Home Auto Repair PEUGEOT 306/406 Common ECU Failures Service Manual

PEUGEOT 306/406 Common ECU Failures Service Manual

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Download PEUGEOT 306/406 Common ECU Failures Service Manual – PEUGEOT 306 1.4 / 1.8(16V) and 406 1.8(16V) MODELS FROM 1997 to 2002 – IDLE CONTROL PROBLEMS. SAGEM SL96 (3 row, 55 pin) ECU suffers from damage to idle control CAUSED BY DEFECTIVE COILS. Replacing ECU WITHOUT REPLACING COILS WILL RESULT IN NEW ECU FAILING WITHIN VERY SHORT TIME FRAME. Sagem SL96 Symptoms 1) Car suffers idle control problems manifested as rough running at idle and stalling at traffic lights. 2) Check engine light usually illuminates with coil pack fail and idle control fault codes. Diagnostic Checklist 1) Check fault codes – if fault code does not identify which coil has failed, REPLACE BOTH. Coil failure almost guarantees ECU failure but run car with new coil(s) – if idle control is correct – and idle control fault code does not reappear then ECU has probably survived