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GDI – Troubleshooting 13A-71 INSPECTION PROCEDURE 5 No initial combustion (starting impossible) Probable cause This is caused by incorrect fuel supply into the combustion chamber, and improper Malfunction of the fuel supply system Malfunction of the ignition system Malfunction of the engine-ECU <M/T> Malfunction of the engine-A/T-ECU <A/T> OK Check ignition timing while the engine is cranking. OK: Approx. 5 BTDC NG Check that the crank angle sensor and timing belt cover are proper- OK Measure at ignition coil connectors A-85, A-86, A-89, A-91. Connect the connector. Connect a timing light to the No. 1 terminal of each connector NG Check the ignition coil (incorporating power transitor) system. OK Measure low fuel pressure between the fuel pump (low pressure) NG Repair Check fuel leakage. (Refer to P.13A-125.) NG Repair OK NG Measure at injector driver connector A-52. Disconnect the connector, and measure at the connector side. Voltage between each of terminals 12, 21 and earth Check the injector driver system. NG OK Inspect engine start ability by cranking the engine while the OK Clean around the throttle valve. (Refer to P.13A-96*.) OK MUT- II Data list 79 Throttle position sensor (1st channel) (Refer to P.13A-99.) NG Check the throttle position sensor (1st channel) system. OK MUT- II Data list 21 Engine coolant temperature sensor (Refer to P.13A-99.) NG Check the engine coolant temperature sensor system. OK MUT- II Data list 22 Crank angle sensor (Refer to P.13A-99.) NG Check the crank angle sensor system. (Refer to P.13A-48, IN- Yes MUT- II Actuator test 07 Fuel pump (low pressure) (Refer to P.13A-105.) NG Check the fuel pump (low pressure) system. OK Does the camshaft rotate when the engine is cranking? No Check if the timing belt is broken or damaged. No MUT- II Data list 16 System voltage (Refer to P.13A-99.) NG Check the engine control relay and ignition switch-IG system. (Refer to P.13A-91, INSPECTION PROCEDURE 26.) OK MUT- II Self-Diag code Is a diagnosis code displayed? Yes Refer to P.13A-12, INSPECTION CHART FOR DIAGNOSIS Check system voltage while the engine is cranking. NG Check the battery. (Refer to GROUP 55 – Battery.) OK To the next page NOTE Refer to the ’99 SPACE STAR Workshop Manual (Pub. No. CMXE99E1) |