AUTOMATIC TRANSMISSION -Troubleshooting 23-39 NG Replace the valve body assembly. L Check the trouble symptoms. Replace the engine-A/T-ECU or A/T-ECU. Check the trouble symptoms. Repair OK NGDCheck the harness between the output shaft speed sensor and the engine-A/T-ECU. <6G7> DCheck the harness between the output shaft speed sensor and the A/T-ECU.<4M4> Replace the output shaft speed sensor. L OK Check the trouble symptoms. Overhaul the A/T. L DReplace the direct planetary carrier. Check the trouble symptoms. Eliminate the cause of the noise. From the previouspage 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 <6G7> Voltage between No.81 (D-121) and No.104 (D-122) <4M4> Voltage between No.32(D-108) and No.43 (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 minimumvalue should be 0.8 V or less. There should be no noise in the output wave pattern. OK NG Overhaul the A/T. L DReplace the UD clutch. (Code No. 41, 42 or No. 43 is output, or no other codes are output.) DReplace the OD clutch. (Code No. 43 or No. 45 is output, or no other codes are output.) DReplace the DIR clutch. (Code No. 45 is output, or no other codes are output.)NG NG NG www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
AUTOMATIC TRANSMISSION -Troubleshooting 23-40 Code No.45 5th without completion of shiftingProbable cause If the output shaft speed sensor output multiplied by the 5th gear ratio is not identical to the input shaft speed sensor output after shifting to 5th, code No. 45 is output. If code No. 45 is output 4 times, the transmission is fixed in 3rd and the N range lampflashes at a rate of 1 Hz.DMalfunction of input shaft speed sensor DMalfunction of output shaft speed sensor DMalfunction of harness or connector DMalfunction of solenoid valve DMalfunction of reverse clutch retainer DMalfunction of direct planetary carrier DMalfunction of 2ND brake system DMalfunction of OD clutch system DMalfunction of DIR clutch system DMalfunction of engine-A/T-ECU <6G7> DMalfunction of A/T-ECU.<4M4> DNoise is generated. LRefer to the Transmission Workshop Manual. Repair NO YES YES MUT- IISelf-Diag Code DIs code No. 22 output?Code No. 22 Input shaft speed sensor system check (Refer to P.23-20.) OK NO Code No. 23 Output shaft speed sensor system check (Refer to P.23-22.)MUT- IIActuator Test DIs code No. 23 output? NG NGMUT- IIActuator Test DNo.1 LR solenoid valve DNo.2 UD solenoid valve DNo.3 2ND solenoid valve DNo.4 OD solenoid valve DNo.5 RED solenoid valve OK:The sound of operation should be heard.Replace the appropriate solenoid valve. L DCheck the harness between the input shaft speed sensor and the engine-A/T-ECU. <6G7> DCheck the harness between the input shaft speed sensor and the A/T-ECU.<4M4> Replace the input shaft speed sensor. LNG Check the trouble symptoms. Overhaul the A/T. L DReplace the reverse clutch retainer. Check the trouble symptoms. Eliminate the cause of the noise.To the nextpage 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 <6G7> Voltage between No.81 (D-121) and No.103 (D-122) <4M4> Voltage between No.31(D-108) and No.43 (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 minimumvalue should be 0.8 V or less. There should be no noise in the output wave pattern. OKNG NG OK www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
AUTOMATIC TRANSMISSION -Troubleshooting 23-41 NG Replace the valve body assembly. L Check the trouble symptoms. Replace the engine-A/T-ECU or A/T-ECU. Check the trouble symptoms. Repair OK NGDCheck the harness between the output shaft speed sensor and the engine-A/T-ECU. <6G7> DCheck the harness between the output shaft speed sensor and the A/T-ECU.<4M4> Replace the output shaft speed sensor. L OK Check the trouble symptoms. Overhaul the A/T. L DReplace the direct planetary carrier. Check the trouble symptoms. Eliminate the cause of the noise. From the previouspage 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 <6G7> Voltage between No.81 (D-121) and No.104 (D-122) <4M4> Voltage between No.32(D-108) and No.43 (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 minimumvalue should be 0.8 V or less. There should be no noise in the output wave pattern. OK NG Overhaul the A/T. L DReplace the OD clutch. (Code No. 43 or No. 44 is output, or no other codes are output.) DReplace the 2ND brake. (Code No. 42 is output, or no other codes are output.) DReplace the DIR clutch. (Code No. 44 is output, or no other codes are output.)NG NG NG www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
AUTOMATIC TRANSMISSION -Troubleshooting 23-42 Code No. 46 Reverse without completion of shiftingProbable cause If the output shaft speed sensor output multiplied by the reverse gear ratio is not identical to the input shaft speed sensor output after shifting to reverse, code No. 46 is output. If code No. 46 is output 4 times, the transmission is fixed in 3rd and the N range lampflashes at a rate of 1 Hz.DMalfunction of input shaft speed sensor DMalfunction of output shaft speed sensor DMalfunction of harness or connector DMalfunction of solenoid valve DMalfunction of reverse clutch retainer DMalfunction of direct planetary carrier DMalfunction of LR brake system DMalfunction of REV clutch system DMalfunction of RED clutch system DMalfunction of engine-A/T-ECU <6G7> DMalfunction of A/T-ECU<4M4> DNoise is generated. LRefer to the Transmission Workshop Manual. Repair NO YES YES MUT- IISelf-Diag Code DIs code No. 22 output?Code No. 22 Input shaft speed sensor system check (Refer to P.23-20.) OK NO Code No. 23 Output shaft speed sensor system check (Refer to P.23-22.)MUT- IIActuator Test DIs code No. 23 output? NG NGMUT- IIActuator Test DNo.1 LR solenoid valve DNo.2 UD solenoid valve DNo.3 2ND solenoid valve DNo.4 OD solenoid valve DNo.5 RED solenoid valve OK:The sound of operation should be heard.Replace the appropriate solenoid valve. L DCheck the harness between the input shaft speed sensor and the engine-A/T-ECU. <6G7> DCheck the harness between the input shaft speed sensor and the A/T-ECU.<4M4> Replace the input shaft speed sensor. LNG Check the trouble symptoms. Overhaul the A/T. L DReplace the reverse clutch retainer. Check the trouble symptoms. Eliminate the cause of the noise.To the nextpage 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 <6G7> Voltage between No.81 (D-121) and No.103 (D-122) <4M4> Voltage between No.31(D-108) and No.43 (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 minimumvalue should be 0.8 V or less. There should be no noise in the output wave pattern. OKOK NG NG www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
AUTOMATIC TRANSMISSION -Troubleshooting 23-43 NG Replace the valve body assembly. L Check the trouble symptoms. Replace the engine-A/T-ECU or A/T-ECU. Check the trouble symptoms. Repair OK NGDCheck the harness between the output shaft speed sensor and the engine-A/T-ECU. <6G7> DCheck the harness between the output shaft speed sensor and the A/T-ECU.<4M4> Replace the output shaft speed sensor. L OK Check the trouble symptoms. Overhaul the A/T. L DReplace the reverse clutch. Check the trouble symptoms. Eliminate the cause of the noise. From the previouspage 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 <6G7> Voltage between No.81 (D-121) and No.104 (D-122) <4M4> Voltage between No.32(D-108) and No.43 (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 minimumvalue should be 0.8 V or less. There should be no noise in the output wave pattern. OK NG Overhaul the A/T. L DReplace the LR brake. (Code No. 41 is output, or no other codes are output.) DReplace the REV clutch. (No other codes are output.) Replace the RED brake. (Code No. 41, 42 or No. 43 is output, or no other codes are output.)NG NG NG Code No. 51 Communication problem with engine-ECUProbable cause If normal communication cannot be carried outsuccessfully for 1 second or more when the ignition switch is at the ON position, the system voltage is 10 V or higher and the enginespeed is 450 r/min or higher, code No. 51 is output. Furthermore, code No. 51 is also output if a communication problem with receiving data continues for 4 seconds or more under the same conditions.DMalfunction of engine-A/T-ECU <6G7> DMalfunction of engine-ECU <4M4> DMalfunction of A/T-ECU<4M4> DMalfunction of harness or connector<4M4> Check the following connectors:D-112, D-109NG Repair OK NG Repair OK Check the trouble symptoms. NG Replace the engine-ECU.Check the trouble symptoms.NG <4M4> <6G7> Check the harness between the engine-ECU and the A/T-ECU. Malfunction of A/T-ECU Malfunction of engine-A/T-ECU www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
AUTOMATIC TRANSMISSION -Troubleshooting 23-44 Code No. 52 Damper clutch control systemProbable cause If the DCC solenoid valve drive duty ratio is100% for a continuous period of 4 seconds or more when the damper clutch starts operating, it isjudged that there is a problem with the damper clutch control system, and code No. 52 is output.DMalfunction of input shaft speed sensor DMalfunction of DCC solenoid valve DMalfunction of harness or connector DMalfunction of reverse clutch retainer DMalfunction of engine-A/T-ECU <6G7> DMalfunction of A/T-ECU<4M4> DMalfunction of torque converter LRefer to the Transmission Workshop Manual. MUT- IISelf-Diag Code Is code No. 22 output?YESCode No. 22 Input shaft speed sensor system check (Refer to P.23-20.) NO NG Check the trouble symptoms. NG Check the trouble symptoms. NG Eliminate the cause of the noise. OK Replace the DCC solenoid valve. L NGMUT- IIActuator Test DNo. 6 DCC solenoid valve OK:Sound of operation can be heard Replace the input shaft speed sensor. L NG Repair OK 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 <6G7> Voltage between terminal 81 of D-121 and terminal 103 of D-122 <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. Overhaul the A/T. L DReplace the reverse clutch retainer. NG Replace the valve body assembly. L Check the trouble symptoms. Replace the engine-A/T-ECU or A/T-ECU. Replace the torque converter. NG Check the trouble symptoms.OK DCheck the harness between the input shaft speed sensor and the engine-A/T-ECU. <6G7> DCheck the harness between the input shaft speed sensor and the A/T-ECU.<4M4> NG www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
AUTOMATIC TRANSMISSION -Troubleshooting 23-45 Code No. 54 A/T control relay systemProbable cause If the A/T control relay voltage is less than 7 V after the ignition switch is turned to the ON position, it is judged that there is ashort-circuit to earth oropen circuit in the A/T control relay, and code No. 54 is output. The transmission will be fixed in 3rd as a fail-safe measure, and the N range indicator will flash at a rate of 1 Hz.DMalfunction of A/T control relay DMalfunction of harness or connector DMalfunction of engine-A/T-ECU <6G7> DMalfunction of A/T-ECU<4M4> A/T control relay check (Refer to P.23-103.)Replace Transient malfunction (Refer to GROUP 00 - Points to Note for Transient Malfunctions.) OK NG Check the following connectors: <6G7> D-120,<4M4>D-109 OK OKNG Repair OK Repair Check the following connector: drive vehicles> A-04, vehicles> D-145 NG (1)NG (2)NG NG Measure at engine-A/T-ECU connector D-120 <6G7>, or at A/T-ECU connector D-109 <4M4>. DMeasure at the ECU terminals. D<6G7> Voltage between terminal 50 and earth D<4M4> Voltage between terminal 71 and earth OK:System voltage Replace the engine-A/T-ECU or A/T-ECU.NGCheck the trouble symptoms. OKMUT- IIService Data DNo. 54 A/T control relay OK:System voltage (3)NG OK Measure at A/T control relay connector D-12. DDisconnect the relay and measure at the connector side. (1) Voltage between terminal 1 and earth OK:System voltage (2) Resistance between terminal 2 and earth OK:2 Wor less (3) Voltage between terminal 4 and earth (Ignition switch: ON) OK:System voltage OK Check the following connector:D-12Replace NG Check the harness between the A/T control relay and the battery. NG OKRepair Check the following connector:D-14 Check the harness between the A/T control relay and body earth. Repair OKNG NG DCheck the harness between the A/T control relay and the engine-A/T-ECU. <6G7> DCheck the harness between the A/T control relay and the A/T-ECU, and repair if necessary. <4M4> DCheck the harness between the A/T control relay and the engine-A/T-ECU. <6G7> DCheck the harness between the A/T control relay and the A/T-ECU.<4M4>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 77, 89 and earth D<4M4> Voltage between terminals 2, 3 and earth OK:System voltage OK DCheck the harness between the A/T control relay and the battery. DCheck the harness between the A/T control relay and the engine-A/T-ECU. <6G7> DCheck the harness between the A/T control relay and the A/T-ECU, and repair if necessary. <4M4> NGCheck the following connectors: <6G7> D-121,<4M4>D-107OK NG Repair www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
AUTOMATIC TRANSMISSION -Troubleshooting 23-46 Code No. 56 N range lamp systemProbable cause If the N range signal is OFF after the N range lamp illuminates(ON), it is judged that there is ashort-circuit to earth in the N range lamp, and code No. 56 is output.DMalfunction of Combination meter DMalfunction of harness or connector DMalfunction of engine-A/T-ECU <6G7> DMalfunction of A/T-ECU<4M4> OK OK NG OK NG RepairCheck the following connectors: <6G7> D-122, E-11,<4M4> E-11, E-113, D-109 Check the harness between the combination meter and earth, and repair if necessary. OK OK Measure at combination meter connector D-01. DDisconnect the connector and measure at the harness side. DResistance between terminal 57 and earth OK:2 Wor lessNGNG RepairCheck the following connector:D-30 OK Measure at combination meter connector D-03. DDisconnect the connector and measure at the harness side. DResistance between terminal 3 and earth OK:No continuity NG Repair OK NG Replace the engine-A/T-ECU or A/T-ECU. Check the trouble symptoms. OK Check the following connectors: <6G7> D-30, D-122, E-11,<4M4> D-30, E-11, D-109, E-113 NG Repair NG Replace NG Repair N range indicator valve check (Refer to GROUP 52A - Instrument Panel.) Check the following connectors: D-01, D-03 DCheck the harness between the combination meter and the engine-A/T-ECU, and repair if necessary. <6G7> DCheck the harness between the combination meter and the A/T-ECU, and repair if necessary. <4M4> DCheck the harness between the combination meter and earth. DCheck the harness between the combination meter and the engine-A/T-ECU. <6G7> DCheck the harness between the combination meter and the A/T-ECU.<4M4> www.WorkshopManuals.co.uk Purchased from www.WorkshopManuals.co.uk
