Toyota Tundra (2015 year). Manual — part 1580
OK
If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and
check for permanent DTCs
.
HINT:
If a permanent DTC is output, the system is malfunctioning.
If no permanent DTC is output, the system is normal.
15.
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the Techstream. The ECM records vehicle and driving condition
information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame
data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if
the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
PROCEDURE
1.
CHECK ANY OTHER DTCS OUTPUT
(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 DTCs.
Result
RESULT
PROCEED TO
DTC P050A
A
DTC P050A and other DTCs
B
HINT:
If any DTCs other than P050A are output, troubleshoot those DTCs first.
NG
GO TO DTC CHART
2.
READ VALUE USING TECHSTREAM (FUEL TRIM)
HINT:
(b) Turn the ignition switch to ON and turn the Techstream ON.
(c) Enter the following menus: Powertrain / Engine and ECT / Data List / A/F Control System /
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P050A; Cold...
OK
OK
Short FT #1 and Long FT #1, or Short FT #2 and Long FT #2.
(d) Read the values displayed on the Techstream.
(e) Add together the Short FT #1 and Long FT #1, or Short FT #2 and Long FT #2 values to
obtain the total fuel trim.
GO TO STEP 5
3.
INSPECT THROTTLE BODY ASSEMBLY
(a) Check for deposits around the throttle valve and throttle valve condition.
OK:
No deposits around throttle valve and throttle valve moves smoothly.
OK
GO TO STEP 14
NG
GO TO STEP 4
4.
REPAIR OR REPLACE THROTTLE BODY ASSEMBLY
(a) Repair or replace throttle body assembly
.
NEXT
GO TO STEP 14
5.
CHECK PCV SYSTEM
(a) Check the PCV hose connections
.
OK:
PCV hose is connected correctly and is not damaged.
NG
GO TO STEP 10
6.
CHECK AIR INDUCTION SYSTEM
(a) Check the air induction system for vacuum leakage
.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P050A; Cold...
OK
OK
OK
NG
GO TO STEP 11
7.
CHECK AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
(a) Visually check that the air cleaner filter element sub-assembly is not excessively contaminated
with dirt or oil.
OK:
The air cleaner filter element sub-assembly is not excessively contaminated with dirt or oil.
NG
GO TO STEP 12
8.
PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL
CONTROL VALVE ASSEMBLY)
(a) Operate the VVT system through the Active test, and check if the VVT system is operating
normally.
(1) Perform the Active Test, referring to DTC P0011 inspection procedure (VVT system for
intake side)
.
(2) Perform the Active Test, referring to DTC P0014 inspection procedure (VVT system for
exhaust side)
.
NG
GO TO STEP 13
9.
READ VALUE USING TECHSTREAM (MAF)
OK
GO TO STEP 14
NG
GO TO STEP 15
10.
REPAIR OR REPLACE PCV SYSTEM
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P050A; Cold...
NEXT
(a) Repair or replace the PCV system.
NEXT
GO TO STEP 14
11.
REPAIR OR REPLACE AIR INDUCTION SYSTEM
(a) Repair or replace the air induction system.
NEXT
GO TO STEP 14
12.
REPLACE AIR CLEANER FILTER ELEMENT SUB-ASSEMBLY
(a) Replace the air cleaner filter element sub-assembly.
NEXT
GO TO STEP 14
13.
CHECK AND REPAIR VVT SYSTEM
(a) Check and repair the VVT system.
HINT:
Refer to DTC P0011 Inspection Procedure (VVT system for intake side)
.
Refer to DTC P0014 Inspection Procedure (VVT system for exhaust side)
.
14.
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.
(h) Check that the engine coolant temperature is between - 10°C and 50°C (14 and 122°F).
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P050A; Cold...
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