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E7J-A-2/60 ENGINE 17 IGNITION AND INJECTION 17 - 46 DIAGNOSING-INTERPRETING THE DEFECTS FUNCTIONAL BREAKDOWN OF THE OXYGEN PROBE Lack of coherence of the information received from the oxygen probe. DEFECT 30. Note down other functional defects. AFTER Check that there is no “false air” caused by the lack of watertightness along the exhaust If the car has been running for a long while in town, clean the oxygen probe. Check the connection and the condition of the oxygen probe connector. Check the heating resistance of the oxygen probe. Check, after setting the contact, the presence of +12V (after the actuating realy) at pin A Connect the 90-way terminal-tester instead of the calculator and check the insulation, alculator ♦ pin C of oxygen probe pin 80 of calculator ♦ pin D of oxygen probe. Remedy if necessary. Connect the 90-way terminal-tester instead of the calculator and check the insulation, ® pin B of oxygen probe. Remedy if necessary. If the incident persists, replace the oxygen probe. SUGGESTIONS |