1251 - Fuel Injectors 1 and 3

Engine Management:

DME Connector View:

1. With the ignition switch in the "OFF" position, disconnect the Digital Motor Electronic (DME) control unit harness connector (control unit is located in the E-Box). See COMPONENT LOCATIONS.
2. Connect a FUSED jumper between brown wire (terminal 27), of the DME control unit connector and ground.
3. Turn the ignition switch to the run position and MOMENTARILY connect a FUSED jumper between brown/white wire (terminal 3), of the DME control unit connector and ground.
4. Listen and feel fuel injectors 1-3.

^ If both fuel injector valves click, remove fused jumpers. Replace the DME control unit.
^ If one or more fuel injection valves do not click, remove FUSED jumper at brown/white wire (terminal 3).

5. With the ignition switch in the OFF position, disconnect harness connectors from fuel injector valves 1 and 3.
6. Turn the ignition switch to the run position and measure the voltages of each fuel injector connector.

^ Red/White wire (terminal 1) and ground = Battery voltage. If not check wire to the DME main relay for open.
^ Brown/white (terminal 2) and red/white wire (terminal 1) = 0 volts. If not check Brown/white wire to terminal 3 of DME control unit connector for a short to ground.
^ Brown/white wire (terminal 2) and ground = 0 volts. If not check wire to terminal 3 of the DME control unit connector for a short to voltage.

7. Reconnect a FUSED jumper between terminal 3 of the DME control unit harness connector and ground. Measure the voltage at the fuel injector connector.

^ Brown/white (terminal 2) and red/white wire (terminal 1) = battery voltage. If not check brown/white wire to terminal 3 of connector for an open.
^ If all the voltages are correct, remove fused jumpers and replace the defective fuel injector(s).