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...