Toyota Tundra (2015 year). Manual — part 2027
(a) Connect a pressure gauge to the air pressure sensor as
shown in the illustration.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON and turn the Techstream
on.
(d) Enter the following menus: Powertrain / Engine and ECT
/ Data List / Air pump pressure (absolute) and Air Pump2
Pressure (Absolute).
(e) Check that the pressure displayed on the Techstream
fluctuates when applying the pressure to the pressure
sensor with the pressure gauge.
NOTICE:
Do not let foreign matter enter the sensor when applying
pressure.
OK:
Pressure fluctuates in response to pressure applied with
pressure gauge.
HINT:
The Techstream displays the air pump pressure as absolute
pressure.
NG
REPLACE AIR SWITCHING VALVE ASSEMBLY
OK
REPLACE ECM
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2431-P2433...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM0000013HC053X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443; Secondary Air Injection System
Switching Valve Stuck Open Bank1; 2015 MY Tundra [08/2014 - ]
DTC
P2440
Secondary Air Injection System Switching Valve Stuck Open Bank1
DTC
P2441
Secondary Air Injection System Switching Valve Stuck Close Bank1
DTC
P2442
Secondary Air Injection System Switching Valve Stuck Open Bank 2
DTC
P2443
Secondary Air Injection System Switching Valve Stuck Closed Bank 2
DESCRIPTION
Refer to DTC P0412
.
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
P2440
P2442
engine is running (1 trip detection logic).
ASV
Open or short in
ASV circuit
Pressure sensor
Pressure sensor
circuit
Air Injection
Control Driver
(AID)
ECM
P2441
P2443
the engine is running (2 trip detection logic).
ASV
Open or short in
ASV circuit
Vacuum hose (ASV
- pressure sensor)
Air injection hose
Pressure sensor
Pressure sensor
circuit
Air Injection
Control Driver
(AID)
ECM
HINT:
Air switching valve normal operation:
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443;...
When the Air Switching Valve (ASV) is open, exhaust gas pulsation occurs in the secondary air passage.
When the ASV is closed, exhaust gas pulsation does not occur in the secondary air passage.
MONITOR DESCRIPTION
The ECM monitors the pressure in the secondary air passage using the pressure sensor connected to the ASV
illuminates the MIL and sets a DTC:
Exhaust gas pulsation is detected by the pressure sensor despite the ECM commanding the ASV to
close.
Exhaust gas pulsation is not detected by the pressure sensor despite the ECM commanding the ASV
to open.
MONITOR STRATEGY
Related DTCs
P2440: Air control valve stuck open
P2441: Air control valve stuck closed
P2442: Air control valve stuck open
P2443: Air control valve stuck closed
Required Sensors/Components (Main)
Pressure sensor
Required Sensors/Components (Related)
-
Duration
2 seconds: P2440 Case 2, P2442 Case 2
7 seconds: Others
MIL Operation
1 driving cycle: P2440 Case 2, P2442 Case 2
2 driving cycles: Others
TYPICAL ENABLING CONDITIONS
All
Monitor runs whenever
following DTCs not
present
P0010, P0020 (VVT oil control valve)
P0011, P0021 (VVT system - Advance)
P0012, P0022 (VVT system - Retard)
P0013, P0023 (Exhaust VVT oil control valve)
P0014, P0024 (Exhaust VVT system - Advance)
P0015, P0025 (Exhaust VVT system - Retard)
P0016, P0018 (VVT system - Misalignment)
P0017, P0019 (Exhaust VVT system - Misalignment)
P0031, P0032, P0051, P0052, P101D, P103D (Air fuel ratio sensor heater)
P0102, P0103 (Mass air flow meter)
P0112, P0113 (Intake air temperature sensor)
P0115, P0117, P0118 (Engine coolant temperature sensor)
P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135 (Throttle position
sensor)
P0125 (Insufficient Coolant Temperature for Closed Loop Fuel Control)
P014C, P014D, P014E, P014F, P015A, P015B, P015C, P015D, P2195, P2196,
P2197, P2198, P2237, P2238, P2239, P2240, P2241, P2242, P2252, P2253,
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443;...
P2255, P2256 (Air fuel ratio sensor)
P0171, P0172, P0174, P0175 (Fuel system)
P0301 - P0308 (Misfire)
P0327, P0328, P032C, P032D, P0332, P0333, P033C, P033D (Knock Sensor)
P0335 (Crankshaft position sensor)
P0340, P0342, P0343, P0345, P0347, P0348 (VVT sensor)
P0340, P1340 (Camshaft position sensor)
P0351 - P0358 (Igniter)
P0365, P0367, P0368, P0390, P0392, P0393 (Exhaust VVT sensor)
P0451, P0452, P0453 (Evaporative Emission System Pressure Sensor)
P0500 (Vehicle speed sensor)
P106B (Evap. emission control system Pressure Sensor - Air Injection System
Pressure Sensor correlation)
P219A, P219B, P219C, P219D, P219E, P219F, P21A0, P21A1, P21A2, P21A3
(Air-fuel ratio imbalance)
P2431, P2432, P2433, P2435, P2436, P2437, P2438 (Secondary Air Injection
System Pressure Sensor)
P2440, P2442 (AIR valve is stuck open) (Case 1), P2441, P2443 (AIR valve is stuck closed)
Battery voltage
11 V or higher
Atmospheric pressure
45 kPa (337.5 mmHg) or more
Engine
Running
AIR monitor during AIR: ON*1
Completed
AIR monitor during AIR: OFF*2
Completed
*1: AIR monitor during AIR: ON
Time after AIR in operation
5 seconds or more
AIR pump
ON
AIR valve
Open
Engine speed
Less than 3550 rpm
Intake air amount
Less than 99 gm/sec
Time after engine start
1 second or more
*2: AIR monitor during AIR: OFF
Time after AIR in operation
10 seconds or more
AIR pump
OFF
AIR valve
Closed
Engine speed
Less than 2800 rpm
AIR monitor during AIR: ON
Completed
Time after engine started
1 second or more
P2440, P2442 (AIR valve is stuck open) (Case 2)
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443;...
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