Toyota Tundra (2015 year). Manual — part 1655
Last Modified: 9-16-2014
6.6 C
Doc ID: RM0000013HC052X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FBE 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
Cumulative pressure pulsation is 60 kPa (450 mmHg) or
more for 2 seconds (1 trip detection logic).
ASV
Open or short in ASV circuit
Air switching valve
assembly (Pressure
sensor)
Pressure sensor circuit
Air Injection Control Driver
(AID)
ECM
The air switching valve (for bank 1) is stuck open for 7
seconds while the engine is running (2 trip detection logic).
P2441
The air switching valve (for bank 1) is stuck close for 7
seconds while the engine is running (2 trip detection logic).
ASV
Open or short in ASV circuit
Vacuum hose (ASV -
pressure sensor)
Air injection hose
Air switching valve
assembly (Pressure
sensor)
Pressure sensor circuit
Air Injection Control Driver
(AID)
ECM
P2442
Cumulative pressure pulsation is 60 kPa (450 mmHg) or
more for 2 seconds (1 trip detection logic).
ASV
Open or short in ASV circuit
Air switching valve
assembly (Pressure
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P244...
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
sensor)
Pressure sensor circuit
Air Injection Control Driver
(AID)
ECM
The air switching valve (for bank 2) is stuck open for 7
seconds while the engine is running (2 trip detection logic).
P2443
The air switching valve (for bank 2) is stuck close for 7
seconds while the engine is running (2 trip detection logic).
ASV
Open or short in ASV circuit
Vacuum hose (ASV -
pressure sensor)
Air injection hose
Air switching valve
assembly (Pressure
sensor)
Pressure sensor circuit
Air Injection Control Driver
(AID)
ECM
HINT:
Air switching valve normal operation:
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 stores 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
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P244...
MIL Operation
1 driving cycle: P2440, P2442 (AIR valve is stuck open) [Case 2]
2 driving cycles: P2440, P2442 (AIR valve is stuck open) [Case 1],
P2441, P2443 (AIR valve is stuck closed)
TYPICAL ENABLING CONDITIONS
All
Monitor runs whenever
following DTCs not
stored
P0010, P0020 (Camshaft Timing Oil Control Valve)
P0011, P0021 (VVT System - Advance)
P0012, P0022 (VVT System - Retard)
P0016, P0018 (VVT System - Misalignment)
P0013, P0023 (Exhaust Camshaft Timing Oil Control Valve)
P0014, P0024 (Exhaust VVT System - Advance)
P0015, P0025 (Exhaust VVT System - Retard)
P0017, P0019 (Exhaust VVT System - Misalignment)
P0031, P0032, P0051, P0052, P101D, P103D (Air Fuel Ratio Sensor Heater)
P014C, P014D, P014E, P014F, P015A, P015B, P015C, P015D, P2195, P2196,
P2197, P2198, P2237, P2238, P2239, P2240, P2241, P2242, P2252, P2253, P2255,
P2256 (Air Fuel Ratio Sensor)
P0102, P0103 (Mass Air Flow Sensor)
P0112, P0113 (Intake Air Temperature Sensor)
P0115, P0117, P0118 (Engine Coolant Temperature Sensor)
P0125 (Insufficient Coolant Temperature for Closed Loop Fuel Control)
P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135 (Throttle Position
Sensor)
P0171, P0172, P0174, P0175 (Fuel System)
P0301 - P0308 (Misfire)
P0327, P0328, P0332, P0333, P032C, P032D, P033C, P033D (Knock Sensor)
P0335 (Crankshaft Position Sensor)
P1340 (Camshaft Position Sensor)
P0340, P0342, P0343, P0345, P0347, P0348 (VVT Sensor)
P0365, P0367, P0368, P0390, P0392, P0393 (Exhaust VVT Sensor)
P0351 - P0358 (Igniter)
P0451, P0452, P0453 (EVAP System)
P0500, P0722 (Vehicle Speed Sensor)
P106B (Evap. emission control system pressure sensor - Air injection system
pressure sensor correlation)
P2431, P2432, P2433, 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
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P244...
*1: AIR monitor during AIR: ON
Time after AIR in operation
5 seconds or more
AIR pump
ON
AIR valve
Open
Engine speed
400 to 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]
(a) Cumulative intake air amount
100 gm/sec or more
(b) Difference between starting temperature and current
temperature
10°C (18°F) or more
(c) Starting coolant temperature
60°C (140°F) or higher
AIR pump
OFF
AIR valve
Closed
Engine speed
3750 rpm or less (for 100 L (26.4 US
gal) Fuel Tank)
4800 rpm or less (for 144 L (38 US
gal) Fuel Tank)
Secondary air injection system pressure sensor failure
Time after engine started
1 second or more
Time after secondary air injection starts operation
10 seconds or more
Air switching valve stuck open (DTC P2440, P2442)
Not stored
Secondary air injection system pressure sensor stuck off
(DTC P2445, P2447)
Not in operation
Engine load
20% or more
TYPICAL MALFUNCTION THRESHOLDS
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P244...
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