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-196 Inspection procedure 34 Injector driver Probable cause The engine-A/T-ECU drives the injector by the drive signal.DMalfunction of the injector driver DImproper connector contact,opencircuit or short-circuited harness wire DMalfunction of the engine-A/T-ECU OK NG Replace the engine-A/T-ECU. OK Check the trouble symptoms.Transient malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.) OK Use a analyzer to measure the signal waveform at the engine- A/T-ECU connectors D-119 and D-120. DEngine: idling DSelector lever position: P DVoltage between 96 and earth, and between 1 and earth OK: A normal waveform should be displayed as described on P.13A-214 (INSPECTIONPROCEDURE USING AN ANALYZER).NGReplace the injector driver. NGCheck the following connectors: B-121, D-119Repair NG Repair OK Check the harness wire between the injector driver and engine- A/T-ECU. Inspection procedure 35 EGR valve (stepper motor) system Probable cause The engine-A/T-ECU controls the EGR valve (stepper motor) in order to control the amount ofexhaust gas mixed in the intake air.DMalfunction of the EGR valve DOpen circuit or short-circuited harness wire in the EGR valve circuit DMalfunction of the engine-A/T-ECU OK Check the trouble symptoms.NGCheck the harness wire between the engine controlrelay and the EGR valve, and repair if necessary. OK Check the trouble symptoms.NGCheck the harness wire between the engine-A/T-ECU and EGR valve, and repair if necessary. OK Check the trouble symptoms.NGReplace the engine-A/T-ECU. OK Check the following connector: D-120NG Repair OK Measure at the engine-A/T-ECU con- nector D-120. DDisconnect the connector, and measure at the harness side. DVoltage between 51, 53, 60, 62 and earth (Ignition switch: ON) OK: System voltageNGCheck the following connector: B-60NG Repair OK Measure at the EGR valve connector B-60. DDisconnect the connector, and measure at the harness side. DVoltage between 2, 5 and earth (Ignition switch: ON) OK: System voltageNGCheck the following connector: B-25XNG Repair Check the EGR valve. (Refer to GROUP 17 - Emission Control System.)NG Replace www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-197 Inspection procedure 36 Purge control solenoid valve system Probable cause The engine-A/T-ECU controls the purge control solenoid valve in order to control the purge air coming from the canister.DMalfunction of the purge control solenoid valve DOpen circuit or short-circuited harness wire in the purge control solenoid valve circuit DMalfunction of the engine-A/T-ECU OK Check the trouble symptoms.NGCheck the harness wire between the engine-A/T-ECU and the purge control solenoid valve, and repair if necessary. OK Check the trouble symptoms.NGReplace the engine-A/T-ECU. OK Check the following connector: D-120NG Repair OK Measure at the engine-A/T-ECU con- nector D-120. DDisconnect the connector, and measure at the harness side. DVoltage between 5 and earth (Ignition switch: ON) OK: System voltageNGCheck the following connector: B-106NG Repair OK Measure at the purge control solenoid valve connector B-106. DDisconnect the connector, and measure at the harness side. DVoltage between 2 and earth (Ignition switch: ON) OK: System voltageNGCheck the harness wire between the engine controlrelay and the purge control solenoid valve, and repair if necessary. Check the purge control solenoid valve. (Refer to GROUP 17 - On-vehicle Ser- vice.)NG Replace 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-199 Item No.Reference page Inspection procedure No. Normal condition Inspection contents Inspection item 14Throttle positionDEngine: After hav- ing warmed upRelease the acceler- ator pedal.4,000 mV or moreCode No. 1413A-137 sensor (2nd channel)DIgnition switch: ON (Engine: Stopped) Depress the acceler- ator pedal gradually.Voltage decreases in response to the pedal depression. Depress the acceler- ator pedal fully.400 - 600 mV 16System voltageIgnition switch: ONSystem voltageProcedure No. 2513A-190 18Cranking signal (igni-Ignition switch: ONEngine: StoppedOFFProcedure No.2713A-191 signal (igni- tion switch: ST) Engine: CrankingON No.27 21Engine cool- ant temper- ature sensorIgnition switch: ON or with engine runningWhen engine coolant temperature is -20_ C-20_ CCode No. 2113A-138 When engine coolant temperature is 0_ C0_ C When engine coolant temperature is 20_ C20_ C When engine coolant temperature is 40_ C40_ C 22Crank angle sensorDEngine: Cranking DTachometer: Con- nectedCompare the tachometer with the MUT-IIreading.IdenticalCode No. 2213A-140 DEngine: Idling DIdle position switch: ON DWithin six minutesWhen engine coolant temperature is -20_ C1,250 - 1,450 r/min DWithin six minutes after engine starting (Onlywhen engine coolant When engine coolant temperature is 0_ C1,100 - 1,300 r/min engine coolant temperature is 80 _C) When engine coolant temperature is 20_ C1,000 - 1,200 r/min When engine coolant temperature is 40_ C900 - 1,100 r/min When engine coolant temperature is 80_ C550 - 650 r/min www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-200 Item No.Reference page Inspection procedure No. Normal condition Inspection contents Inspection item 25BarometricIgnition switch: ONAt altitude of 0 m101 kPaCode No.13A-145 pressure sensor At altitude of 600 m95 kPa 25 At altitude of 1,200 m88 kPa At altitude of 1,800 m81 kPa 26Accelerator pedal posi-Ignition switch: ON (Depress and re-Release the acceler- ator pedal.ONProcedure No.2813A-192 tion switchlease the accelerator pedal several times) Depress the acceler- ator pedal slightly.OFF 27Power steering fluid pres- sure switchEngine: IdlingWhen steering wheel is turnedONProcedure No.3013A-194 28A/C switchEngine: Idling (The A/C compres-A/C switch: OFFOFFProcedure No.3113A-194 (The A/C compres- sor is running when the A/C switch is on.) A/C switch: ONON No.31 31Small lampEngine: IdlingLighting switch: OFFOFFProcedure13A-195 switch Lighting switch: ONON No.33 34Air flow sen-Engine: After havingIdlingONCode No.13A-133 sor reset signalwarmed up 3,000 r/minOFF 12 37VolumetricDEngine coolantIdling20 - 40%-- efficiencytemperature: 85 - 95 _C Lamps and all 2,500 r/min10 - 30%DLamps and all accessories: OFF DTransmission: P range Engine is suddenly racedVolumetric effi- ciency increases in response to racing 38Crank angle sensorDEngine: Cranking (reading is possible at 2,000 r/min or less) DTachometer: ConnectedEngine speeds displayed on the MUT-IIand tachometer are identical.-- 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-202 Item No.Reference page Inspection procedure No. Normal condition Inspection contents Inspection item 77Accelerator pedal posi-Ignition switch: ONRelease the acceler- ator pedal.985 - 1,085 mVCode No. 7713A-154 tion sensor (2nd chan- nel) Depress the acceler- ator pedal gradually.Increases in re- sponse to the pedal depression stroke. Depress the acceler- ator pedal fully.4,000 mV or more 78Accelerator pedal posi-Ignition switch: ONRelease the acceler- ator pedal.985 - 1085 mVCode No. 7813A-156 tion sensor (1st chan- nel) Depress the acceler- ator pedal gradually.Increases in re- sponse to the pedal depression stroke. Depress the acceler- ator pedal fully.4,000 mV or more 79Throttle positionDEngine: After hav- ing warmed upRelease the acceler- ator pedal.400 - 800 mVCode No. 7913A-158 sensor (1st channel)DIgnition switch: ON (Engine stopped) Depress the acceler- ator pedal gradually.Increases in re- sponse to the pedal depression stroke. Depress the acceler- ator pedal fully.4,200 - 4,800 mV Engine: Idling afterNo load450 - 1,000 mV warming-up A/C switch: OFF to ONIncreases by 100 - 600 mV Transmission: P to D rangeIncreases by 0 - 200 mV. 99Combustion modeEngine: After having warmed upIdling (several minutes af- ter starting)Compression lean-- 2,500 r/minStoichiometric feedback Race the engine sud- denly while the en- gine is idling.Open loop www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk