Toyota Tundra. Manual — part 1328

(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

Applies

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

Applies

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



Open or short in
pressure sensor
circuit



Air Injection

Comes on

DTC stored

Applies

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

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

Applies

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

Applies

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
bank 1)



ECM

Comes on

DTC stored

-

P2A03

A/F Sensor Circuit
Slow Response



Open or short in
A/F sensor

Comes on

DTC stored

-

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - 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 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.

(Bank 2 Sensor 1)

circuit (for bank
2)



A/F sensor (for
bank 2)



ECM

U0101

Lost
Communication
with TCM



Open or short in
TCM and ECM
circuit



TCM



ECM

Comes on

DTC stored

Applies

HINT:
*1: The MIL flashes when a catalyst damaged misfire is detected.
*2: Only for Mexico models

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

Fig. 34: DTC P0010 Camshaft Position "A" Actuator Circuit (Bank 1) - Communication Diagram

DTC DETECTION CONDITION AND TROUBLE AREA

HINT:

This DTC relates to the Oil Control Valve (OCV).

MONITOR DESCRIPTION

DTC

Code

DTC Detection Condition

Trouble Area

P0010

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



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



OCV for intake camshaft (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

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra