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MPI - Troubleshooting 13A-83 OK Check and repair the harness and connector of the ignition switch-IG1 output signal for short-circuit. NG OK Check the harness between the ignition switch and engine-ECU. Check for disconnection and short-circuit of the output cable. Repair OK OK NG Check the ignition switch. (Refer to GROUP 54 - Ignition switch.) Repair Measure at the C-115 engine-ECU connector. Measure the engine-ECU terminal voltage. D Ignition switch: ON D Voltage between terminal No. 82 and earth OK: System voltage NG Check the following connector: C-115 NG Replace the ignition switch. OK From the previous page OK NG Check the following connector: C-126 Repair OK NG Repair Check the following connectors: C-129, C-209, C-210, C-201 Check and repair the harness between the engine control relay and engine-ECU. Check for disconnection and short-circuit of the earth cable. OK Repair (1) NG Check the following connectors: C-122, B-11X NG OK NG Replace the engine-ECU. OK NG Check the harness between the ignition switch and engine-ECU. Check for damage of the output cable. Repair (2) NG Check the following connectors: C-122, C-115, C-129, C-209, C-210, C-201 NG Intermittent malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.) OK OK Repair Check the trouble symptoms. OK To the next page Measure at the C-122 engine-ECU connector. Measure the engine-ECU terminal voltage. (1) Voltage between terminal No. 38 and earth (Ignition switch: OFF) OK: System voltage (2) Voltage between terminal No. 38 and earth (Ignition switch: ON) OK: 1 V or less |