Toyota Tundra (2015 year). Manual — part 1629
A
(a) Replace the camshaft position sensor
.
(b) Check the engine start operation.
OK:
Malfunction has been repaired successfully.
NG
REPLACE ECM
OK
END (CAMSHAFT POSITION SENSOR IS DEFECTIVE)
84.
READ VALUE USING TECHSTREAM (ISC LEARNING VALUE)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Start the engine and warm it up until the engine coolant temperature stabilizes with the A/C switch and
all the accessory switches should be off
(d) Using the Techstream, select and read [ISC Learning Value] in the Data List.
DATA LIST ITEM
RESULT
SUSPECTED AREA
PROCEED TO
ISC Learning Value
(engine displacement (liters) x 0.9) or more
Valve timing
Compression
A
Less than (engine displacement (liters) x 0.9)
-
B
B
GO TO STEP 86
85.
CHECK CYLINDER COMPRESSION PRESSURE
(a) Inspect the compression
.
NG
REPAIR OR REPLACE ENGINE ASSEMBLY
OK
CHECK ENGINE MECHANICAL SYSTEM
86.
INSPECT ENGINE COOLANT TEMPERATURE SENSOR
(a) Inspect the engine coolant temperature sensor
.
NG
REPLACE ENGINE COOLANT TEMPERATURE SENSOR
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1604; Start...
OK
OK
A
87.
CHECK FUEL PRESSURE
HINT:
For the fuel pressure inspection, refer to the following procedures
.
(a) Attach a fuel pressure gauge and check the fuel pressure when cranking the engine and after stopping
the engine.
VEHICLE STATE
SPECIFIED CONDITION
Cranking engine
270 to 430 kPa (2.75 to 4.38 kgf/cm
2
)
5 minutes after stopping engine
147 kPa (1.5 kgf/cm
2
) or more
NG
GO TO STEP 93
88.
READ VALUE USING TECHSTREAM (LONG FT)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Using the Techstream, select and read [Long FT] in the Data List.
DATA LIST ITEM
RESULT
SUSPECTED AREA
PROCEED TO
Long FT
-15 to +15%
Wire harness or connector
Fuel
A
+15% or more, or less than -15%
Fuel injector
B
B
REPLACE FUEL INJECTOR
89.
PERFORM SIMULATION TEST
(a) Check if the idling speed after starting the engine is currently stable and has always been stable in the
past.
PROBLEM SYMPTOM
SUSPECTED AREA
PROCEED TO
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1604; Start...
A
OK
PROBLEM SYMPTOM
SUSPECTED AREA
PROCEED TO
A
All current and past idling speeds are stable
Fuel
B
HINT:
Through the customer problem analysis, confirm the fuel being used and the location at which the fuel was added
to check if the malfunction is caused by the fuel in the vehicle.
B
REPLACE FUEL
90.
CHECK CRANKSHAFT POSITION SENSOR
OK:
Sensor is installed correctly.
NG
SECURELY REINSTALL SENSOR
91.
CHECK HARNESS AND CONNECTOR (CRANKSHAFT POSITION SENSOR - ECM)
(a) Disconnect the crankshaft position sensor connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D3-1 (NE+) - D74-110 (NE+)
Always
Below 1 Ω
D3-2 (NE-) - D74-111 (NE-)
Always
Below 1 Ω
D3-3 (VC) - D74-66 (VCV2)
Always
Below 1 Ω
D3-1 (NE+) or D74-110 (NE+) - Body ground
Always
10 kΩ or higher
D3-2 (NE-) or D74-111 (NE-) - Body ground
Always
10 kΩ or higher
D3-3 (VC) or D74-66 (VCV2) - Body ground
Always
10 kΩ or higher
HINT:
REPAIR OR REPLACE HARNESS OR CONNECTOR
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1604; Start...
OK
92.
CHECK CRANKSHAFT POSITION SENSOR
(a) Replace the crankshaft position sensor
.
(b) Check the engine start operation.
OK:
Malfunction has been repaired successfully.
NG
REPLACE ECM
OK
END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)
93.
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
RESULT
PROCEED TO
HINT:
GO TO STEP 94
A
REPAIR OR REPLACE FUEL LINE
94.
INSPECT FUEL PUMP
(a) Remove the fuel suction tube.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1604; Start...
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