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E7J-A-2/60 ENGINE 17 IGNITION AND INJECTION 17 - 38 DIAGNOSING-INTERPRETING THE DEFECTS OXYGEN PROBE HEATING CIRCUIT (heating oxygen probe command) 2. Short-circuit at mass along the way to pin 63 of calculator (heating oxygen probe command) 3. Open circuit at 12 V along the way to pin 63 of calculator (heating oxygen probe command) 4. Breakdown of the probe fuse heating power. DEFECT Conditions of breakdown detection by the calculator: SUGGESTIONS Check the connection and the condition of the oxygen probe connector Check the heating resistance of the oxygen probe. Check the presence of +12V at pin A of the oxygen probe. Connect the 90-way terminal-tester instead of the calculator and check the insulation, −> pin B of the oxygen probe. Remedy if necessary. The problem is not yet solved! Consequently, the injection calculator must be changed. electric shock. 22. Erase defects memorized by the computer. AFTER REPAIR |