Wagoneer L4-150 2.5L VIN E TBI (1990)
Fuel Injector: Testing and Inspection
Fuel Injector Test
Injector Test
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Disconnect the injector wire connector from the injector.
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Place an ohmmeter on the injector terminals.
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Resistance reading should be approximately 1.2 Ohms.
General Information
The DRB II and Jeep/Eagle adapter can be used to determine certain fault codes in the injector circuit. To read fault codes "SYSTEM TESTS" must
be selected from the main menu. The DRB II screens will provide instructions to prompt the technician through a series of functional tests. Any fault
codes will be displayed on the DRB II screen.
Fault code number 1012 indicates the fuel injector crcuits require testing. Possible problems include an open in the injector voltage supply wire from
the fuel pump relay, an open in the injector control wire, the injector control wire shorted to ground, a faulty fuel injector or ECU.
