AUTOMATIC TRANSMISSION -Troubleshooting 23-7 No.Inspection pro- cedure if there is an abnormality Diag- nosis code No. Check item Judgment value Test/operation Pre-test/opera- tion conditions 6Selector lever position: Sports mode (Must be done on a level and straight road.)Selector lever posi- tion and engine (1) Idling in 1st (Vehicle stopped) (2) Driving at aData List No. 63 (2) 1st (3) 2nd (4) 3rd (5) 4th (6) 5thShift condi- tion-- constant speed of 10 km/h in 1st (3) Driving at a constant speed of 30 km/h in 2nd (4) Driving at a constant speedData List No. 31 (2) 0% (3) 100% (4) 100% (5) 100% (6) 100%Low & re- verse sole- noid valve (LR solenoid valve)31LR solenoid valve system constant speed of 50 km/h in 3rd (5) Driving at a constant speed of 50 km/h in 4th (6) Driving at a constant speed Data List No. 32 (2) 0% (3) 0% (4) 0% (5) 0% (6) 100%Underdrive solenoid valve (UD solenoid valve)32UD solenoid valve system of 70 km/h in 5th (Each condition should be main- tained for 10 seconds or more) Data List No. 33 (2) 100% (3) 0% (4) 100% (5) 100% (6) 0%Second sole- noid valve (2ND sole- noid valve)332nd solenoid valve system Data List No. 34 (2) 100% (5) 0% (3) 100% (6) 0% (4) 0%Overdrive solenoid valve (OD solenoid valve)34OD solenoid valve system Data List No. 35 (2) 0% (5) 100% (3) 0% (6) 100% (4) 0%Reduction solenoid valve (RED solenoid valve)35RED solenoid valve system Data List No. 29 (1) 0 km/h (5) 50 km/hVehicle speed sen- sor-Vehicle speed sensor system Data List No. 22 (5) 1,300 - 1,600 r/minInput shaft speed sen- sor22Input shaft speed sensor system Data List No. 23 (5) 1,300 - 1,600 r/minOutput shaft speed sen- sor23Output shaft sensor system Selector lever posi- tion and engine (1) Driving at 30 km/h in 2 range,Data List No. 36 (1) 70% - 90% to 0% (2) 70% - 90%Damper clutch con- trol solenoid valve (DCC36 52DCC solenoid valve system then fully close the accelerator. (2) Driving at a constant speed of 50 km/h in 4thData List No. 52 (1) - 300 - - 100 r/min or 100 - 300 r/min (2) - 10 - 10 r/minsolenoid valve) www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
AUTOMATIC TRANSMISSION -Troubleshooting 23-8 No.Inspection pro- cedure if there is an abnormality Diag- nosis code No. Check item Judgment value Test/operation Pre-test/opera- tion conditions 7Suspends the INVECS-IIfunc-Use the MUT-IIto monitor data list Nos.For (1), (2) and (3), the output shaftProblem dur- ing shifting-Shocks, engine racing tion using MUT-II11, 23 and 63.speed (vehicleIncorrect-All pointsSelector level position:D(1) Accelerate to 5th gear at an APSspeed) should be identical, and thereshift points-Some points (Must be done on a level andgear at an APS output of 1.5 V (opening angleshould be no abnor- mal shocks. For (4),No shifting-No diagnosis codes straight road.)30%). (2) Slowly deceler- ate and stop.(5) and (6), down- shifting should occur immediately after 22Input shaft speed sensor system ate and stop. (3) Accelerate to 5th gear at an APSthe operation is car- ried out.23Output shaft sen- sor system output of 2.5 V (opening angle 50%).No shifting from 1st to31LR solenoid valve system 50%). (4) At 60 km/h in 5th, select Sports2nd, or no shifting from332nd solenoid valve system mode and shift down to 4th. (5) At 40 km/h in 4th, select Sports2nd to 1st411st without completion of shifting select Sports mode and shift down to 3rd. (6) At 20 km/h in 3rd, 422nd without completion of shifting shift down to 2nd. (7) At 20 km/h in 2nd, shift downNo shifting from 2nd to332nd solenoid valve system 2nd, shift down to 1st.3rd, or no shifting from34OD solenoid valve system 3rd to 2nd422nd without completion of shifting 433rd without completion of shifting No shifting from 3rd to31LR solenoid valve system 4th, or no shifting from35RED solenoid valve system 4th to 3rd433rd without completion of shifting 444th without completion of shifting No shifting from 4th to32UD solenoid valve system 5th, or no shifting from332nd solenoid valve system 5th to 4th444th without completion of shifting 455th without completion of shifting www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
AUTOMATIC TRANSMISSION -Troubleshooting 23-20 Code No. 22 Input shaft speed sensor systemProbable cause If no output pulse from the input shaft speed sensor is detected for 1 second or more while the vehicle is driving at 30 km/h or more in 4th, it isjudged that there is a short-circuit oropencircuit in the input shaft speed sensor, and code No. 22 is output. If code No. 22 is output 4 times, the transmission is locked at 3rd gear (D) or 2nd gear (downshift operation in Sports mode) as a fail-safe measure, and the N range indicator lampflashes at 1 Hz.DMalfunction of input shaft speed sensor DMalfunction of reverse clutch retainer DMalfunction of harness or connector DMalfunction of engine-A/T-ECU <6G7> DMalfunction of A/T-ECU<4M4> LRefer to the Transmission Workshop Manual. Transient malfunction (Refer to GROUP 00 - Points to Note for Transient Malfunctions.) OK NG Check the following connectors: <6G7> D-121,<4M4>D-108 To the nextpage NG OKNG NG RepairCheck the following connectors: <6G7> D-122,<4M4>D-108 Replace the engine-A/T-ECU or A/T-ECU. OKMUT- IIData List DNo. 22 Input shaft speed sensor OK:Refer to P.23-61 (Data List Chart). Repair OK NG NG Check the trouble symptoms. OK Measure at engine-A/T-ECU connector D-121 <6G7>, or at A/T-ECU connector D-107 <4M4>. DMeasure at the ECU terminals DIgnition switch: ON D<6G7> Voltage between terminal 81 and earth D<4M4> Voltage between terminal 43 and earth OK:0.5 V or less Replace the engine-A/T-ECU or A/T-ECU. NGCheck the trouble symptoms. NG Check the trouble symptoms. Check the following connectors: <6G7> D-121, D-122,<4M4>D-108 Replace the engine-A/T-ECU or A/T-ECU. OK OK Measure at engine-A/T-ECU connector D-122 <6G7>, or at A/T-ECU connector D-108 <4M4>. DMeasure at the ECU terminals DDisconnect C-23 DIgnition switch: ON D<6G7> Voltage between terminal 103 and earth D<4M4> Voltage between terminal 31 and earth OK:4.8 - 5.2 V Measure the output wave pattern of the input shaft speed sensor at engine-A/T-ECU connectors D-121 and D-122 <6G7>, or at A/T-ECU connector D-108<4M4>(using an oscilloscope). DVehicle speed: approx. 50 km/h DShift range: 4th D<6G7> Voltage between terminal 81 of D-121 and terminal 103 of D-122 D<4M4> Voltage between terminal 31 of D-108 and terminal 43 of D-108 OK:A wave pattern such as the one shown on P.23-69 (Check Procedure Using an Oscilloscope) should be output, and the maximum value should be 4.8 V or more and the minimumval- ue should be 0.8 V or less. There should be no noise in the output wave pattern.NG NG Repair www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
AUTOMATIC TRANSMISSION -Troubleshooting 23-22 Code No. 23 Output shaft speed sensor systemProbable cause If the output from the output shaft speed sensor is 50% or less continuously for 1 second or more while the vehicle is driving at 30 km/h or more in 4th, it is judged that there is ashort-circuit oropencircuit in the output shaft speed sensor, and code No. 23 is output. If code No. 23 is output 4 times, the transmission is locked at 3rd gear (D) or 2nd gear (downshift operation in Sports mode) as a fail-safe measure, and the N range indicator lampflashes at 1 Hz.DMalfunction of output shaft speed sensor DMalfunction of direct planetary carrier DMalfunction of harness or connector DMalfunction of engine-A/T-ECU <6G7> DMalfunction of A/T-ECU<4M4> LRefer to the Transmission Workshop Manual. NG Repair NG Transient malfunction (Refer to GROUP 00 - Points to Note for Transient Malfunctions.) OK NG Check the following connectors: <6G7> D-122,<4M4>D-108 To the nextpage NG OK NG RepairCheck the following connectors: <6G7> D-122,<4M4>D-108 Replace the engine-A/T-ECU or A/T-ECU. OKMUT- IIData List DNo. 23 Output shaft speed sensor system OK:Refer to P.23-61 (Data List Chart). Repair OK OK NG Check the trouble symptoms. OK Measure at engine-A/T-ECU connector D-121 <6G7>, or at A/T-ECU connector D-107 <4M4>. DMeasure at the ECU terminals DIgnition switch: ON D<6G7>Voltage between terminals 81 and earth D<4M4> Voltage between terminal 43 and earth OK:0.5 V or less Replace the engine-A/T-ECU or A/T-ECU. NGCheck the trouble symptoms. NG Check the trouble symptoms. Check the following connectors: <6G7> D-121, D-122,<4M4>D-108 Replace the engine-A/T-ECU or A/T-ECU. OK Measure at engine-A/T-ECU connector D-122 <6G7>, or at A/T-ECU connector D-108 <4M4>. DMeasure at the ECU terminals DDisconnect C-02 DIgnition switch: ON D<6G7>Voltage between terminals 104 and earth D<4M4> Voltage between terminal 32 and earth OK:4.8 - 5.2 VNG Measure the output wave pattern of the output shaft speed sensor at engine-A/T-ECU connectors D-121 and D-122 <6G7>, or at A/T-ECU connector D-108<4M4>(using an oscilloscope). DVehicle speed: approx. 50 km/h DShift range: 4th D<6G7> Voltage between terminal 81 of D-121 and terminal 104 of D-122 D<4M4> Voltage between terminal 32 of D-108 and terminal 43 of D-108 OK:A wave pattern such as the one shown on P.23-69 (Check Procedure Using an Oscilloscope) should be output, and the maximum value should be 4.8 V or more and the minimumval- ue should be 0.8 V or less. There should be no noise in the output wave pattern.NG Repair NG www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
AUTOMATIC TRANSMISSION -Troubleshooting 23-49 Inspection procedure 2 Starting not possible Probable cause If the enginewill not start when the selector lever is at the P or N position, the cause is probably a malfunction of the inhibitor switch system, the transmission control cable assembly, theenginesystem, the torque converter or the oil pump.DMalfunction of inhibitor switch system DMalfunction of transmission control cable assembly DMalfunction of enginesystem DMalfunction of torque converter DMalfunction of oil pump DMalfunction of engine-A/T-ECU <6G7> DMalfunction of A/T-ECU<4M4> LRefer to the Transmission Workshop Manual. NG Inspection Procedure 16: Inhibitor switch system check (Refer to P.23-58.)NG Repair or replace OK Torque converter check DCheck for incorrect installation (inserted at an angle, etc.) or damagedsplines.NGIf repair is possible, repair the damaged part. If repair is not possible because the splines aredamaged, replace the torque converter assembly. OK Replace the oil pumpassembly. L (The oilpump cannot be disassembled.) Engine system check DControl system, ignition system, fuel system, vehicle bodyNG Repair OK Transmission control cable assembly checkNG Repair OK Check the trouble symptoms.Replace the engine-A/T-ECU or A/T-ECU. Inspection procedure 3 Does not move forward Probable cause If the vehicle does not move forward when theengine is idling and theselector lever is moved from N to D, 3, 2 or L, or if it is shifted to 1st or 2nd in Sports mode, the cause is probably a problem with line pressure, or a malfunction of the UD clutch or valve body.DAbnormal line pressure DMalfunction of UD solenoid valve DMalfunction of UD clutch system DMalfunction of valve body DMalfunction of engine-A/T-ECU <6G7> DMalfunction of A/T-ECU<4M4> LRefer to the Transmission Workshop Manual. MUT- IIActuator Test DNo.2 UD solenoid valve OK:Sound of operation can be heardNGReplace the solenoid valve. L OK Fluid pressure test (Refer to P.23-106.) DMeasure the fluid pressure at each element in 1st in Sportsmode Standard value:Refer to P.23-106.NGDisassemble, clean and re-assemble the valve body. L DMake sure that the mounting bolts are not loose and that the O-ring and valve body are notdamaged or positioned incorrectly. DIf the extent of thedamagelooks too bad for repairs to be carried out, replace the valve body assembly. OK UD clutch system check DRemove the transmission assembly, the valve body cover and the valve body. DBlow air through the UD clutch oilhole in the transmission case, and check that the piston operates to maintain pressure. UD clutch check L DCheck for a problem such as burnt facing, poor piston sealing or interference with the retainer.OKCheck the trouble symptoms. NG Replace the engine-A/T-ECU or A/T-ECU.NG www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
AUTOMATIC TRANSMISSION -Troubleshooting 23-61 DATA LIST REFERENCE TABLE Data list No.Check itemInspection conditionsNormal condition 11APSIgnition switch: ON Engine: StoppedAccelerator pedal: Fully closed985 - 1085 mV Engine: Stopped Selector lever posi- tion: P Accelerator pedal: DepressedGradually increases from the above value. Accelerator pedal: Fully open4000 mV or higher 15A/T fluid tempera- ture sensorDriving after en- gine has warmed upDrive for 15 minutes or more until the ATF temperature reaches 70 - 80°C.Gradually increases to 70 - 80°C. 21Crank angle sen- sor <6G7>Engine: Idling Selector lever posi-Compare the engine speeds displayed onIdentical sor <6G7> Engine speed sen- sor <4M4>Selector lever posi- tion: Pspeeds displayed on the tachometer and the MUT-II. 22Input shaft speed sensorShift range: 4thDriving at a constant speed of 50 km/h in 4th1300 - 1600 r/min 23Output shaft speed sensorShift range: 4thDriving at a constant speed of 50 km/h in 4th1300 - 1600 r/min 25Wide open throttleAccelerator pedalReleasedOFF switchpositionDepressedON 26Stop lamp switchIgnition switch: ON Engine: StoppedBrake pedal: De- pressedON Engine: Stopped Brake pedal: Re- leasedOFF 29Vehicle speed sen- sorSelector lever posi- tion: Sports modeIdling in 1st (Vehicle stopped)0 km/h Driving at a constant speed of 50 km/h in 3rd50 km/h 31LR solenoid valve duty ratioSelector lever posi- tion: Sports modeData List No.No. 31No. 32No. 33No. 34No.35 32UD solenoid valve duty ratioDriving at a constant speed in 1st0%0%100%100%0% 332nd solenoid valve duty ratioDriving at a constant speed in 2nd100%0%0%100%0% 34OD solenoid valve duty ratioDriving at a constant speed in 3rd100%0%100%0%0% 35RED solenoid valve duty ratioDriving at a constant speed in 4th0%0%100%0%100% Driving at a constant speed in 5th100%100%0%0%100% www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
AUTOMATIC TRANSMISSION -Troubleshooting 23-62 Data list No.Normal condition Inspection conditions Check item 36DCC solenoid valve duty ratioShift range: 2ndDriving at 30 km/h in 2 range, then fully close accelerator.70% - 90% -to- 0% Driving at 50 km/h in 4th70% - 90% 52Damper clutch slip amountShift range: 2ndDriving at 30 km/h in 2 range, then fully close accelerator.- 300 - 100 r/min or 100 - 300 r/min Driving at a constant speed of 50 km/h in 4th- 10 - 10 r/min 54Control relay out- put voltageIgnition switch: OFFIgnition switch: ON10 - 12 V 61Inhibitor switchIgnition switch: ON Engine: StoppedSelector lever posi- tion: PP Engine: Stopped Selector lever posi- tion: RR Selector lever posi- tion: NN Selector lever posi- tion: DD 63Shift positionSelector lever posi- tion: Sports modeDriving at a constant speed of 10 km/h in 1st1st Driving at a constant speed of 30 km/h in 2nd2nd Driving at a constant speed of 50 km/h in 3rd3rd Driving at a constant speed of 50 km/h in 4th4th Driving at a constant speed of 70 km/h in 5th5th 65Dual pressureEngine: IdlingA/C switch: ONON switchA/C switch: OFFOFF 66OD-OFFsignal control is operatingWhile driving on a level roadOFF auto-cruise control system>While climbing an inclineON www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
AUTOMATIC TRANSMISSION -Troubleshooting 23-63 Data list No.Normal condition Inspection conditions Check item 67Select switchIgnition switch: ON Engine: Stopped(Data List No. )No. 67No. 68No. 69 Engine: Stopped Selector lever posi- tion: DOFFOFFOFF 68Upshift switchSelector lever opera- tion: Sports mode selectedONOFFOFF 69Downshift switchSelector lever opera- tion: Lever moved to upshift position and heldONONOFF Selector lever opera- tion: Lever moved to downshift position and heldONOFFON 73Target effective en- gine pressure <6G7>Engine: Idling Selector lever posi- tion: NAccelerator pedal: fully closed to de- pressedData changes. 754LLc switchIgnition switch: ON Engine: StoppedTransfer lever posi- tion: 4LLcON Transfer lever posi- tion: Other than the aboveOFF 76Theoretical effec- tive engine pres- sure <4M4>Engine: Idling Selector lever posi- tion: NAccelerator pedal: fully closed to de- pressedData changes. ACTUATOR TEST TABLE Item No.Check itemTest contentsInspection conditionsNormal condition 1LR solenoid valveThe solenoid valveIgnition switch: ONThe sound of opera- 2UD solenoid valvespecified by the MUT-Selector lever posi-tion should be heard 32nd solenoid valve IIis driven at 50% duty for 5 seconds. Notion: P Engine: Stoppedwhen the solenoid valve is driven. 4OD solenoid valveother solenoid valvesEngine: Stopped Throttle (accelerator) 5RED solenoid valve are energised.Opening angle volt- 6DCC solenoid valveage: Less than 1 V <6G7>, 71st shift indicator lampThe indicator lamp for <6G7>, less than 1.2 V <4M4> The shift indicator 82nd shift indicator lampthe shift stage speci-The fail-safe function should not be operat-lamp illuminates. 93rd shift indicator lamp fied by the MUT-II illuminates for 3 sec-should not be operat- ing. 104th shift indicator lamponds. 115th shift indicator lamp 12A/T control relayThe A/T control relay turns off for 3 sec- onds.Data List No. 54 (1) During test: 0 V (2) Normal: System voltage (V) www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
