Toyota Tundra (2015 year). Manual — part 1555
Last Modified: 9-16-2014
6.6 C
Doc ID: RM0000012FY05CX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0412,P0415; Secondary Air Injection System
Switching Valve "A" Circuit; 2015 MY Tundra [08/2014 - ]
DTC
P0412
Secondary Air Injection System Switching Valve "A" Circuit
DTC
P0415
Secondary Air Injection System Switching Valve "B" Circuit
DESCRIPTION
The AID drives the ASV and the air pump according to command signals transmitted by the ECM. The pressure
sensor detects the pressure in the secondary air passage when the AIR system is ON and OFF, and transmits a
pressure signal to the ECM.
The AID is not only equipped to drive the pump and valve, but also with a diagnosis function to detect
malfunctions in the AIR system circuit.
HINT:
As a large current is required to drive the air pump and ASV, an AID is installed to this system.
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0412,P0415...
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 ASV drive circuit
AID
ASV
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 ASV drive
circuit and body ground
AID
ASV
ECM
MONITOR DESCRIPTION
signal to the ECM.
For a short time after cold engine starts, the ECM transmits command signals to the AID to drive the air pump
and ASV.
signals 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
Duration
3 seconds
MIL Operation
Immediate
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0412,P0415...
TYPICAL ENABLING CONDITIONS
Case 1:
Monitor runs whenever following DTCs not stored
-
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 stored
-
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:
This Secondary Air Injection Check only allows technicians to operate the AIR system for a maximum of
5 seconds.
Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated,
the prohibition (WAIT or ERROR).
If ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then
try again.
Start the engine and warm it up.
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 output)
.
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
.
HINT:
If no permanent DTC is output, the system is normal.
If a permanent DTC is output, the system is malfunctioning.
17.
Turn the ignition switch off.
18.
WIRING DIAGRAM
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0412,P0415...
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