaft (for Bank 1) circuit (1



Open or short in OCV for
intake camshaft (for Bank 1)
circuit



OCV for intake camshaft

2009 Toyota Tundra

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