Toyota Tundra (2015 year). Manual — part 1689
OK
OK
(a) Disconnect the fuel injector connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the
table below.
Standard voltage:
CYLINDER
TESTER
CONNECTION
SWITCH
CONDITION
SPECIFIED
CONDITION
No. 1
H1-2 - Body
ground
Ignition switch
ON
11 to 14 V
No. 2
F1-2 - Body
ground
Ignition switch
ON
11 to 14 V
No. 3
H2-2 - Body
ground
Ignition switch
ON
11 to 14 V
No. 4
F2-2 - Body
ground
Ignition switch
ON
11 to 14 V
No. 5
H3-2 - Body
ground
Ignition switch
ON
11 to 14 V
No. 6
F3-2 - Body
ground
Ignition switch
ON
11 to 14 V
No. 7
H4-2 - Body
ground
Ignition switch
ON
11 to 14 V
No. 8
F4-2 - Body
ground
Ignition switch
ON
11 to 14 V
NG
GO TO STEP 4
2.
INSPECT FUEL INJECTOR
(a) Inspect the fuel injector
.
NG
REPLACE FUEL INJECTOR
3.
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR - ECM)
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Injector...
(a) Disconnect the fuel injector connector.
(b) Disconnect the D74 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
CYLINDER
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
No. 1
H1-1 - Body ground
Always
10 kΩ or higher
H1-1 - D74-86 (#10)
Always
Below 1 Ω
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
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE ECM
4.
INSPECT FUSE (INJ, IG2 MAIN)
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Injector...
OK
(a) Remove the INJ fuse and IG2 MAIN fuse from the engine
room relay block.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
INJ fuse
Always
Below 1 Ω
IG2 MAIN fuse
Always
Below 1 Ω
NG
CHECK FOR SHORT IN ALL HARNESSES AND
CONNECTORS CONNECTED TO FUSE AND
REPLACE FUSE
5.
INSPECT INTEGRATION RELAY (IG2)
(a) Inspect the integration relay
.
NG
REPLACE INTEGRATION RELAY
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR
(INTEGRATION RELAY - INJECTOR ASSEMBLY)
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Injector...
Last Modified: 9-16-2014
6.6 J
Doc ID: RM000003PPQ00GX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pressure Switching System; 2015 MY Tundra
[08/2014 - ]
Fuel Pressure Switching System
DESCRIPTION
For example, when starting the engine and during heavy loads while using E85 fuel, the fuel pressure
switching valve switches to the high pressure side.
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: Fuel Pressur...
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