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
 PROCEDURE
| 1. |
INSPECT FUEL INJECTOR ASSEMBLY (POWER SOURCE) |
 (a) Disconnect the fuel injector assembly 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 - Ground |
Ignition switch ON | 11 to 14 V | |
No. 2 | F1-2 - Ground |
Ignition switch ON | 11 to 14 V | |
No. 3 | H2-2 - Ground |
Ignition switch ON | 11 to 14 V | |
No. 4 | F2-2 - Ground |
Ignition switch ON | 11 to 14 V | |
No. 5 | H3-2 - Ground |
Ignition switch ON | 11 to 14 V | |
No. 6 | F3-2 - Ground |
Ignition switch ON | 11 to 14 V | |
No. 7 | H4-2 - Ground |
Ignition switch ON | 11 to 14 V | |
No. 8 | F4-2 - Ground |
Ignition switch ON | 11 to 14 V |
| NG |
 | GO TO STEP 4 |
|
OK |
 | |
| 2. |
INSPECT FUEL INJECTOR ASSEMBLY | (a) Inspect the fuel injector assembly (See page
 ). HINT: Perform "Inspection After Repair" after replacing the fuel injector assembly (See page
).
| NG | |
REPLACE FUEL INJECTOR ASSEMBLY |
|
OK | |
| |
| 3. |
CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) |
 (a) Disconnect the fuel injector assembly 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 | H1-1 - Ground |
Always | 10 kΩ or higher | |
H1-1 - D74-86 (#10) | Always |
Below 1 Ω | |
No. 2 | F1-1 - Ground |
Always | 10 kΩ or higher | |
F1-1 - D74-109 (#20) |
Always | Below 1 Ω | |
No. 3 | H2-1 - Ground |
Always | 10 kΩ or higher | |
H2-1 - D74-85 (#30) | Always |
Below 1 Ω | |
No. 4 | F2-1 - Ground |
Always | 10 kΩ or higher | |
F2-1 - D74-108 (#40) |
Always | Below 1 Ω | |
No. 5 | H3-1 - Ground |
Always | 10 kΩ or higher | |
H3-1 - D74-84 (#50) | Always |
Below 1 Ω | |
No. 6 | F3-1 - Ground |
Always | 10 kΩ or higher | |
F3-1 - D74-107 (#60) |
Always | Below 1 Ω | |
No. 7 | H4-1 - Ground |
Always | 10 kΩ or higher | |
H4-1 - D74-83 (#70) | Always |
Below 1 Ω | |
No. 8 | F4-1 - Ground |
Always | 10 kΩ or higher | |
F4-1 - D74-106 (#80) |
Always | Below 1 Ω |
| OK |
| REPLACE ECM |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
| 4. |
INSPECT FUSES (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 MAIN fuse | Always |
Below 1 Ω |
| NG |
| CHECK FOR SHORT IN ALL HARNESSES AND CONNECTORS CONNECTED TO FUSE AND REPLACE FUSE |
|
OK | |
| |
| 5. |
INSPECT INTEGRATION RELAY (IG2) | (a) Inspect the integration relay (See page
).
| OK | |
REPAIR OR REPLACE HARNESS OR CONNECTOR (INTEGRATION RELAY - FUEL INJECTOR ASSEMBLY) |
| NG |
| REPLACE INTEGRATION RELAY | | 
