Toyota Tundra (2015 year). Manual — part 1172
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.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0412,P0415; ...
A
PROCEDURE
1.
INSPECT AIR SWITCHING VALVE ASSEMBLY
(a) Inspect the air switching valve (for bank 1)
.
(b) Inspect the air switching valve (for bank 2)
.
Result
RESULT
PROCEED TO
OK
A
NG (for Bank 1)
B
NG (for Bank 2)
C
B
REPLACE AIR SWITCHING VALVE ASSEMBLY (FOR
BANK 1)
C
REPLACE AIR SWITCHING VALVE ASSEMBLY (FOR
BANK 2)
2.
CHECK HARNESS AND CONNECTOR (AIR SWITCHING VALVE - BODY GROUND)
(a) Disconnect the air switching valve connector.
(b) Measure the resistance according to the value(s) in the table
below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D58-1 (GND) - Body ground
Always
Below 1 Ω
D59-1 (GNDL) - Body ground
Always
Below 1 Ω
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0412,P0415; ...
OK
3.
CHECK HARNESS AND CONNECTOR (AIR SWITCHING VALVE - AIR INJECTION
CONTROL DRIVER)
(a) Disconnect the air switching valve connector.
(b) Disconnect the air injection control driver connector.
(c) Measure the resistance according to the value(s) in the table
below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED
CONDITION
D58-5 (+B) - D50-6 (VV)
Always
Below 1 Ω
D59-5 (+BL) - D54-6 (VV2)
Always
Below 1 Ω
D58-5 (+B) or D50-6 (VV) - Body
ground
Always
10 kΩ or higher
D59-5 (+BL) or D54-6 (VV2) -
Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE AIR INJECTION CONTROL DRIVER (FOR
BANK 1 OR BANK 2)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0412,P0415; ...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM0000012FZ05UX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0418,P0419; Secondary Air Injection System Control
"A" Circuit; 2015 MY Tundra [08/2014 - ]
DTC
P0418
Secondary Air Injection System Control "A" Circuit
DTC
P0419
Secondary Air Injection System Relay "B" Circuit
DESCRIPTION
Refer to DTC P0412
.
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
P0418
P0419
Secondary Air Injection (AIR) system not
operating (air pump OFF, Air Switching
Valve [ASV] OFF)
a.
Diagnostic signal from Air Injection Control
Driver (AID) 20%
b.
Battery voltage 8 V or more
c.
Open in air injection control
driver circuit
Air pump
Air injection control driver
ECM
P0418
P0419
Secondary Air Injection (AIR) system
operating (air pump ON, Air Switching Valve
[ASV] ON)
a.
Diagnostic signal from Air Injection Control
Driver (AID) 20%
b.
Battery voltage 8 V or more
c.
Short between air injection
control driver circuit and body
ground
Air pump
Air injection control driver
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.
signals from the ECM to drive the air pump.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0418,P0419; ...
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