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MPI - Troubleshooting 13A-15 Code No. P0105 Barometric pressure sensor system Probable cause Inspection Range 2 seconds after the ignition switch is set to the “ON” position, or after the completion of start of engine. Evaluation Conditions The sensor output voltage is more than 4.5 V for 4 seconds (Equivalent to air pressure of more than 114 kPa) or The sensor output voltage is less than 0.2 V for 4 seconds (Equivalent to air pressure of less than 5 kPa) D Barometric pressure sensor malfunction D Barometric pressure sensor circuit disconnection, short-circuit, or connector contact defect D Engine-ECU malfunction OK To the next page OK Intermittent malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.) OK MUT-II Data list No. 25 Barometric pressure sensor (Refer to P.13A-103.) NG Replace engine-ECU. OK Check the harness between the air flow sensor and engine-ECU. Check the earth wire for disconnection and damage. NG Repair (2) 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. 25 Barometric pressure sensor (Refer to P.13A-103.) NG Replace engine-ECU. OK Check the harness between the air flow sensor and engine-ECU. Check for short-circuit of the power cable. NG Repair NG Check the following connector: C-115 NG Repair OK Check and repair the harness between the air flow sensor and engine-ECU. Check for disconnection of the power cable. NG Repair OK Measure at the B-31 air flow sensor connector. Disconnect the connector to measure at the harness side (1) Voltage between terminal No. 1 and earth (Ignition switch: ON) OK: 4.9 - 5.1 V (2) Resistance between terminal No. 5 and earth. OK: Less than 2 Ω (1) NG Measure at the C-115 engine-ECU connector. Measure the engine-ECU terminal voltage. D Ignition switch: ON D Voltage between terminal No. 81 and earth OK: 4.9 - 5.1 V OK Check the following connector: C-115 NG Check the following connector: B-31 NG Repair MUT-II Data list No. 25 Barometric pressure sensor (Refer to P.13A-103.) OK Intermittent malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.) |