Toyota Tundra (2015 year). Manual — part 1171

DTC

NO.

DTC DETECTION CONDITION

TROUBLE AREA

P0412

P0415

Secondary Air Injection (AIR) system not

operating (air pump OFF, Air Switching Valve

[ASV] OFF)

a.

Diagnostic signal from Air Injection Control

Driver (AID) 40%

b.

Battery voltage 8 V or more

c.

Open in air switching valve

circuit

Air injection control driver

Air switching valve assembly

ECM

P0412

P0415

Secondary Air Injection (AIR) system

operating (air pump ON, Air Switching Valve

[ASV] ON)

a.

Diagnostic signal from Air Injection Control

Driver (AID) 40%

b.

Battery voltage 8 V or more

c.

Short between air switching

valve circuit and body

ground

Air injection control driver

Air switching valve assembly

ECM

MONITOR DESCRIPTION

to the ECM.

For a short time after a cold engine start, the ECM transmits command signals to the AID to drive the air pump

and ASV.

from the ECM to drive the ASV.

The voltage at the AID terminal relating to the ASV is high despite the AID receiving no command

signals from the ECM to drive the ASV.

The ECM stores the DTC based on diagnostic signals from the AID.

MONITOR STRATEGY

Related DTCs

P0412: Secondary air injection system air switching valve circuit range

check (Bank 1)

P0415: Secondary air injection system air switching valve circuit range

check (Bank 2)

Required Sensors/Components

(Main)

Air injection control driver

Required Sensors/Components

(Related)

Air switching valve assembly

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0412,P0415; ...

Duration

3 seconds

MIL Operation

Immediate

TYPICAL ENABLING CONDITIONS

Case 1

Monitor runs whenever following DTCs not present

None

Secondary air injection pump

Operating

Secondary air injection switching valve

Operating

Battery voltage

8 V or more

Ignition switch

ON

Starter

OFF

Case 2

Monitor runs whenever following DTCs not present

None

Secondary air injection pump

Not operating

Secondary air injection switching valve

Not operating

Battery voltage

8 V or more

Ignition switch

ON

Starter

OFF

TYPICAL MALFUNCTION THRESHOLDS

Diagnostic signal duty ratio from air injection control driver

31% or more, and 48% or less

COMPONENT OPERATING RANGE

Diagnostic signal duty ratio from air injection

control driver

70% or more, and 90% or less when secondary air injection

system operating.

0% when secondary air injection system not operating.

CONFIRMATION DRIVING PATTERN

NOTICE:

prohibition (WAIT or ERROR).

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0412,P0415; ...

If ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then

try again.

1.

Turn the ignition switch off.

2.

Connect the Techstream to the DLC3.

3.

Turn the ignition switch to ON.

4.

Turn the Techstream on.

5.

Clear DTCs (if set)

.

6.

Turn the ignition switch off and wait for at least 30 seconds.

7.

Turn the ignition switch to ON and turn the Techstream on.

8.

Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary air injection check /

Automatic Mode.

9.

Start the engine after the Techstream initialization is finished.

10.

Perform the System Check operation by pressing ENTER (Next).

11.

Perform the following to confirm the AIR system pending codes: Press ENTER (Exit).

12.

Check for pending DTCs.

OK:

No pending DTC is output.

13.

After the "Secondary air injection check" is completed, check for All Readiness by entering the

following menus: Powertrain / Engine and ECT / Utility / All Readiness.

14.

Input the DTC: P0412 or P0415.

15.

Check the DTC judgment result.

TESTER

DISPLAY

DESCRIPTION

NORMAL

DTC judgment completed

System normal

ABNORMAL

DTC judgment completed

System abnormal

INCOMPLETE

DTC judgment not completed

Perform driving pattern after confirming DTC enabling conditions

N/A

Unable to perform DTC judgment

HINT:

If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.

16.

If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and

check for permanent DTCs

.

17.

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0412,P0415; ...

HINT:

If no permanent DTC is output, the system is normal.
If a permanent DTC is output, the system is malfunctioning.

Turn the ignition switch off.

18.

WIRING DIAGRAM

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0412,P0415; ...