Toyota Tundra (2015 year). Manual — part 1564
A
(d) Clear the DTCs
.
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Start the engine.
(g) Turn the Techstream on.
(h) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(i) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(j) Read the DTCs.
Result
RESULT
PROCEED TO
DTC P0420 and/or P0430 is output
A
DTC is not output
B
B
END
12.
CHECK DTC OUTPUT (DTC P0420 AND/OR P0430)
NOTICE:
When DTC P0420 is output, replace the front No. 2 exhaust pipe assembly (TWC: Front catalyst and rear catalyst) when
catalyst replacement is necessary.
When DTC P0430 is output, replace the front exhaust pipe assembly (TWC: Front catalyst and rear catalyst) when catalyst
replacement is necessary.
HINT:
Confirm the replacement parts, referring to the illustration in the Catalyst Location.
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream ON.
(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(e) Read the DTCs.
Result
RESULT
PROCEED TO
DTC P0420 is output
A
DTC P0430 is output
B
DTC P0420 and P0430 are output
A and B
B
REPLACE FRONT EXHAUST PIPE ASSEMBLY (TWC: FRONT CATALYST
AND REAR CATALYST)
A
REPLACE FRONT NO. 2 EXHAUST PIPE ASSEMBLY (TWC: FRONT
CATALYST AND REAR CATALYST)
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0420,P043...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000002BHB08BX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P043E,P043F,P2401,P2402,P2419; Evaporative
Emission System Leak Detection Reference Orifice Low Flow; 2015 MY Tundra [08/2014 - ]
DTC
P043E
Evaporative Emission System Leak Detection Reference Orifice Low Flow
DTC
P043F
Evaporative Emission System Reference Orifice High Flow
DTC
P2401
Evaporative Emission Leak Detection Pump Stuck OFF
DTC
P2402
Evaporative Emission Leak Detection Pump Stuck ON
DTC
P2419
Evaporative Emission System Switching Valve Control Circuit Low
DTC SUMMARY
DTC
MONITORING
ITEM
MALFUNCTION DETECTION
CONDITION
TROUBLE AREA
DETECTION
TIMING
DETECTION
LOGIC
P043E
Reference
orifice clogged
P043E, P043F, P2401,
P2402 and P2419 present
key-off EVAP monitor:
Reference
orifice clogged
Reference
orifice high-flow
Leak detection
pump OFF
malfunction
Leak detection
pump ON
malfunction
Vent valve ON
(close)
malfunction
Canister pump
module (Reference
orifice, leak
detection pump,
vent valve)
Connector/wire
harness (Canister
pump module -
ECM)
EVAP system hose
(pipe from air inlet
port to canister
pump module,
canister filter, fuel
tank vent hose)
ECM
While
ignition
switch off
2 trip
P043F
Reference
orifice
high-flow
P2401
Leak
detection
pump stuck
OFF
P2402
Leak
detection
pump stuck
ON
P2419
Vent valve
stuck closed
HINT:
The reference orifice is located inside the canister pump module.
DESCRIPTION
The description can be found in the EVAP (Evaporative Emission) System
.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P043E,P043...
INSPECTION PROCEDURE
Refer to the EVAP System
.
MONITOR DESCRIPTION
5 hours* after the ignition switch is turned off, the leak detection pump creates negative pressure (vacuum) in
the EVAP system. The ECM monitors for leaks and actuator malfunctions based on the EVAP pressure.
HINT:
*: If the engine coolant temperature is not below 35°C (95°F) 5 hours after the ignition switch is turned
off, the monitor check starts 2 hours later. If it is still not below 35°C (95°F) 7 hours after the ignition
switch is turned off, the monitor check starts 2.5 hours later.
SEQUENCE
OPERATION
DESCRIPTION
DURATION
-
ECM activation
Activated by soak timer 5, 7 or 9.5 hours after
ignition switch turned off.
-
A
Atmospheric
pressure
measurement
Vent valve turned OFF (vent) and EVAP system
pressure measured by ECM in order to register
atmospheric pressure.
If pressure in EVAP system not between 70 kPa-a
and 111 kPa-a (525 mmHg-a and 833 mmHg-a),
ECM cancels EVAP system monitor.
60 seconds
B
First reference
pressure
measurement
In order to determine reference pressure, leak
detection pump creates negative pressure (vacuum)
through reference orifice and then ECM checks if
leak detection pump and vent valve operate
normally.
360
seconds*1
300
seconds*2
C
EVAP system
pressure
measurement
Vent valve turned ON (closed) to shut
EVAP system.
Negative pressure (vacuum) created in
EVAP system, and EVAP system pressure
then measured.
Write down measured value as it will be
used in leak check.
If EVAP pressure does not stabilize within
15 minutes*1, ECM cancels EVAP system
monitor.
If EVAP pressure does not stabilize within
30 minutes*2, ECM cancels EVAP system
monitor.
15
minutes*1,
*3
30
minutes*2,
*3
D
Purge VSV
monitor
Purge VSV opened and then EVAP system pressure
measured by ECM.
Large increase indicates normality.
10 seconds
E
Second reference
pressure
measurement
After second reference pressure measurement, leak
check performed by comparing first and second
reference pressure.
If stabilized system pressure higher than second
reference pressure, ECM determines that EVAP
system leaking.
60 seconds
-
Final check
Atmospheric pressure measured and then
monitoring result recorded by ECM.
-
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P043E,P043...
HINT:
the EVAP pressure is between 724 to 752 mmHg* and saturated within a minute. If not, the ECM interprets
this as a malfunction. The ECM will illuminate the MIL and set a DTC if this malfunction is detected in
consecutive drive cycles.
*: Typical value.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P043E,P043...
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