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MPI - Troubleshooting 13A-27 Code No. P0136 Oxygen sensor (rear) system Probable cause Inspection Range More than 3 minutes passed after completion of start of engine D The engine coolant temperature is approximately more than 80_C. D The engine speed is more than 1,200 r/min. D The volumetric efficiency is 25% or more. Evaluation Conditions When 5 V is applied to the oxygen sensor (rear), the output voltage is more than 4.5 V. D Oxygen sensor (rear) malfunction D Oxygen sensor (rear) circuit disconnection, short-circuit, or connector contact defect. D Engine-ECU malfunction OK To the next page OK Check the harness between the oxygen sensor (rear) and engine-ECU. Check for damage of the output wire. NG Repair NG OK Check the following connector: C-115 Repair (2) NG Check the oxygen sensor (rear). (Refer to P.13A-135.) NG Replace the oxygen sensor (rear). OK Check the harness between the oxygen sensor (rear) and engine-ECU. Check for damage of the earth wire. NG Repair OK Measure at the D-22 oxygen sensor (rear) connector. Using the test harness (MB998464), connect the connector, and measure at the pickup harness. D Engine: After warm-up (1) Voltage between terminal No. 2 and earth OK: Less than 0.5 V (2) Voltage between terminal No. 1 and the earth D During rapid racing OK: 0 and 600 - 1,000 mV alternate. (1) NG Check the following connector: C-115 NG Repair OK Intermittent malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.) OK MUT-II Data list No. 59 Oxygen sensor (rear) (Refer to P.13A-105.) NG Replace engine-ECU. OK Check the harness between the oxygen sensor (rear) and engine-ECU. Check for disconnection and damage of the earth wire. NG Repair OK Measure at the D-22 oxygen sensor (rear) connector. Disconnect connector to measure at the harness side D Resistance between terminal No. 2 and earth. OK: Less than 2 Ω NG Check the following connector: C-115 NG Repair NG Check the following connector: D-22 NG Repair MUT-II Data list No. 59 Oxygen sensor (rear) (Refer to P.13A-105.) OK Intermittent malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.) |