Toyota Tundra (2015 year). Manual — part 1285
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)
A
CHECK FOR INTERMITTENT PROBLEMS
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443;...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM0000013HD04NX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444-P2447; Secondary Air Injection System Pump
Stuck On Bank1; 2015 MY Tundra [08/2014 - ]
DTC
P2444
Secondary Air Injection System Pump Stuck On Bank1
DTC
P2445
Secondary Air Injection System Pump Stuck Off Bank1
DTC
P2446
Secondary Air Injection System Pump Stuck Open Bank 2
DTC
P2447
Secondary Air Injection System Pump Stuck Closed Bank 2
DESCRIPTION
Refer to P2440
.
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
P2444
P2446
Secondary air pressure more than 3.0 kPa (23 mmHg)
despite ECM commanding air pump to turn off
(2 trip detection logic)
Short in air pump circuit
Open or short in pressure
sensor circuit
Pressure sensor (Air switching
valve assembly)
Air injection control driver
(AID)
ECM
P2445
P2447
Secondary air pressure less than 1.9 kPa (14 mmHg) despite
ECM commanding air pump to turn on
(2 trip detection logic)
Air pump assembly
Open in air pump circuit
Air injection system piping
Pressure sensor (Air switching
valve assembly)
Open or short in pressure
sensor circuit
Air injection control driver
(AID)
EGR valve assembly
ECM
(2 trip detection logic)
MONITOR DESCRIPTION
The ECM monitors the pressure in the secondary air passage using the pressure sensor located on the Air
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444-P2447;...
The pressure indicated by the pressure sensor does not reach threshold levels despite the ECM turning
on the air pump.
The pressure indicated by the pressure sensor exceeds threshold levels despite the ECM turning off the
air pump.
MONITOR STRATEGY
Related DTCs
P2444: Air pump stuck ON
P2445: Air pump stuck OFF
P2446: Air pump stuck ON
P2447: Air pump stuck OFF
Required Sensors/Components (Main)
Pressure sensor
Required Sensors/Components (Related)
-
Duration
7 seconds
MIL Operation
2 driving cycles
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)
P006A, P0107, P0108 (Manifold absolute pressure)
P0101, 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,
P2255, P2256 (Air fuel ratio sensor)
P0171, P0172, P0174, P0175 (Fuel system)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444-P2447;...
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)
P0401 (EGR system)
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)
Battery voltage
11 V or more
Atmospheric pressure
45 kPa (338 mmHg) or more
Engine
Running
AIR monitor during AIR:
ON*1
Completed
AIR monitor during AIR:
OFF*2
Completed
AIR injection driver fail
(open/short or out of
range)
Not detected
AIR pressure sensor fail
(open/short or out of
range)
Not detected
*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 3750 rpm
Intake air amount
Less than 100 gm/s
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
Close
Engine speed
Below 3000 rpm
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444-P2447;...
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