| Last Modified: 11-29-2007 | 1.6 J | |
| Service Category: Engine/Hybrid System | Section: Engine Control | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM00000330200BX |
| Title: 2UZ-FE ENGINE CONTROL: SFI SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
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 FUEL INJECTOR ASSEMBLY (POWER SOURCE) |
(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 No. |
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|---|
|
No. 1 |
D60-1 - Ground |
Ignition switch ON |
11 to 14 V |
|
No. 2 |
D67-1 - Ground |
Ignition switch ON |
11 to 14 V |
|
No. 3 |
D61-1 - Ground |
Ignition switch ON |
11 to 14 V |
|
No. 4 |
D66-1 - Ground |
Ignition switch ON |
11 to 14 V |
|
No. 5 |
D62-1 - Ground |
Ignition switch ON |
11 to 14 V |
|
No. 6 |
D65-1 - Ground |
Ignition switch ON |
11 to 14 V |
|
No. 7 |
D63-1 - Ground |
Ignition switch ON |
11 to 14 V |
|
No. 8 |
D64-1 - Ground |
Ignition switch ON |
11 to 14 V |
|
|
2. |
INSPECT FUEL INJECTOR ASSEMBLY |
(a) Inspect the fuel injector
.
|
|
3. |
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) |
(a) Disconnect the fuel injector connector.
(b) Disconnect the 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 |
D60-2 - Body ground |
Always |
10 kΩ or higher |
|
D60-2 - D56-86 (#10) |
Always |
Below 1 Ω |
|
|
No. 2 |
D67-2 - Body ground |
Always |
10 kΩ or higher |
|
D67-2 - D56-109 (#20) |
Always |
Below 1 Ω |
|
|
No. 3 |
D61-2 - Body ground |
Always |
10 kΩ or higher |
|
D61-2 - D56-85 (#30) |
Always |
Below 1 Ω |
|
|
No. 4 |
D66-2 - Body ground |
Always |
10 kΩ or higher |
|
D66-2 - D56-108 (#40) |
Always |
Below 1 Ω |
|
|
No. 5 |
D62-2 - Body ground |
Always |
10 kΩ or higher |
|
D62-2 - D56-84 (#50) |
Always |
Below 1 Ω |
|
|
No. 6 |
D65-2 - Body ground |
Always |
10 kΩ or higher |
|
D65-2 - D56-107 (#60) |
Always |
Below 1 Ω |
|
|
No. 7 |
D63-2 - Body ground |
Always |
10 kΩ or higher |
|
D63-2 - D56-83 (#70) |
Always |
Below 1 Ω |
|
|
No. 8 |
D64-2 - Body ground |
Always |
10 kΩ or higher |
|
D64-2 - D56-106 (#80) |
Always |
Below 1 Ω |
|
|
4. |
INSPECT FUSE (INJ, IG2 MAIN) |
(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 fuse |
Always |
Below 1 Ω |
|
|
5. |
INSPECT INTEGRATION RELAY (IG2) |
(a) Inspect the integration relay
.
|
|
|