GDI -Troubleshooting 13A-182 Inspection procedure 13 Hesitation, sag, stumble, poor acceleration or surge Probable cause The cause is probably a malfunction of the ignition system, air/fuel ratio control system, electronic controlled throttle valve system, compression pressure, etc.DMalfunction of the ignition system DMalfunction of the air/fuel ratio control system DMalfunction of the electronic-controlled throttle valve system DImproper compression pressure DAir stuck in the air intake system NO NG Check that the crankanglesensor andtiming beltcover are properly installed. OK Check that air is sucked in the air intake system. DBroken intake manifold gasket DDamaged vacuum hose DDamaged air intake hose OK To the nextpage 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 11 Oxygen sensor (Refer to P.13A-198.) OK: 0 - 400 mV and 600 - 1,000 mV alternates when the engine is idling(wait for 2 minutes after the en- gine is started).NGMeasure fuel high-pressure between the fuel pump (high pressure) and injector. (Refer to P.13A-222.) 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- 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.) 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 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 26 Acceleratorpedal positionswitch (Refer to P.13A-198.)NGCheck the acceleratorpedal positionswitch system. (Refer to P.13A-192, Inspection procedure 28.) Check the ignition timing. (Refer to GROUP11A - Engine Adjustment) MUT- IISelf-Diag Code Is a diagnosis code displayed?YESRefer to P.13A-130, INSPECTION CHART FOR DIAGNOSIS CODES. OK www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-183 OK Check the following items in that order. DCheck the sparkplug DCheck the EGR control system DCheck the compression pressure DCheck the fuel filter or fuelline for clogging 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. OK Measure fuel high-pressure between the fuel pump (high pressure) and injector. (Refer to P.13A-222.)NGRepair From the previouspage Check the trouble symptoms.Replace the injector. NG 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.) Inspection procedure 14 The feeling of impact or vibration when accelerating Probable cause In cases such as the above, the cause is probably that there is an ignition leak accompanying the increase in the sparkplug demand voltage during acceleration.DMalfunction of the ignition system Replace the ignition coil. NG OK Check the trouble symptoms. OK Check the sparkplugNGReplace 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.) MUT- IISelf-Diag Code Is a diagnosis code displayed?YESRefer to P.13A-130, INSPECTION CHART FOR DIAGNOSIS CODES. www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
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-186 Check the trouble symptoms.NG From the previouspage Check the trouble symptoms. Replace the catalytic converter. OK Check the following items in that order. DCheck the sparkplug DCheck the compression pressure DCheck the positive crankcase ventilation system. NG Replace the injector. Inspection procedure 19 Low alternator output voltage (approx.12.3 V) Probable cause The cause is probably a malfunction of the alternator or one of the problems listed at right.DMalfunction of the charging system DOpen circuit between the alternator G terminal and the engine-A/T-ECU DMalfunction of the engine-A/T-ECU Measure at alternator connector B-59 DConnect the connector. (Use test harness: MB991519) DThe voltage between terminal 1 (black clip) and earth (Engine: Idling) (Headlamp: OFF to ON) (Stoplamp: OFF to ON) (Rear defogger switch: OFF to ON) OK: The voltage increases by 0.2 - 3.5 VNGMeasure at alternator connector B-59 DDisconnect the connector, and measure at the harness side. DDisconnect the engine-A/T-ECU connector DThe continuity between terminal 1 and earth OK: No continuityNGCheck the harness wire between the alternator and the engine-A/T-ECU, and repair if necessary. OK Check the alternator (Refer to GROUP16 - Charging System.)NG OK Check the following connectors: B-41, D-119Repair OK Replace the engine-A/T-ECU. OK Check the trouble symptoms. NG NG Check the harness wire between the alternator and the engine-A/T-ECU.Repair 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-188 Inspection procedure 22 GDI ECO indicator lamp does not illuminate. Probable cause If the GDI ECO indicator lampdoes notilluminate after turningswitch, the causes listed in the right column are suspected.DBurned-out GDI ECO indicator lamp bulb DOpen circuit or short-circuited harness wire in the GDI ECO indicator lampcircuit DMalfunction of the engine-A/T-ECU DMalfunction of the GDI ECO indicator lamp ECU NG Repair Measure at the engine-A/T-ECU connector D-119. DDisconnect the connector, and measure at the harness side. DEarth terminal 14 (Ignition switch: ON) OK: The GDI ECO indicator lamp illuminates.OKCheck the following connector: D-119 OK Check trouble symptom. NG Replace the engine-A/T-ECU. NG Check the following connectors: E-13, E-112 Check trouble symptom. Check the harness wire between the GDI ECO indicatorlamp ECU and engine-A/T-ECU. Check the relative circuit of GDI ECO indicatorlamp.(Refer to GROUP 54A - Troubleshooting.)NG OK OK NG NG Repair Repair Inspection procedure 23 GDI ECO indicator lamp remains illuminated and does not go off. Probable cause If the GDI ECO indicator lampdoes not go off duringhigh load operation, thecauses listed in the right column are suspected.DShort circuit between the GDI ECO indicatorlamp and engine-A/T-ECU DMalfunction of the engine-A/T-ECU DMalfunction of the GDI ECO indicator lamp ECU OK Replace the engine-A/T-ECU. Measure at GDI ECO indicator lamp ECUconnector E-112. DDisconnect the connector, and measure at the harness side. DDisconnect the engine-A/T-ECU connector. DContinuity between terminal 3 and earth OK: No continuityNGCheck the harness wire between the GDI ECO indicatorlamp ECU and engine-A/T-ECU, and repair if necessary. OK Check the relative circuit of GDI ECO indicatorlamp.(Refer to GROUP 54A - Troubleshooting.) 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
