GDI -Troubleshooting 13A-175 OK NG Air is sucked in the air intake system, or EGR gas leaks. DBroken intake manifold gasket DDamaged air intake hose DDamaged vacuum hose DFaulty EGR valve seat Check the trouble symptoms. OK Check the following items in that order. DCheck the sparkplug DCheck the exhaust gas emission control system DCheck the EGR control system DCheck the compression pressure DCheck if foreign materials (water, kerosine,etc.) got into fuel. OK Check ignition coil spark for each cylinder. 1. Remove the ignition coil. 2. Install a new sparkplug to the removed ignitioncoil. 3. Disconnect the injector intermediate connector. Caution Never touch the connector terminal as approx. 100 V is applied to the injector, or you are seriously injured. 4. Earth the sparkplug electrodesecurely. 5. Check that the sparkplug igniteswhen theengine is cranked.NGReplace the ignition coil. Clean around the throttle valve. (Refer to P.13A-220.) OK Check the ignition timing. (Refer to GROUP 11A - Engine Adjustment.)NGCheck that the crankanglesensor andtiming beltcover are properly installed. OK MUT- IIData list 68 EGR valve (Refer to P.13A-198.)NGCheck the EGR valve system (Refer to P.13A-196, Inspection procedure 35.) OK MUT- IIData list 14 Throttle position sensor (2nd channel) After warming-up, let theengine run at idlingwith no load. OK: When idling, 3,900 - 4,800 mVNGDClean around the throttle valve. (Refer to P.13A-220) DAdjust the throttle position sensor (Refer to P.13A-220.) OK MUT- IIData list 67 Stoplampswitch (Refer to P.13A-198.)NGCheck the stoplampswitch system (Refer to P.13A-195, Inspection procedure 32.) OK MUT- IIData list 28 A/C switch (Refer to P.13A-198.)NGCheck the A/C switch and A/C relay system (Refer to P.13A-194, Inspection procedure 31.) OK MUT- IIData list 27 Power steering oil pressure switch (Refer to P.13A-198.)NGCheck the power steering oil pressure switch system (Refer to P.13A-194, Inspection procedure 30.) From the previouspage OK MUT- IIData list 31 Small lampswitch (Refer to P.13A-198.)NGCheck the smalllampswitch system (Refer to P.13A-195, Inspection procedure 33.) www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-176 Inspection procedure 8 Idling speed is high or low (Improper idling speed) Probable cause The cause is probably that the intake airamount during idling is too great or too small.DMalfunction of the electronic-controlled throttle valve system DMalfunction of the throttle body OK DClean around the throttle valve. (Refer to P.13A-220.) DAdjust the throttle position sensor (Refer to P.13A-220.) OK MUT- IIData list 67 Stoplampswitch (Refer to P.13A-198.)NGCheck the stoplampswitch system (Refer to P.13A-195, Inspection procedure 32.) OK MUT- IIData list 28 A/C switch (Refer to P.13A-198.)NGCheck the A/C switch and A/C relay system (Refer to P.13A-194, Inspection procedure 31.) OK MUT- IIData list 21 Engine coolant temperature sensor (Refer to P.13A-198.)NGCheck theengine coolant temperaturesensor system (Refer to P.13A-138, code No.21.) OK MUT- IIData list 26 Acceleratorpedal positionswitch (Refer to P.13A-198.)NGCheck the acceleratorpedal positionswitch system (Refer to P.13A-192, Inspection procedure 28.) OK MUT- IIActuator Test 08 Purge control solenoid valve (Refer to P.13A-203.)NGCheck the purge control solenoid valve system (Refer to P.13A-197, Inspection procedure 36.) MUT- IISelf-Diag Code Is a diagnosis code set?YESRefer to P.13A-130, INSPECTION CHART FOR DIAGNOSIS CODES. NO MUT- IIData list 79 Throttle position sensor (1st channel) (Refer to P.13A-198.)NGCheck the throttle valve position feedback system (Refer to P.13A-162, code No.92.) www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-179 OK Check the following items in that order. DCheck the sparkplug DCheck the compression pressure DCheck if foreign materials (water, kerosine,etc.) got into fuel. OK MUT- IIData list 68 EGR valve (Refer to P.13A-198.)NGCheck the EGR valve system (Refer to P.13A-196, Inspection procedure 35.) OK MUT- IIData list 28 A/C switch (Refer to P.13A-198.)NGCheck the A/C switch and A/C relay system (Refer to P.13A-194, Inspection procedure 31.) OK MUT- IIData list 27 Power steering oil pressure switch (Refer to P.13A-198.)NGCheck the power steering oil pressure switch system (Refer to P.13A-194, Inspection procedure30.) From the previouspage NO Check the ignition timing. (Refer to GROUP 11A - Engine Adjustment.)OKCheck that the crankanglesensor andtiming beltcover are properly installed. NG Check ignition coil spark for each cylinder. 1. Remove the ignition coil. 2. Install a new sparkplug to the removed ignitioncoil. 3. Disconnect the injector intermediate connector. Caution Never touch the connector terminal as approx. 100 V is applied to the injector, or you are seriously injured. 4. Earth the sparkplug electrodesecurely. 5. Check that the sparkplug igniteswhen theengine is cranked.NGReplace the ignition coil. OK MUT- IIData list 14 Throttle position sensor (2nd channel) After warming-up, let theengine run at idlingwith no load. OK: 3,900 - 4,800 mVNGDClean around the throttle valve. (Refer to P.13A-220) DAdjust the throttle position sensor (Refer to P.13A-220.) OK MUT- IIData list 34 Air flow sensor reset signal (Refer to P.13A-198.)NGCheck the air flow sensor system (Refer to P.13A-133, code No.12.) OK Does theenginestall right after the acceleratorpedal is released?YESClean around the throttle valve. (Refer to P.13A-220.) OK MUT- IIData list 31 Small lampswitch (Refer to P.13A-198.)NGCheck the smalllampswitch system (Refer to P.13A-195, Inspection procedure 33.) www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-187 Inspection procedure 20 Idling speed is improper when A/C is operating (A/C switch 2 signal) Probable cause The A/C-ECU judges ifloadcaused by air conditioner ishigh or low, and converts it to A/C switch 2 signal to send the engine-A/T-ECU it. Based on this signal, the engine-A/T-ECU operates the throttle control servo to control the idle-up speed.DMalfunction of the A/C control system DOpen or short circuit, or loose connector contact DMalfunction of the engine-A/T-ECU OK Check the trouble symptoms. Check the harness wire between the engine-A/T-ECU and the A/C-ECU.OKCheck the A/C system (Refer to GROUP 55 - Troubleshooting.) NGNG RepairOK Replace the engine-A/T-ECU. Check the following connectors: D-120, D-131, E-13 RepairNG Inspection procedure 21 A/C condenser fan is inoperative Probable cause The fan motor relay is controlled by turning on and off the power transistor in the engine-A/T-ECU.DMalfunction of the A/C condenser fan relay. DMalfunction of the A/C condenser fan motor. DOpen or short circuit, or loose connector contact DMalfunction of the engine-A/T-ECU NG Replace the engine-A/T-ECU. OK NG RepairOK Check the trouble symptoms. Check the following connector: D-119 Measure at the engine-A/T-ECU connector D-119. DDisconnect the connector, and measure at the harness side. DCheck condition of the condenser fan. (Ignition switch: ON) OK: Fan stops. DThe voltage between terminal 18 and earth (Ignition switch: ON) OK: System voltage DConnect terminal 18 to earth. (Ignition switch: ON) OK: A/C condenser fan rotates.NGCheck the condenser fan circuit. (Refer to ELECTRICAL WIRING.) www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-189 Inspection procedure 24 Engine-A/T-ECU power supply and earth circuit system Probable cause The cause is probably the malfunction of the engine-A/T-ECU, or the malfunctions listed at right.DOpen circuit or short-circuited harness wire in the engine-A/T-ECU power supply circuit. DOpen circuit or short-circuited harness wire to earth in the engine-A/T-ECU. DMalfunction of the engine-A/T-ECU OK(5) NG OK Check the trouble symptoms. NG Repair (2), (3) NG Check the harness wire between the engine-A/T-ECU and the battery, and repair if necessary. OK Check the trouble symptoms. OK NG Check the harness wire between the engine-A/T-ECU and the ignition switch. Ignition switch check (Refer to GROUP 54 - Ignition Switch.) (4) NG Measure at engine-A/T-ECU connectors D-120, D-121. DDisconnect the connector, and measure at the harness side. (1) The voltage between terminal 98 and earth. (Ignition switch: ON) OK: System voltage (2) The voltage between terminal 49 and earth. OK: System voltage (3) The voltage between terminals 41 and 47 and earth. (Ignition switch: ON) OK: System voltage (When terminal 49 was connected to earth) (4) The continuity between terminals 42 and 48 and earth. OK: Continuity (5) The voltage between terminal 66 and earth OK: System voltage(1) NGCheck the following connectors: D-208, D-223 , E-13NG Repair OK Check the following connectors: D-120, D-121 NG Replace the engine-A/T-ECU. OK Check the trouble symptoms.Repair NG NG RepairCheck the following connectors: D-27, D-31 , D-223 , E-13 NG Check the following connector: D-128Repair NG Check the trouble symptoms. NG Check the harness wire between the engine-A/T-ECU and theengine control relay, and repair if necessary. OK Check the following connector: D-14Repair NG Check the trouble symptoms. NG Check the harness wire between the engine-A/T-ECU and earth, and repair if necessary. www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-190 Inspection procedure 25 Engine control relay, ignition switch-IG system Probable cause When an ignition switch ON signal is input to the engine-A/T-ECU, the engine-A/T-ECU turns the control relay ON. This causes system voltage to be supplied to the engine-A/T-ECU, sensors, and actuators.DMalfunction of the ignition switch DMalfunction of the control relay. DOpen circuit or short-circuited harness wire in the engine controlrelay circuit. DMalfunction of the engine-A/T-ECU Check the harness wire between the battery and theengine controlrelay, and repair if necessary. Check the engine-A/T-ECU power supply and earth circuit. (Refer to P.13A-189, Inspection procedure 24.)OK OK Measure at control relay connector B-25X. DDisconnect the connector, and measure at the harness side. DThe voltage between 2, 3 and earth OK: System voltageNG Check the control relay. (Refer to P.13A-227.)NG Replace Inspection procedure 26 Injector driver relay system Probable cause When an ignition switch ON signal is input to the engine-A/T-ECU, the engine-A/T-ECU turns the injector driver relay ON. This causes system voltage to be supplied to the injector driver.DMalfunction of the injector driver relay. DOpen or short circuit, or loose connector contact DMalfunction of the engine-A/T-ECU OK Check the trouble symptoms. OK Check the trouble symptoms. OK Check the trouble symptoms. Check the injector driver relay (Refer to P.13A-227.)NG Replace OK (1) NG Check the harness wire between the injector driver relay and the battery, and repair if necessary. (2)NG Check the following connectors: D-208, D-223 , E-13 OK Check the trouble symptoms. NG Check the harness wire between the injector driver relay and the ignition switch, and repair if necessary. OK Measure at engine-A/T-ECU connector D-119. DDisconnect the connector, and measure at the harness side. DThe voltage between terminal 6 and earth (Ignition switch: ON) OK: System voltageNGCheck the following connector: B-28X NG Check the harness wire between the injector driver relay and the engine-A/T-ECU, and repair if necessary. OK Check the following connector: D-119 NG Measure at injector driver connector B-121. DConnect the connector. DThe voltage between terminal 4, 12, 21 and earth (Ignition switch: ON) OK: System voltageNGCheck the following connector: B-28X OK Check the injector driver system. (Refer to P.13A-196, Inspection procedure 34.) NG Check the harness wire between the injector driver relay and the injector driver, and repair if necessary.NG Repair NG Repair NG Repair NG Repair Measure at the injector driver relay connector B-28X. DDisconnect the connector, and measure at the harness side. (1) The voltage between terminal 3 and earth OK: System voltage (2) The voltage between terminal 4 and earth (Ignition switch: ON) OK: System voltage www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-193 Inspection procedure 29 Fuel pump (low pressure) system Probable cause The engine-A/T-ECU turns on the fuelpumprelay while theengine iscranking or running, and supplies power source to the fuelpump(low pressure).DMalfunction of the fuel pumprelay DMalfunction of the fuel pump(low pressure) DImproper connector contact,opencircuit or short-circuited harness wire DMalfunction of the engine-A/T-ECU Check the ignition switch (Refer to GROUP54 - Ignition Switch.) NG Repair OK OK NG OK Check the trouble symptoms.NGReplace the fuel pump(low pressure). NG Replace the engine-A/T-ECU.OKRepair OK Normal NG Repair NG Check the harness wire between the fuel pumprelay and the fuelpump (low pressure). NG (1) NG NG NG Check the harness wire between the fuel pump(low pressure) and earth, and repair if necessary. (2) NG NG NG NG Repair OK OK Check the following connector: G-12NG Repair Check the trouble symptoms. Check the following connector : F-11 OK Check the trouble symptoms. Check the following connectors: B-27X, D-124, E-17, F-11Measure at fuel pump(low pressure) connector G-12. DDisconnect the connector, and measure at the harness side. (1) The voltage between terminal 5 and earth (Ignition switch: ON) OK: System voltage (2) The continuity between terminal 4 and earth OK: Continuity Check the trouble symptoms. OK Measure at the engine-A/T-ECU connector D-119. DDisconnect the connector, and measure at the harness side. DShort circuit between terminal 21 and earth (Ignition switch: ON) OK: The fuel pump operates. (Its operation sound can be heard.)OKCheck the following connector : D-119 OK Measure at the engine-A/T-ECU connector D-119. DDisconnect the connector, and measure at the harness side. DThe voltage between terminal 21 and earth (Ignition switch: ON) OK: System voltageNGCheck the harness wire between the fuel pumprelay and the engine-A/T-ECU, and repair if necessary. Check the harness wire between the fuel pumprelay and the ignition switch. OK Check the trouble symptoms. Check the following connectors: D-208, D-213, E-10Measure at the fuel pumprelay connector B-27X. DDisconnect the connector, and measure at the harness side. DThe voltage between terminal 3, 4 and earth (Ignition switch: ON) OK: System voltage OK Check the fuelpumprelay (Refer to P.13A-227.)NG Replace MUT- IIActuator Test 07 Fuel pump (Refer to P.13A-203.) Repair www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-194 Inspection procedure 30 Power steering fluid pressure switch system Probable cause The presence or absence of power steeringload is input to the engine-A/T-ECU. Based on this signal, the engine-A/T-ECU controls the throttle control servo so that idlespeed increases when the power steering is in operation.DMalfunction of the power steering fluid pressure switch. DImproper connector contact,opencircuit or short-circuited harness wire DMalfunction of the engine-A/T-ECU OK Measure at power steering fluid pressure switch connector B-51. DDisconnect the connector, and measure at the harness side. DThe voltage between terminal 1 and earth (Ignition switch: ON) OK: System voltageNGCheck the following connector: D-120NG Repair OK Check the trouble symptoms. NG Check the harness wire between the engine-A/T-ECU and the power steering fluid pressure switch, and repair if necessary.OK Check the following connector: B-51NG Repair OK Check the trouble symptoms.NGReplace the engine-A/T-ECU. Check the power steering fluid pressure switch (Refer to GROUP 37A - On-vehicle Service.)NG Replace Inspection procedure 31 A/C switch and A/C relay system Probable cause When an A/C ON signal is input to the engine-A/T-ECU, the engine-A/T-ECU controls the throttle control servo so thatidlespeed increases, and also operates the A/C compressor magnetic clutch.DMalfunction of the A/C control system DMalfunction of the A/C switch DImproper connector contact,opencircuit or short-circuited harness wire DMalfunction of the engine-A/T-ECU Service the A/C compressor relay. (Refer to GROUP 55 - On-vehicle Service.)NG Replace OK Measure at engine-A/T-ECU connectors D-119, D-121. DDisconnect the connector, and measure at the harness side. DThe voltage between terminal 20, 83 and earth (Ignition switch: ON) OK: 0-3V (A/C switch: OFF) System voltage (A/C switch: ON) DConnect terminal 20 to earth. (Ignition switch: ON, A/C switch: ON) OK: A/C compressor clutch turns on.OKCheck the following connectors: D-119, D-121NG Repair OK Check the trouble symptoms. NG Replace the engine-A/T-ECU. NG Check the A/C system (Refer to GROUP 55 - Troubleshooting.) www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
