Toyota Tundra (2015 year). Manual — part 2056
OK
(a) Remove the fuel tank assembly
.
(b) Remove the fuel pump from the fuel tank assembly.
(c) Clean the fuel pump to completely remove any remaining
fuel.
(d) Connect the fuel pump connector.
CAUTION:
(e) Connect the Techstream to the DLC3.
(f) Turn the ignition switch to ON.
(g) Turn the Techstream on.
(h) Enter the following menus: Powertrain / Engine and ECT
/ Active Test / Control the Fuel Pump Duty.
(i) Operate the fuel pump using the active test function and
measure the voltage according to the value(s) in the table
below.
Standard Voltage:
TESTER
CONNECTION
TECHSTREAM
OPERATION
SPECIFIED
CONDITION
1 - 2
FPC Duty: 25%
3.2 to 4.05 V
FPC Duty: 80%
8.8 to 12.5 V
(j) Enter the following menus: Powertrain / Engine and ECT
/ Active Test / Control the Fuel Pump / Speed.
(k) Operate the fuel pump using the active test function and
measure the voltage according to the value(s) in the table
below.
Standard Voltage:
TESTER
CONNECTION
TECHSTREAM
OPERATION
SPECIFIED
CONDITION
1 - 2
ON (FPC Duty: 90%)
9.0 to 14.0 V
HINT:
GO TO STEP 16
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Co...
OK
NEXT
14.
CHECK HARNESS AND CONNECTOR (FUEL PUMP ECU - ECM)
(a) Disconnect the fuel pump ECU 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
R11-5 (FPC) - A24-52 (FPC)
Always
Below 1 Ω
R11-5 (FPC) or A24-52 (FPC) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
15.
REPLACE FUEL PUMP
(a) Replace the fuel pump
.
HINT:
Perform "Inspection After Repair" after replacing the fuel pump
.
NEXT
GO TO STEP 17
16.
REPLACE FUEL PUMP ECU
(a) Replace the fuel pump ECU
.
17.
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
(a) Check the fuel pump operation.
OK:
Malfunction has been repaired successfully.
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Co...
NG
REPLACE ECM
OK
END
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pump Co...
Last Modified: 9-16-2014
6.6 J
Doc ID: RM000003302056X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Injector Circuit; 2015 MY Tundra [08/2014 -
]
Fuel Injector Circuit
DESCRIPTION
The fuel injectors are located on the intake manifold. They inject fuel into the cylinders based on the signals
from the ECM.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1.
CHECK INJECTOR ASSEMBLY (POWER SOURCE)
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Injector C...
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