GDI -Troubleshooting 13A-185 Inspection procedure 18 Too high CO and HC concentration when idling Probable cause Abnormal air-fuel ratio is suspected.DMalfunction of the air/fuel ratio control system DDeteriorated catalyst OK To the nextpage NG Replace the ignition coil. 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 iscranked.NG NG Measure fuel high -pressure between the fuelpump (high pressure) and injector. (Refer to P.13A-223.) Check the trouble symptoms. OK MUT- IIData list 11 Oxygen sensor (Refer to P.13A-198.) OK: Repeat 0 - 400 mV and 600 - 1,000 mV alternately during idling(wait for at least 2 minutes after the enginestarted to run at idle).OKReplace the oxygen sensor. OK MUT- IIData list 11 Oxygen sensor (Refer to P.13A-198.) OK: 600 - 1,000 mV when theengine is suddenlyracedNGCheck the oxygen sensor system. (Refer to P.13A-131, code No.11.) 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.) 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 25 Barometric pressure sensor (Refer to P.13A-198.)NGCheck the barometric pressure sensor system (Refer to P.13A-145, code No.25.) OK MUT- IIData list 13 Intake air temperature sensor (Refer to P.13A-198.)NGCheck the intake air temperature sensor system (Refer to P.13A-135, code No.13.) 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.) NO Check the ignition timing. (Refer to GROUP 11A - Engine Adjustment.)NGCheck that the crankanglesensor andtiming beltcover are properly installed. MUT- IISelf-Diag Code Are diagnosis codes displayed?YESRefer to P.13A-130, INSPECTION CHART FOR DIAGNOSIS CODES. www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-191 Inspection procedure 27 Ignition switch-ST and inhibitor switch system Probable cause The ignition switch-ST inputs a HIGH signal to the engine-A/T-ECU while the engine iscranking. The engine-A/T-ECU controls fuel injection, etc. during starting based on this input. The inhibitor switch inputs the position of the selector lever to the engine-A/T-ECU. The engine-A/T-ECU uses this signal to carry outidlespeed control.DMalfunction of the ignition switch DMalfunction of the inhibitor switch DOpen circuit or short-circuited harness wire between the ignition switch and the inhibitor switch, or improper connector contact. DMalfunction of the engine-A/T-ECU OK Check the following connector: D-120 OK Ignition switch check (Refer to GROUP 54 - Ignition Switch.) OK Check the trouble symptoms. OK Check the trouble symptoms. MUT- IIData list Confirm the data list concerning the A/T system. 61 Inhibitor switch (Refer to GROUP 23 - Troubleshooting.)NGCheck the inhibitor switch system. (Refer to GROUP 23 - Troubleshooting.) OK Measure at engine-A/T-ECU connector D-120. DDisconnect the connector, and measure at the harness side. DThe voltage between terminal 58 and earth (Selector lever position: P or N) (Ignition switch: START) OK: System voltageNGCheck the following connector: C-05 NG Repair NG Check the harness between the inhibitor switch and the ignition switch. OK Check the trouble symptoms. NG Repair OK Check the inhibitor switch. DThe continuity between terminals 9 and 10 (Refer to GROUP 23 - On-vehicle Service.)NGReplace NG Replace the engine-A/T-ECU. NG Repair NG Check the harness wire between the inhibitor switch and the engine-A/T-ECU, and repair if necessary. OK Measure at inhibitor switch connector C-05. DDisconnect the connector, and measure at the harness side. DThe voltage between terminal 10 and earth (Ignition switch: ON) OK: System voltageNGCheck the following connector: E-114 NG Repair 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-195 Inspection procedure 32 Stop lamp switch system Probable cause The engine-A/T-ECU determines whether the brakepedal is depressed or not. The engine-A/T-ECU selects a fuel injectionmode by determining thebrake operation according to this information.DMalfunction of the stoplampswitch DImproper connector contact,opencircuit or short-circuited harness wire DMalfunction of the engine-A/T-ECU NG Check the following connectors: D-26 , D-27, D-124 NG Repair OK Check the trouble symptoms. OK Check the following connector: D-122NG Repair Stoplampswitch check (Refer to GROUP 35 - Brake Pedal.)NG Replace OK Measure at stoplampswitch connector D-136. DDisconnect the connector, and measure at the harness side. DThe voltage between terminal 2 and earth OK System voltageOKMeasure at the engine-A/T-ECU connector D-122. DDisconnect the connector, and measure at the harness side. DThe voltage between terminal 123 and earth (Ignition switch: ON) OK 0 - 3 V (when the brake pedal is not depressed) System voltage (when the brakepedal is depressed)NG NG Repair OK Check the trouble symptoms. NG Check the harness wire between the engine-A/T-ECU and the stoplamp switch, and repair if necessary. NG Check the harness wire between the battery and the stoplampswitch, and repair if necessary. OK Check the trouble symptoms.NGReplace the engine-A/T-ECU. Check the following connectors: D-26 , D-33, D-128, D-136, D-124 , E-13 Inspection procedure 33 Small lamp switch system Probable cause The engine-A/T-ECU determines whether the smalllampswitch is on or off. According to that information, the engine-A/T-ECU controls alternator output current when the vehicle is started.DImproper connector contact,opencircuit or short-circuited harness wire in thetaillamprelay circuit. DMalfunction of the engine-A/T-ECU OK Check the following connector: D-121NGReplace Measure at engine-A/T-ECU connector D-121. DDisconnect the connector, and measure at the harness side. DThe voltage between terminal 86 and earth (Lighting switch: ON) OK: System voltageNGCheck thetaillampcircuit. (Refer to ELECTRICAL WIRING.) OK Check the trouble symptoms. NG Replace the engine-A/T-ECU. www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-198 DATA LIST REFERENCE TABLE Caution When shifting the select lever to D range, the brakes should be applied so that the vehicle does not move forward. NOTE *1: Injector running time indicates the time where the power voltage is 11 V and the cranking speed is 250 r/min or less. As the engine speed increases and the time passes by, the injector running time decreases. *2: There may be occasions of taking the injector running time approximately 10% longer than usual when a vehicle has not been driven for a long time (mileage is no more than 500 km.) *3: It is normal that the idle switch turns from ON to OFF when accelerator pedal position sensor (1st channel) voltage increases by 200 - 600 mV from the idling position. Moreover, adjust the idle switch and accelerator pedal position sesor if the idle switch keeps turning after the accelerator pedal is depressed. Item No.Inspection itemInspection contentsNormal conditionInspection procedure No.Reference page 11Oxygen sensorEngine: After having warmed up (Air/fuel mixture is made leaner whenWhen at 4,000 r/min, engine is deceler- ated200 mV or lessCode No. 1113A-131 made leaner when decelerating, and is made richer when racing.) Race the engine sud- denly.600 - 1,000 mV Engine: After having warmed up (The oxygen sensor signal is used to check the air/fuelIdling (after six minutes)400 mV or less 600 - 1,000 mV (changes) check the air/fuel mixture ratio, and control condition by the engine- A/T-ECU.) 2,500 r/min 12Air flow sen-DEngine coolantIdling22 - 48 HzCode No.13A-133 sortemperature: 80 - 95 _C Lamps and all 2,500 r/min60 - 100 Hz 12 DLamps and all accessories: OFF DTransmission: P range RacingFrequency in- creases in re- sponse to racing 13Intake air temperatureIgnition switch: ON or with engine runningWhen intake air tem- perature is - 20_ C-20_ CCode No. 1313A-135 sensor When intake air tem- perature is 0_ C0_ C When intake air is 20_ C20_ C When intake air is 40_ C40_ C www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-201 Item No.Reference page Inspection procedure No. Normal condition Inspection contents Inspection item 41Injector drive time*1D Engine: CrankingWhen engine coolant temperature is 0_ C120 - 160 msCode No. 4113A-147 When engine coolant temperature is 20_ C70 - 90 ms When engine coolant temperature is 80_ C20 - 35 ms Injector drive time*2D Engine coolant temperature: 85 - 95_ CIdling0.3 - 0.8 ms 95_ C D Lamps and all accessories: OFF D Transmission: 2,500 r/min0.4 - 1.0 ms D Transmission: P range D Within six minutes after engine start- ing When engine is sud- denly racedIncreases 44Ignition ad- vance valueD Engine: After hav- ing warmed up D Timing lamp is set. (The timing lamp is set in order toIdling12 - 28_ BTDCCode No. 4413A-148 set in order to check actual igni- tion timing.) D Within six minutes after engine start- ing 2,500 r/min15 - 35_ BTDC 49A/C relayEngine: After having warmed up, idlingA/C switch: OFFOFF (compressor clutch is not oper- ating)Procedure No.3113A-194 A/C switch: ONON (compressor clutch is operat- ing) 67Stop lamp switchIgnition switch: ONBrake pedal: De- pressedOFFProcedure No.3213A-195 Brake pedal: Re- leasedON 68EGR valveD Engine coolant temperature: 85 - 95_ CIdling2 - 20 STEPProcedure No.3513A-196 D Lamps and all accessories: OFF D Transmission: P range 2,500 r/min0 - 10 STEP 74Fuel pres- sure sensorD Engine coolant temperature: 85 - 95_ CEngine: Cranking2 MPa or moreCode No. 5613A-151 D Lamps and all accessories: OFF D Transmission: P range Engine: Idling4.0 - 6.9 MPa www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-203 ACTUATOR TEST REFERENCE TABLE Item No.Inspection itemDrive ContentsInspection contentsNormal condi- tionInspec- tion pro- cedure No.Reference page 01InjectorCut fuel to the No.1 injector.Engine: Idling after warming-upIdling condition becomes differ-Code No. 4113A-147 02Cut fuel to the No.2 injector. (Cut the fuel supply to each injector in turn and check cylinders which does notent (becomes unstable, or the engine stalls). 03Cut fuel to the No.3 injector.affect idling.) 04Cut fuel to the No.4 injector. 05Cut fuel to the No.5 injector. 06Cut fuel to the No.6 injector. 07Fuel pump (low-pres- sure)Operates the fuel pump (low- pressure) to cir- culate fuel.Ignition switch: ONPinch the return hose with fin- gers to feel the pulse of the fuel being circulated.Pulse is felt.Proce- dure No.2913A-193 Operating sound can be heard around the fuel tank.Sound of opera- tion can be heard 08Purge con- trol solenoid valveSolenoid valve turns from OFF to ON.Ignition switch: ONSound of opera- tion can be heard when so- lenoid valve is driven.Proce- dure No.3613A-197 17Basic ignition timingSolenoid valve turns from OFF to ON.DEngine: Idling DSet a timing light. 5_BTDC-- 21Condenser fanDrive the fan motorDIgnition switch: ON DA/C switch: ON Fan motor runsProce- dure No.2113A-187 34Electronic- controlled throttle valve systemStop the throttle control servoIgnition switch: ONThe throttle valve opens slightlyCode No. 9113A-161 www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-205 Terminal No.Normal condition Check condition (Engine condition) Check item 18Condenser fan relayCondenser fan not operatingSystem voltage Condenser fan operating0 - 3 V or more 19Air flow sensor resetEngine: Idling0-1V signal Engine speed: 3,000 r/min6-9V 20A/C relayDEngine: Idling DA/C switch: OFF to ON (Compressor operating)System voltage or changes momentarily 6 V or more to 0 - 3 V 21Fuel pump relayIgnition switch: ONSystem voltage Engine: Idling0-3V 22Engine warning lampIgnition switch: OFF to ONSystem voltage 23GDI ECO indication lampIgnition switch: OFF to ON0 - 3 V (system voltage after five seconds) Rev the engine suddenly.System voltage 34Purge control solenoidDEngine coolantEngine: stoppedSystem voltage valvetemperature: 80 - 95_C DIgnition switch: ON Engine: After starting, in- crease the engine speed up to 3,500 r/minThe voltage drops 41Power supplyIgnition switch: ONSystem voltage 47 43Engine ignition signalEngine speed: 3,000 r/min0.3 - 3.0 V 44Engine coolant tem- perature sensorIgnition switch: ONWhen engine coolant tem- perature is 0_C3.2 - 3.8 V When engine coolant tem- perature is 20_C2.3 - 2.9 V When engine coolant tem- perature is 40_C1.3 - 1.9 V When engine coolant tem- perature is 80_C0.3 - 0.9 V 45Crank angle sensorEngine: Cranking0.4 - 4.0 V Engine: Idling1.5 - 2.5 V 46Power supply voltage applied to accelerator pedal position sensor (1st channel)Ignition switch: ON4.5 - 5.5 V www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
