Toyota Tundra (2015 year). Manual — part 1152

OK

OK

OK

No leakage in intake system.

HINT:

Perform "Inspection After Repair" after repairing or replacing the intake system

.

NG

REPAIR OR REPLACE INTAKE SYSTEM

20.

CHECK FUEL PRESSURE

(a) Check the fuel pressure

.

NG

GO TO STEP 36

21.

READ VALUE USING TECHSTREAM (COOLANT TEMP)

NG

REPLACE ENGINE COOLANT TEMPERATURE

SENSOR

22.

READ VALUE USING TECHSTREAM (MAF)

(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 / Data List / MAF and Coolant Temp.

(e) Allow the engine to idle until Coolant Temp reaches 75°C (167°F) or higher.

(f) Read the MAF with the engine speed at 3000 rpm.

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0300-P0308;...

OK

OK

Standard:

Between 18.3 gm/sec. and 25.8 gm/sec. (shift lever: N; A/C: Off)

NG

GO TO STEP 31

23.

CHECK VALVE TIMING

NG

ADJUST VALVE TIMING

24.

PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE EGR STEP POSITION)

(a) Connect the Techstream to the DLC3.

(b) Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or

higher.

HINT:

When performing the Active Test, make sure the shift lever is in P or N.
The A/C switch and all accessory switches should be off.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step

Position.

(e) Confirm the Throttle Idle Position is ON and check the engine idling condition and MAP values in the

Data List while performing the Active Test.

HINT:

Do not leave the EGR valve open for 10 seconds or more during the Active Test.
Be sure to return the EGR valve to step 0 when the Active Test is completed.

OK:

MAP and idling condition change in response to EGR step position as follows.

Standard:

-

EGR STEP POSITION (ACTIVE TEST)

0 STEPS

0 TO 30 STEPS

Idling

Steady idling

Idling changes from steady to rough idling or engine stall

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0300-P0308;...

OK

OK

-

EGR STEP POSITION (ACTIVE TEST)

0 STEPS

0 TO 30 STEPS

condition

MAP

(Data List)

20 to 40 kPa (150 to 300

mmHg)

MAP value is at least +10 kPa (75 mmHg) higher than when EGR

valve is fully closed

OK

GO TO STEP 31

NG

GO TO STEP 25

25.

INSPECT EGR VALVE ASSEMBLY

(a) Remove the EGR valve assembly

.

(b) Check if the EGR valve is stuck open.

OK:

EGR valve is tightly closed.

HINT:

Perform "Inspection After Repair" after replacing the EGR valve assembly

.

NG

REPLACE EGR VALVE ASSEMBLY

26.

INSPECT SPARK PLUG

.

HINT:

Perform "Inspection After Repair" after replacing the spark plug

.

NG

REPLACE SPARK PLUG

27.

CHECK FOR SPARK (SPARK TEST)

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0300-P0308;...

NEXT

OK

(a) Perform the spark test

.

HINT:

.

28.

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

29.

INSPECT ECM TERMINAL OF MISFIRING CYLINDER (#10, #20, #30, #40, #50, #60,
#70 AND/OR #80 VOLTAGE)

(a) Disconnect the 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

1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0300-P0308;...