Toyota Tundra (2015 year). Manual — part 1581
NEXT
(i) Start the engine and warm it up.
(j) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving
Pattern.
(k) Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
(l) Input the DTC: P050A.
(m) Check the DTC judgment result.
Result
RESULT
PROCEED TO
NORMAL (DTC is not output)
A
ABNORMAL (DTC P050A is output)
B
B
GO TO STEP 15
A
CHECK FOR INTERMITTENT PROBLEMS
15.
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER CONNECTOR
CONNECTION)
.
HINT:
Repair any problems.
16.
CHECK WHETHER DTC OUTPUT RECURS (DTC P050A)
NOTICE:
For 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 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) Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P050A; Cold...
A
OK
NEXT
(h) Check that the engine coolant temperature is between - 10°C and 50°C (14 and 122°F).
(i) Start the engine and warm it up.
(j) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving
Pattern.
(k) Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
(l) Input the DTC: P050A.
(m) Check the DTC judgment result.
Result
RESULT
PROCEED TO
ABNORMAL (DTC P050A is output)
A
NORMAL (DTC is not output)
B
B
END
17.
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM)
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
18.
REPLACE MASS AIR FLOW METER
(a) Replace the mass air flow meter
.
HINT:
19.
CHECK WHETHER DTC OUTPUT RECURS (DTC P050A)
NOTICE:
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P050A; Cold...
For 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 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) Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp.
(h) Check that the engine coolant temperature is between - 10°C and 50°C (14 and 122°F).
(i) Start the engine and warm it up.
(j) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving
Pattern.
(k) Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
(l) Input the DTC: P050A.
(m) Check the DTC judgment result.
Result
RESULT
PROCEED TO
NORMAL (DTC is not output)
A
ABNORMAL (DTC P050A is output)
B
B
REPLACE ECM
A
END
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P050A; Cold...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000002TZB073X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FBE 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
malfunction. The MIL is illuminated and a DTC is set when the malfunction is detected in consecutive driving
cycles (2 trip detection logic).
NOTICE:
When the negative battery terminal is disconnected during inspections or repairs, the ISC (Idle Speed
Control) learning values are cleared. This DTC cannot be set 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
CODE
DTC DETECTION CONDITION
TROUBLE AREA
P050B
Insufficient ignition timing retard at cold start (2-trip
detection logic)
Throttle body assembly
Mass air flow meter
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P050B; Cold...
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