Toyota Tundra (2015 year). Manual — part 1541
A
OK
NEXT
SHORT FT + LONG FT
PROCEED TO
FREEZE FRAME DATA
DATA LIST
-35% or less
-35% or less
A
Higher than -35%
Higher than -35%
-35% or less
Higher than -35%
B
HINT:
If only the freeze frame data indicates -35% or less, a misfire may have occurred in the past. Confirm
owner's manual for details.)
B
END
3.
CHECK PCV HOSE CONNECTIONS
(a) Check the PCV hose connections.
OK:
PCV hose is connected correctly and is not damaged.
NG
REPAIR OR REPLACE PCV HOSE
4.
READ VALUE USING TECHSTREAM (MISFIRE RPM AND MISFIRE LOAD)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON and turn the Techstream on.
(c) Enter the following menus: Powertrain / Engine and ECT / Data List / Misfire / Misfire RPM and
Misfire Load.
(d) Read and note the Misfire RPM and Misfire Load values.
HINT:
The Misfire RPM and Misfire Load values indicate the vehicle conditions under which the misfire occurred.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0300-P030...
A
NEXT
5.
READ VALUE USING TECHSTREAM (CATALYST OT MF F/C)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON and turn the Techstream on.
(c) Enter the following menus: Powertrain / Engine and ECT / Data List / Catalyst OT MF F/C.
(d) Read the value displayed on the Techstream.
Result
DATA LIST
DISPLAY ITEM
PROCEED TO
Catalyst OT MF F/C
Avail
A
Not Avl
B
B
GO TO STEP 7
6.
PERFORM ACTIVE TEST USING TECHSTREAM (PROHIBIT THE CATALYST OT
MISFIRE PREVENT F/C)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON and turn the Techstream on.
(c) Clear DTCs
.
(d) Enter the following menus: Powertrain / Engine and ECT / Active Test / Prohibit the Catalyst
OT Misfire prevent F/C.
(e) Perform the Active Test.
NOTICE:
When performing the Active Test, make sure the vehicle is stopped and either idling or being revved
within 3000 rpm.
7.
READ VALUE USING TECHSTREAM (CYLINDER MISFIRE COUNT)
(a) Enter the following menus: Powertrain / Engine and ECT / Data List / Misfire / Cylinder #1
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0300-P030...
A
OK
Misfire Count, #2, #3, #4, #5, #6, #7 and #8.
(b) Allow the engine to idle.
(c) Read each value for Cylinder #1 Misfire Count to Cylinder #8 Misfire Count displayed on the
Techstream. If no misfire counts occur in any cylinders, perform the following procedures:
(1) Move the shift lever to the D position.
(2) Check the Cylinder #1 Misfire Count to Cylinder #8 Misfire Count.
(3) If misfire counts are still not displayed, perform procedure "A" and "B" and then check the
misfire counts again.
(d) Drive the vehicle with the Misfire RPM and Misfire Load noted in the "READ VALUE USING
TECHSTREAM (MISFIRE RPM AND MISFIRE LOAD)" procedures above. (Procedure "A")
(e) Read the Cylinder #1 Misfire Count to Cylinder #8 Misfire Count or DTCs displayed on the
Techstream. (Procedure "B")
Result
MISFIRE COUNT
PROCEED TO
Most misfires occur in only 1 or 2 cylinders
A
3 cylinders or more have equal misfire counts
B
HINT:
GO TO STEP 18
8.
INSPECT SPARK PLUG
.
NG
REPLACE SPARK PLUG
9.
CHECK FOR SPARK (SPARK TEST)
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0300-P030...
NEXT
OK
(a) Perform a spark test
.
HINT:
CHECK CYLINDER COMPRESSION PRESSURE
.
NG
CHECK ENGINE TO DETERMINE CAUSE OF LOW
COMPRESSION
11.
INSPECT ECM TERMINAL OF MISFIRING CYLINDER (#10, #20, #30, #40, #50,
#60, #70 AND/OR #80 VOLTAGE)
(a) Disconnect the D74 ECM connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the
table below.
Standard voltage:
TESTER CONNECTION
SWITCH
CONDITION
SPECIFIED
CONDITION
D74-86 (#10) - D74-43
(E01)
Ignition switch ON
11 to 14 V
D74-109 (#20) - D74-43
(E01)
Ignition switch ON
11 to 14 V
D74-85 (#30) - D74-43
(E01)
Ignition switch ON
11 to 14 V
D74-108 (#40) - D74-43
(E01)
Ignition switch ON
11 to 14 V
D74-84 (#50) - D74-43
(E01)
Ignition switch ON
11 to 14 V
D74-107 (#60) - D74-43
(E01)
Ignition switch ON
11 to 14 V
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0300-P030...
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