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MPI - Troubleshooting 13A-31 Code No. P0202 No. 2 injector system Probable cause Inspection Range The engine speed is 50 - 1,000 r/min. D The throttle position sensor output voltage is 1.15 V or less. D MUT-II forced drive (actuator test) is not being carried out. Evaluation Conditions Surge voltage at injector coil is not detected for 2 seconds. D No. 2 injector malfunction D No. 2 injector circuit disconnection, short-circuit, or connector contact defect D Engine-ECU malfunction OK Intermittent malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.) OK Measure the signal waveform at the C-126 engine-ECU connector (using an analyzer). Engine: Idling D Voltage between terminal No. 1 and earth OK: The waveform shown on P.13A-119 (Inspection Proce- dure Using Analyzer) should be output. NG Replace the engine-ECU. OK Check the harness between the No. 2 injector and engine-ECU. Check for disconnection, short-circuit and damage of the output cable. NG Repair OK Check the following connector: C-126 NG Repair OK Check the harness between the resis- tor (for injector) and engine control relay. Check for damage of the power cable. NG Repair OK Check and repair the harness between the resistor (for injector) and engine control relay. Check for disconnection and short-circuit of the power cable. NG OK Check the harness between the No. 2 injector and resistor (for injector). Check for disconnection and short-circuit of the power cable. Repair NG OK Check the resistor. (Refer to P.13A-138.) Repair OK Check the harness between the No. 2 injector and resistor (for injector). Check for damage of the power cable. NG Repair OK Measure at the B-26 No. 2 injector connector. Disconnect the connector to measure at the harness side. D Ignition switch: ON D Voltage between terminal No. 1 and earth OK: System voltage NG Check the following connectors: B-11X, B-138, C-108 NG Repair OK Measure at the B-26 No. 2 injector connector. Disconnect the connector to measure at the injector side. D Resistance between terminal No. 1 and terminal No. 2 OK: 2 - 3 Ω NG Replace the No. 2 injector. NG Check the following connector: B-26 NG Repair MUT-II Actuator test No. 02: No. 2 injector OK: The idling state changes. OK Intermittent malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.) |