Toyota Tundra (2015 year). Manual — part 1195
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NEXT
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
23.
REPLACE MASS AIR FLOW METER
(a) Replace the mass air flow meter
.
HINT:
.
24.
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
NOTICE:
In this operation, the engine must be cold (the same level as the engine coolant temperature recorded in
the freeze frame data).
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs
.
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Turn the ignition switch to ON and turn the Techstream on.
(g) Start the engine and warm it up.
(h) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving
Pattern.
(i) Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
(j) Input the DTC: P050A.
(k) Check the DTC judgment result.
Result
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P050A; Cold S...
RESULT
PROCEED TO
NORMAL
(DTC is not output)
A
ABNORMAL
(DTC P050A is output)
B
B
REPLACE ECM
A
END
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P050A; Cold S...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000002TZB075X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P050B; Cold Start Ignition Timing Performance; 2015
MY Tundra [08/2014 - ]
DTC
P050B
Cold Start Ignition Timing Performance
DESCRIPTION
The DTC is designed to monitor the ignition timing at cold start. When the engine is started at an engine coolant
is illuminated and a DTC is stored when the malfunction is detected in consecutive driving cycles (2 trip detection
logic).
NOTICE:
When the cable is disconnected from the negative battery terminal during inspections or repairs, the ISC
(Idle Speed Control) learning values are cleared. This DTC cannot be stored with the ISC learning values
cleared.
HINT:
The ISC learning is performed when the engine is warmed up and has been idling for 5 minutes.
DTC
DTC DETECTION CONDITION
TROUBLE AREA
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P050B; Cold St...
NO.
P050B
Insufficient ignition timing retard at cold start (2 trip
detection logic)
Throttle with motor body
assembly
Mass air flow meter
PCV system
Air cleaner filter element
sub-assembly
Intake system
VVT system
EGR valve assembly
ECM
Wire harness or connector
MONITOR STRATEGY
Related DTCs
P050B: Cold start ignition timing performance
Required Sensors/Components (Main)
Throttle with motor body assembly
Required Sensors/Components (Related)
Mass air flow meter
Engine Coolant Temperature (ECT) sensor
Duration
10 seconds
MIL Operation
2 driving cycles
TYPICAL ENABLING CONDITIONS
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)
P006A, P0107, P0108 (Manifold absolute pressure)
P0101, P0102, P0103 (Mass air flow meter)
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)
P0301 - P0308 (Misfire)
P0335 (Crankshaft position sensor)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P050B; Cold St...
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