GDI -Troubleshooting 13A-162 Code No.92 Throttle valve position feedback systemProbable cause The throttle valve controller judges a malfunction, and then transmit the result to the engine-A/T-ECU. Range of Check DIgnition switch: ON DBattery voltage: 10 V or more Set Conditions DFailure in the position feedback [The engine-A/T-ECU detects that the current in the motor isexcessive and the opening angle difference between the targetvalue of throttle position sensor (1st channel) and the actual value of throttle position sensor (1st channel) is 2.0V or more]DMalfunction of throttle position sensor (1st channel) DOpen or short circuit in the throttle position sensor (1st channel) circuit or loose connector contact DMalfunction of the throttle valve controller NG Replace the throttle valve controller. OK Check the trouble symptoms. NG Check the harness wires between the throttle position sensor and the throttle valve controller, and between the throttle valve control servo and the throttle valve controller.NG Repair NO Adjust the throttle position sensor. (Refer to P.13A-220.) MUT- IISelf-Diag Code Is code No.79 set?YESRefer to Code No.79, Throttle position sensor (1st channel) system. (Refer to P.13A-158.) NO MUT- IISelf-Diag Code Is Code No.93 set?YESRefer to Code No.93, Throttle valve control servo system (Refer to P.13A-163.) OK Check the following connectors: B-102, B-122, D-11NG Repair OK Check the throttle valve control servo. (Refer to 13A-232.)NGReplace the throttle body assembly. www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-163 Code No.93 Throttle valve control servo systemProbable cause The throttle valve controller judges a malfunction, and then transmit the result to the engine-A/T-ECU. Range of Check DThrottle valve control servo relay: ON Set Conditions DShort circuit of the throttle valve control servo drive circuit to earth DPower is supplied to the throttle valve control servo circuit from other sources. DOpen circuit in the throttle valve control servo power supply circuitDMalfunction of the throttle valve control servo DOpen circuit in the throttle valve control servo power supply circuit DOpen or short circuit in the throttle valve control servo circuit or loose connector contact DMalfunction of throttle valve controller OKTransient malfunction (Refer to GROUP 00 - Points to Note for Intermittent Malfunctions.) OK Check the following connector: B-122NG Repair OK Measure at the throttle valve control servo connector B-122 DUse test harness (MB991658) to connect the connector, and measure at the pick-up harness. DIgnition switch: ON DThe voltage between terminal 1 and earth DThe voltage between terminal 2 and earth DThe Voltage between terminal 3 and earth OK: Voltage changes between 5 - 7 V when the accelerator pedal is operated. NOTE: Erase the diagnosis code before the measurement since a diagnosis code is recorded when the harness is disconnected.NGCheck the following connector: D-11NG Repair OK Check the trouble symptoms. OK Check the trouble symptoms. OK Check the harness wire between the throttle valve control servo and the throttle valve controller.NG Repair NG Check the throttle valve control servo. (Refer to P.13A-232.)NGReplace the throttle body assembly NG Replace the throttle valve controller. NG Replace the throttle valve controller. Check the trouble symptoms. NG Replace the engine-A/T-ECU. Check the operation of the throttle valve control servo. OK: The throttle valve opens or closes when the accelerator pedal is depressed or released. www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-164 Code No.94 Communication line system with the throttle valve controllerProbable cause Range of Check DIgnition switch: ON DBattery voltage: 8 V or more. DEngine: not cranking Set Conditions DSystem detects an error in communicationline between the engine-A/T-ECU and the throttle valve controller, and between the throttle valve controller and the engine-A/T-ECU.DShort in communicationline DMalfunction of engine-A/T-ECU DMalfunction of throttle valve controller MUT- IISelf-Diag Code Is Code No.91 output?YESRefer to Code No.91, Electronic-con- trolled throttle valve system (Refer to P13A-161.) NO NG Repair OK Measure at throttle valve controller connector D-11. DMeasure voltage at the throttle valve controller connector terminals. DIgnition switch: ON (1) The voltage between terminal 5 and earth OK: System voltage (2) The voltage between terminal 22 and earth OK: System voltage (3) The voltage between terminal 3 and earth The voltage between terminal 4 and earth The voltage between terminal 16 and earth OK: 0.5 V or less(1) NGCheck the following connectors: B-25X, D-128NG Repair Check the trouble symptoms.OK Check the harness wire between the throttle valve controller and theengine control relay, and repair if necessary. OK Check the trouble symptoms. NG Replace the engine-A/T-ECU. (2) NGCheck the following connectors: D-208, D-223, E-13NG Repair OK Check the harness wire between the throttle valve controller and the ignition switch, and repair if necessary. (3) NGCheck the following connector: D-14NG Repair OK Check the harness wire between the throttle valve controller and earth, and repair if necessary. OK Check the following connectors: D-119, D-122NG Repair OK Check the harness wire between the throttle valve controller and the engine-A/T-ECU.NG Repair NG Replace the throttle valve controller. Check the following connector: D-11 www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-169 INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS Inspection procedure 1 Communication with all systems is not possible. Probable cause The cause is probably a defect in the power supply system (including earth) for the diagnosis line.DMalfunction of the diagnosis connector DOpen circuit or short-circuited between engine-A/T-ECU and diagnosis connector circuit DMalfunction of the MUT-II Check the earth line, and repair if necessary. (2) NG Replace the MUT-II. NG Check the harness wire between the power supply and diagnosis connector, and repair if necessary. OK Check the trouble symptoms.NG Repair (1) NGCheck the following connectors: D-27, D-210, D-211 OK NG RepairOK Check the harness wire between diagnosis connector and the engine-A/T-ECU. Measure at the diagnosis connecter D-23. (1) The voltage between terminal 16 and earth OK: Battery voltage (2) Continuity between 4 and earth Continuity between 5 and earth OK: Continuity Inspection procedure 2 Communication with engine-A/T-ECU is not possible. Probable cause The cause is probably a defect in the engine-A/T-ECU power supply circuit (including earth).DOpen circuit or short-circuited harness wire in the engine-A/T-ECU power supply circuit. DOpen circuit between engine-A/T-ECU and diagnosis connector DMalfunction of the engine-A/T-ECU NG Check the harness wire between engine-A/T-ECU and diagnosis connector.OKCheck the engine-A/T-ECU power supply and earth circuit. (Refer to P. 13A-189, Inspection procedure 24.) OK Check the trouble symptoms. Check the following connectors: D-06, D-23, D-122, D - 128, D-222, E-13NG Repair NOTE On vehicles with multi communication system (MMCS) or RV meter, if a malfunctioncannot be resolved after the procedure above, check the multi center display unit or RV meter and replace if necessary. (Refer to GROUP 54 - Clock, multi center display and RV meter.) www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-170 Inspection procedure 3 The engine warning lamp does not illuminate right after the ignition switch is turned to the ON position. Probable cause Because there is a burnt-out bulb, the engine-A/T-ECU causes theengine warning lamp to illuminate forfive seconds immediately after the ignition switch is turned to ON. If the engine warning lampdoes notilluminate immediately after the ignition switch is turned to ON, one of the malfunction listed at right has probably occurred.DBurnt-out bulb DOpen circuit or short-circuit between theengine warning lamp and engine-A/T-ECU. DMalfunction of the engine-A/T-ECU NG Replace the engine-A/T-ECU. NG Check the harness wire between combination meter and engine-A/T-ECU connector, and repair if necessary.NG Check theengine warning lamp power supply circuit, and repair if necessary. OK Check the trouble symptoms. OK Measure at the combination meter connector D-01. DDisconnect the connector, and measure at the harness side. DVoltage between 62 and earth (Ignition switch: ON) OK: Battery voltageOKCheck the following connectors: D-02, D-119, E-13NG Repair NG Check a burnt-out bulb.NG Replace OK Check the trouble symptoms. OK Measure at the engine-A/T-ECU connector D-119. DDisconnect the connector, and measure at the harness side. DEarth the terminal 22 (Ignition switch: ON) OK: Engine warning lamp illumi- nates.OKCheck the following connector: D-119NG Repair MUT- IIData list 16 Engine-A/T-ECU power supply voltage (Refer to P.13A-198.)NGCheck the engine-A/T-ECU power supply and earth circuit (Refer to P.13A-189, Inspection procedure 24.) Inspection procedure 4 The engine warning lamp remains illuminating and never goes out. Probable cause In cases such as the above, the cause is probably that the engine-A/T-ECU is detecting a problem in a sensor or actuator, or that one of the malfunctions listed at right has occurred.DShort-circuit between the engine warning lamp and engine-A/T-ECU DMalfunction of the engine-A/T-ECU Replace the engine-A/T-ECU. NO Measure at the combination connector D-02. DDisconnect the connector, and measure at the harness side. DDisconnect the engine-A/T-ECU connector DContinuity between 38 and earth OK: No continuityNGCheck the harness wire between combination meter and engine-A/T-ECU connector, and repair if necessary. OK MUT- IISelf-Diag Code Is a diagnosis code set?YESRefer to P.13A-130, INSPECTION CHART FOR DIAGNOSIS CODES. www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-171 Inspection procedure 5 No initial combustion (starting impossible) Probable cause In cases such as the above, the cause is probably that a sparkplug is defective, or that the supply of fuel to the combustion chamber is defective. In addition, foreign materials (water, kerosene, etc.) may be mixed with the fuel.DMalfunction of the fuel supply system DMalfunction of the ignition system DMalfunction of the engine-A/T-ECU NGRepair OK MUT- IIData list 22 Crankanglesensor (Refer to P.13A-198.)NGCheck the crankanglesensor system. (Refer to P.13A-140, code No.22.) YES MUT- IIActuator Test 07 Fuel pump(low pressure) (Refer to P.13A-203.)NGCheck fuelpump(low pressure) system (Refer to P.13A-193, Inspection procedure 29.) OK Does the camshaft rotate when theengine is cranking?NOCheck if thetiming belt isbroken ordamaged. NO MUT- IIData list 16 Battery voltage (Refer to P.13A-198.)NGCheck theengine controlrelay and ignition switch-IG system (Refer to P.13A-190, Inspection procedure 25.) OK MUT- IISelf-Diag Code Is a diagnosis code set?YESRefer to P.13A-130, INSPECTION CHART FOR DIAGNOSIS CODES Check battery voltage when cranking. OK: 8 V or higherNGCheck the battery. OK Is starting good if the engine iscranked with the accelerator pedalslightly depressed?YESDClean the throttle valve area. (Refer to P.13A-220.) DCheck and adjust the throttle position sensor (Refer to P.13A-220.) OK MUT- IIData list 79 Throttle position sensor (1st channel) (Refer to P.13A-198.)NGCheck the throttle position sensor (1st channel) system (Refer to P.13A-158, code No.79.) 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 Measure low fuel pressure between the fuelpump(low pressure) and fuelpump (highpressure) (Refer to P.13A-222.)NGRepair OK To the nextpage NO Adjust the throttle position sensor (Refer to P.13A-220.) NG Measure at injector driver connector B-19 DDisconnect the connector, and measure at the harness side. DThe voltage between terminals 4, 12, 21 and earth (Ignition switch: ON) OK Battery voltage Check fuel leakage (Refer to P.13A-225.)OK Check the injector driver system. (Refer to P.13A-196, Inspection procedure 34.) NG www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-172 OK Check the following items in that order. DCheck the sparkplug DCheck the compression pressure DCheck if foreign materials (water, alcohol, etc.) got into fuel. OK Clamp the leads of the ignition coil No.1 terminal with atiming light pick-up in order. Does thetiming lightflash when the engine iscranked?NOCheck the ignition coil (built-in power transistor) system (Refer to P.13A-148, code No.44.) From the previouspage OK Check the trouble symptoms. 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. YES Check the ignitiontimingwhen cranking. OK: approx. 5_BTDCNGCheck that the crankanglesensor andtiming beltcover are properly installed. Replace the injector.NG Inspection procedure 6 Initial combustion but no complete combustion (starting impossible), long time to start (hard starting) Probable cause In such cases as the above, the cause is probably that the spark plugs are generating sparks by the spark are weak, or the initial mixture is not appropriate.DMalfunction of fuel supply system DMalfunction of of fuel pressure control solenoid valve DMalfunction of the ignition system DMalfunction of the electronic-controlled throttle valve system DMalfunction of the engine-A/T-ECU 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- IISelf-Diag Code Is a diagnosis code set?YESRefer to P.13A-130, INSPECTION CHART FOR DIAGNOSIS CODES. Check the battery voltage when cranking. OK: 8 V or higherNGCheck the battery. NO MUT- IIActuator Test 07 Fuel pump(low pressure) (Refer to P.13A-203.)NGCheck fuelpumpsystem (low-pressure) (Refer to P.13A-193, Inspection procedure 29.) OK To the nextpage www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
GDI -Troubleshooting 13A-173 NGReplace the injector.Check the trouble symptoms. OK Check the following items in that order. DCheck the sparkplug DCheck the compression pressure DCheck the fuel lines for clogging. DCheck if foreign materials (water, alcohol, 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. Caution Never touch the connector terminal as approx. 100 V is applied to the injector, or you are seriously injured. 3. Disconnect the injector intermediate connector. 4. Earth the sparkplug electrodesecurely. 5. Check that the sparkplug igniteswhen theengine is cranked.NGReplace the ignition coil. Check the ignitiontimingwhen cranking. OK: Approx. 5_BTDCNGCheck that the crankanglesensor andtiming beltcover are installed properly. NO Adjust the throttle position sensor (Refer to P.13A-220.) OK Is starting good if the engine iscranked with the accelerator pedalslightly depressed?YESDClean the throttle valve area. (Refer to P.13A-220) DAdjust the throttle position sensor (Refer to P.13A-220.) 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 Check fuel leakage. (Refer to P.13A-225.)NGRepair OK MUT- IIActuator Test 74 Fuel pressure sensor (Refer to P.13A-203.)NGCheck abnormal fuel pressure. (Refer to P.13A-151, code No.56.) OK MUT- IIData list 18 Cranking signal (Refer to P.13A-198.)NGCheck the ignition switch-ST system and inhibitor switch (Refer to 13A-191, Inspection procedure 27.) From the previouspage www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
