Toyota Tundra (2015 year). Manual — part 1272
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Calculate Load
Accelerator Idle Position
Short FT #1, #2
Long FT #1, #2
Cylinder #1 Misfire Count to Cylinder #8 Misfire Count
HINT:
AIR FUEL RATIO SENSOR
MONITORING METHOD
(P219A AND P219B)
CRANKSHAFT POSITION SENSOR
MONITORING METHOD (P219C, P219D,
P219E, P219F, P21A0, P21A1, P21A2
AND P21A3)
NOTE
DTCs are output
DTC is output (Only one DTC relating to
a single cylinder is output)
Method is primarily suspected.
DTCs are output
DTCs are output (Multiple DTCs relating
to multiple cylinders are output)
Sensor Monitoring Method is primarily
suspected.*1
DTCs are not output
DTCs are output
Method is primarily suspected.
DTCs are output
DTCs are not output
Method is primarily suspected.
*1: When any air-fuel ratio imbalance is detected, the ECM will perform air-fuel ratio feedback control to make
3.
READ VALUE USING DTC OUTPUT
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
HINT:
If any misfire count ("Cylinder #1 Misfire Count" to "Cylinder #8 Misfire Count) increases while idling or
driving the vehicle, proceed to step 6.
Perform inspections while focusing on the cylinder whose misfire count has increased.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P219A-P219F...
A
NEXT
(e) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Result
RESULT
PROCEED TO
P219A or P219B is output
A
P219A or P219B, and P219C, P219D, P219E, P219F, P21A0, P21A1, P21A2 or P21A3 is are output
B
DTC P219C, P219D, P219E, P219F, P21A0, P21A1, P21A2 and/or P21A3 are output
B
GO TO STEP 6
4.
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME)
(a) Connect the Techstream to the DLC3.
(b) Start the engine.
(c) Turn the Techstream on.
(d) Warm up the engine.
HINT:
The A/C switch and all accessory switches should be off and the shift lever should be in P or N.
(e) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume
/ Data List / Cylinder #1 to #8 Misfire Count.
HINT:
When the "Control the Injection Volume" Active Test is selected (injection volume is 0%), if a misfire count
increases, proceed to step 6 (Check Intake System).
(f) Perform the Control the Injection Volume operation with the engine idling.
(g) Check the misfire counts ("Cylinder #1 Misfire Count" to "Cylinder #8 Misfire Count") while
decreasing the injection volume in 5% increments.
NOTICE:
Do not decrease the injection volume by more than 20%.
The cylinder whose misfire count has not increased can be assumed to be running rich. Therefore, perform
inspections while focusing on that cylinder.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P219A-P219F...
OK
OK
OK
5.
CHECK FOR EXHAUST GAS LEAK
(a) Check for exhaust gas leaks.
OK:
No gas leaks.
HINT:
Perform "Inspection After Repair" after repairing or replacing the exhaust system
.
NG
REPAIR OR REPLACE EXHAUST SYSTEM
6.
CHECK INTAKE SYSTEM
(a) Check the intake system for vacuum leakage
.
OK:
No leakage in intake system.
HINT:
Perform "Inspection After Repair" after repairing or replacing the intake system
.
NG
REPAIR OR REPLACE INTAKE SYSTEM
7.
INSPECT SPARK PLUG
.
HINT:
Perform "Inspection After Repair" after replacing the spark plug
.
NG
REPLACE SPARK PLUG
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P219A-P219F...
NEXT
OK
OK
8.
CHECK FOR SPARKS AND IGNITION
(a) Perform a spark test
.
HINT:
.
9.
CHECK CYLINDER COMPRESSION PRESSURE
.
HINT:
Perform "Inspection After Repair" after repairing or replacing the engine assembly
.
NG
CHECK ENGINE TO DETERMINE CAUSE OF LOW
COMPRESSION
10.
CHECK FUEL INJECTOR ASSEMBLY OF CYLINDER CAUSING IMBALANCE
(a) Check the fuel injector injection [whether fuel volume is high or low, and whether injection pattern is
poor]
.
HINT:
Perform "Inspection After Repair" after replacing the fuel injector assembly
.
NG
REPLACE FUEL INJECTOR ASSEMBLY
11.
CHECK FOR CAUSE OF FAILURE
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P219A-P219F...
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