Toyota Tundra (2015 year). Manual — part 1633
For a short time after cold engine starts, the ECM transmits command signals to the Air Injection Control
Driver (AID) to drive the air pump and the Air Switching Valve (ASV). The AID detects open and short circuits
If the Secondary Air Injection (AIR) system circuit or the AID itself malfunctions, the AID sends a malfunction
signal (duty signal) as diagnostic information to the ECM (when the system is normal, a system normal signal
is sent). The ECM sets the DTC based on the diagnostic information from the AID.
EXAMPLE:
1.
2.
The AID outputs the normal signal (normal duty signal: 80%) while the system is not operating.
3.
MONITOR STRATEGY
Related DTCs
P1613: Secondary air injection system air injection control driver
circuit range check
P1614: Secondary air injection system air injection control driver
circuit range check
Required Sensors/Components
(Main)
Air injection control driver
Required Sensors/Components
(Related)
Air switching valve
Duration
3 seconds
MIL Operation
Immediate
TYPICAL ENABLING CONDITIONS
Case 1 and 4:
Monitor runs whenever following DTCs not stored
None
Battery voltage
8 V or more
Ignition switch
ON
Starter
OFF
Case 2:
Monitor runs whenever following DTCs not stored
None
Either a or b met:
-
a. Air pump
Not operating
b. Air switching valve
Not operating
Battery voltage
8 V or more
Ignition switch
ON
Starter
OFF
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1613,P1614...
Case 3:
Monitor runs whenever following DTCs not stored
None
Following conditions (a) and (b) met
-
a. Air pump
Operating
b. Air switching valve
Operating
Battery voltage
8 V or more
Ignition switch
ON
Starter
OFF
TYPICAL MALFUNCTION THRESHOLDS
Case 1:
A. Diagnostic signal duty ratio from air injection control driver
1% or more, and 10% or less
B. Diagnostic signal duty ratio from air injection control driver
30%
C. Diagnostic signal duty ratio from air injection control driver
49%
D. Diagnostic signal duty ratio from air injection control driver
91% or more, and 99% or less
Case 2:
Diagnostic signal duty ratio from air injection control driver
70% or more, and 90% or less
Case 3:
Diagnostic signal duty ratio from air injection control driver
0%
Case 4:
Diagnostic signal duty ratio from air injection control driver
100%
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.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1613,P1614...
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 the 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: P1613 or P1614.
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.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1613,P1614...
A
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 ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P1613 OR P1614)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON and turn the Techstream on.
(c) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(d) Read DTCs.
Result
RESULT
PROCEED TO
P1613 and/or P1614 are output
A
P1613 and/or P1614 and other DTCs are output
B
If any DTCs other than P1613 and P1614 are output, troubleshoot those DTCs first.
B
GO TO DTC CHART
2.
CHECK AIR INJECTION CONTROL DRIVER (POWER SOURCE CIRCUIT)
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1613,P1614...
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