Circuit Description
The engine control module (ECM) enables the appropriate fuel injector pulse for each cylinder. Ignition voltage is supplied to the fuel injectors. The ECM controls each fuel injector by grounding the control circuit via a solid state device called a driver.
Diagnostic Aids
| • | The ODD INJ fuse and the EVEN INJ fuse supplies power to the fuel injectors and the ignition coil/modules. If the ODD INJ fuse is open or the EVEN INJ fuse is open and a short to ground cannot be located, refer to Electronic Ignition (EI) System Diagnosis . |
| • | Performing the Fuel Injector Coil Test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test . |
| • | If the condition is intermittent, refer to Intermittent Conditions . |
Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: Engine Controls Schematics Connect End View Reference: Engine Controls Connector End Views or Engine Control Module Connector End Views | ||||
1 | Did you perform the Diagnostic System Check-Vehicle? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 | Is DTC P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P0279, P0280, P0282, or P0283 set? | -- | Go to DTC P0201, P0202, P0203, P0204, P0205, P0206, P0207, or P0208 or DTC P0261, P0264, P0267, P0270, P0273, P0276, P0279, or P0282 or DTC P0262, P0265, P0268, P0271, P0274, P0277, P0280, or P0283 | Go to Step 3 |
3 |
Does the test lamp illuminate? | -- | Go to Step 4 | Go to Diagnostic Aids |
4 | Repair the short to ground in the ignition 1 voltage circuit of the fuel injectors. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 5 | -- |
5 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
