Toyota Tundra (2015 year). Manual — part 1625
OK
CYLINDER
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
No. 2
F1-1 - Body ground
Always
10 kΩ or higher
F1-1 - D74-109 (#20)
Always
Below 1 Ω
No. 3
H2-1 - Body ground
Always
10 kΩ or higher
H2-1 - D74-85 (#30)
Always
Below 1 Ω
No. 4
F2-1 - Body ground
Always
10 kΩ or higher
F2-1 - D74-108 (#40)
Always
Below 1 Ω
No. 5
H3-1 - Body ground
Always
10 kΩ or higher
H3-1 - D74-84 (#50)
Always
Below 1 Ω
No. 6
F3-1 - Body ground
Always
10 kΩ or higher
F3-1 - D74-107 (#60)
Always
Below 1 Ω
No. 7
H4-1 - Body ground
Always
10 kΩ or higher
H4-1 - D74-83 (#70)
Always
Below 1 Ω
No. 8
F4-1 - Body ground
Always
10 kΩ or higher
F4-1 - D74-106 (#80)
Always
Below 1 Ω
HINT:
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE ECM
51.
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:
4.0 to 8.0 gm/sec.
NG
GO TO STEP 57
52.
CHECK INTAKE SYSTEM
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1604; Start...
OK
A
(a) Check for air leakage in the intake system [vacuum hose disconnection, cracks, damaged gaskets, etc.]
.
HINT:
There is no air leakage.
NG
REPAIR OR REPLACE INTAKE SYSTEM
53.
CHECK THROTTLE BODY ASSEMBLY
(a) Disconnect the throttle 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 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 55
54.
CHECK THROTTLE BODY ASSEMBLY
(a) Check if carbon is in the air flow passage.
Standard:
No carbon present.
NG
REMOVE FOREIGN OBJECT AND CLEAN THROTTLE BODY
ASSEMBLY
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1604; Start...
OK
OK
55.
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT SYSTEM)
(a) Connect the Techstream to the DLC3.
(b) Turn the Techstream on.
(c) Warm up the engine.
(d) Enter the following menus: Powertrain / Engine and ECT / Active
Test / Control the VVT System (Bank 1) or Control the VVT System
(Bank 2).
HINT:
When performing the Active Test, make sure the A/C is on and the shift
lever is in P or N.
(e) Check the engine speed while operating the Oil Control Valve
(OCV) using the Techstream.
OK*1:
TESTER
OPERATION
SPECIFIED CONDITION
OFF
Normal engine speed
ON
Soon after OCV switched from OFF to ON, engine idles
roughly or stalls
HINT:
REPLACE CAMSHAFT OIL CONTROL VALVE ASSEMBLY (for
Intake Side)
56.
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT EXHAUST LINEAR)
(a) Connect the Techstream to the DLC3.
(b) Turn the Techstream on.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1604; Start...
(c) Warm up the engine.
(d) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Exhaust Linear
(Bank1) or Control the VVT Exhaust Linear (Bank2).
HINT:
When performing the Active Test, make sure the A/C is on and the shift lever is in P or N.
(e) Check the engine speed while operating the Oil Control Valve (OCV) using the Techstream.
OK*1:
TESTER OPERATION
SPECIFIED CONDITION
0%
Normal engine speed
100%
Engine idles roughly or stalls
HINT:
GO TO STEP 72
NG
REPLACE CAMSHAFT OIL CONTROL VALVE ASSEMBLY (for
Exhaust Side)
57.
CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM)
(a) Disconnect the MAF meter 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
D7-3 (VG) - D74-74 (VG)
Always
Below 1 Ω
D7-2 (E2G) - D74-75 (E2G)
Always
Below 1 Ω
D7-3 (VG) or D74-74 (VG) - Body ground
Always
10 kΩ or higher
HINT:
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE MASS AIR FLOW METER
58.
INSPECT ENGINE COOLANT TEMPERATURE SENSOR
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P1604; Start...
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