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MPI - Troubleshooting 13A-99 Inspection Procedure 31 Intercooler water spray lamp system Probable cause The engine-ECU illuminates the intercooler water spray lamp when the intercooler water spray switch (automatic) is ON. D Intercooler water spray lamp bulb dead D Ignition switch malfunction D Intercooler water spray lamp circuit disconnection, short-circuit, or connector contact defect D Intercooler water spray switch circuit disconnection, short-circuit, or connector contact defect D Engine-ECU malfunction OK Check and repair the harness between the combination meter and engine-ECU. Check for damage of the signal cable. NG OK Replace the intercooler water spray lamp. Check whether intercooler water spray lamp bulb is dead. (Refer to GROUP 54 - combination meter.) NG NG Repair OK Check and repair the harness between the combination meter and engine-ECU. Check for disconnection and short-circuit of the signal cable. Check the following connector: C-02, C-130 OK Measure at the C-122 engine-ECU connector. Disconnect the connector to measure at the harness side. D Ignition switch: ON D Voltage between terminal No. 35 and earth OK: System voltage OK Check the Inspection Procedure 30: Intercooler water spray circuit system. (Refer to P.13A-97.) Check the intercooler water spray lamp illumination. Disconnect the C-122 engine-ECU connector, and earth the terminal No. 35. D Ignition switch: ON OK: The intercooler water spray lamp illuminates. NG NG Measure at the C-01 combination meter connector. Disconnect the connector to measure at the harness side. D Ignition switch: ON D Voltage between terminal No. 9 and earth OK: System voltage OK NG Repair OK Check the following connectors: C-213, C-210, C-201, C-29 <L.H. drive vehicle> NG Repair Check the harness between the combination meter and ignition switch. Check for damage of the power cable. OK Check the harness between the combination meter and ignition switch. Check for disconnection and short-circuit of the power cable. Repair Replace the ignition switch. OK Check the following connectors: C-213, C-210, C-201, C-01, C-29 <L.H. drive vehicles> NG Repair OK Check the following connectors: C-02, C-122, C-130 NG Repair NG |