Short Description
This manual is designed to assist the technician unfamiliar with Rober Bosch fuel injection systems in locating faults in the L-Jetronic system, isolating the component involved and testing the component for correct function. You will need a volt-ohmmeter and a pressure gauge as described in the Tool List. Electrical measurements are made at the terminals of the large plug at the end of the wiring harness after it is removed from the control unit, or at the terminals of the individual components themselves. Most components of this system cannot be repaired and will have to be replaced once you have determined them defective.
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Content
If you are already familiar with Bosch EFI systems and can identify and locate all the components in the vehicle, go directly to the Trouble-Shooting Chart to track down the faulty component according to the engine sympthom given. Then go to the Component Test Instructions for directions on testing the suspected component. Technicians who are experienced in the various tests on this vehicle model can go directly to the Test Chart where the individual test steps and values are given.
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