Toyota Tundra (2015 year). Manual — part 1242
OK
HINT:
.
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE IGNITION COIL ASSEMBLY
45.
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test.
(d) When performing the Active Test, check for an operating sound from the fuel pump.
Standard:
CONTROL THE FUEL PUMP / SPEED
SPECIFIED CONDITION
ON
Operating sound heard
OFF
Operating sound not heard
HINT:
NG
CHECK FUEL PUMP CONTROL SYSTEM
46.
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Using the Techstream, select the [Control the Fuel Pump / Speed] Active Test.
(d) When performing the Active Test, check for fuel leakage from the fuel pipes.
Result
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1604; Startabi...
OK
RESULT
PROCEED TO
HINT:
CHECK FUEL PUMP CONTROL SYSTEM
A
REPAIR OR REPLACE FUEL LINE
47.
READ VALUE USING TECHSTREAM (ENGINE SPEED)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(e) While running the engine, read the [Engine Speed] value.
Standard:
A value that matches the actual engine speed is constantly output.
HINT:
Check the engine speed using a line graph.
If the engine cannot be started, check the engine speed while cranking the engine.
If the engine speed is 0 rpm, the crankshaft position sensor may have an open or short circuit.
NG
REPLACE CRANKSHAFT POSITION SENSOR
48.
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR POWER SOURCE)
(a) Check the harnesses and connectors, referring to Fuel Injector Circuit inspection procedure
.
HINT:
OK
OK
NG
REPAIR POWER SOURCE CIRCUIT
OK
REPLACE ECM
49.
CHECK MASS AIR FLOW METER
(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:
The A/C switch and all accessory switches should be off, and the shift lever should be in N or P.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / Data List / MAF.
(e) Check MAF in the Data List during idling.
Standard:
3.4 to 6.2 gm/sec.
NG
GO TO STEP 57
50.
CHECK INTAKE SYSTEM
(a) Check for air leakage in the intake system [vacuum hose disconnection, cracks, damaged gaskets, etc.]
.
HINT:
.
Standard:
There is no air leakage.
NG
REPAIR OR REPLACE INTAKE SYSTEM
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1604; Startabi...
A
OK
51.
CHECK THROTTLE WITH MOTOR BODY ASSEMBLY
(a) Disconnect the throttle with motor body assembly connector.
HINT:
When the connector is disconnected, the vehicle enters fail-safe mode and the throttle valve opening angle is 4 to
7°.
(b) Crank the engine and check that it starts.
RESULT
PROCEED TO
Engine starts
A
Engine does not start
B
(c) Connect the throttle with motor body assembly connector.
HINT:
When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs
.
B
GO TO STEP 53
52.
CHECK THROTTLE WITH MOTOR BODY ASSEMBLY
(a) Check if carbon is in the air flow passage.
Standard:
No carbon present.
HINT:
Perform "Inspection After Repair" after cleaning the throttle with motor body assembly
.
NG
REMOVE FOREIGN OBJECT AND CLEAN THROTTLE WITH
MOTOR BODY ASSEMBLY
53.
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT SYSTEM)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1604; Startabi...
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