Toyota Tundra (2015 year). Manual — part 1173
The voltage at the AID terminal relating to the air pump is high despite the AID receiving no command
signals from the ECM to drive the air pump.
The ECM stores the DTC based on diagnostic signals from the AID.
MONITOR STRATEGY
Related DTCs
P0418: Secondary air injection system air pump circuit range check
(Bank 1)
P0419: Secondary air injection system air pump circuit range check
(Bank 2)
Required Sensors/Components (Main)
Air injection control driver
Required Sensors/Components
(Related)
Air pump
Duration
3 seconds
MIL Operation
2 driving cycles
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
11% or more, and 29% or less
COMPONENT OPERATING RANGE
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0418,P0419; ...
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).
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: P0418 or P0419.
15.
Check the DTC judgment result.
TESTER
DISPLAY
DESCRIPTION
NORMAL
DTC judgment completed
System normal
ABNORMAL
DTC judgment completed
System abnormal
16.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0418,P0419; ...
TESTER
DISPLAY
DESCRIPTION
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.
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
Refer to DTC P0412
.
INSPECTION PROCEDURE
HINT:
By using the Techstream to perform the Secondary Air Injection Check operation in the System Check, the
air-fuel ratio and the pressure in the secondary air injection system passage can be checked while the
secondary air injection system is operating. This helps technicians to troubleshoot the system when it
malfunctions.
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.
Bank 1 refers to the bank that includes the No. 1 cylinder*.
*: The No. 1 cylinder is the cylinder which is farthest from the transmission.
Bank 2 refers to the bank that does not include the No. 1 cylinder.
PROCEDURE
1.
CHECK HARNESS AND CONNECTOR (AIR PUMP - AIR INJECTION CONTROL DRIVER,
BODY GROUND)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0418,P0419; ...
OK
(a) Disconnect the cable from the battery negative (-) terminal.
(b) Disconnect the cable from the battery positive (+) terminal.
(c) Disconnect the air pump connector.
(d) Disconnect the air injection control driver (AID) connector.
(e) Measure the resistance according to the value(s) in the table
below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED
CONDITION
D89-2 (B) - D48-2 (VP)
Always
Below 1 Ω
D90-2 (+B) - D52-2 (VP2)
Always
Below 1 Ω
D48-1 (BATT) - Battery positive (+)
terminal
Always
Below 1 Ω
D52-1 (BAT2) - Battery positive (+)
terminal
Always
Below 1 Ω
D89-4 (E) - Body ground
Always
Below 1 Ω
D90-4 (GND) - Body ground
Always
Below 1 Ω
D89-2 (B) or D48-2 (VP) - Body
ground
Always
10 kΩ or higher
D90-2 (+B) or D52-2 (VP2) - Body
ground
Always
10 kΩ or higher
D48-1 (BATT) or Battery positive (+)
terminal - Body ground
Always
10 kΩ or higher
D52-1 (BAT2) or Battery positive (+)
terminal - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
2.
CHECK AIR PUMP
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0418,P0419; ...
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