DIAGNOSIS
- AT OIL TEMP light circuit is open or shorted.
- Combination meter malfunction
TROUBLE SYMPTOM
- When the ignition switch is turned to ON, the AT OIL TEMP light does not illuminate.
- AT OIL TEMP light remains lit after engine start.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK AT OIL TEMP LIGHT. Turn the ignition switch to ON. | Does the AT OIL TEMP light illuminate? | Go to step 2 . | Perform the self-diagnosis of combination meter. Refer to SELF-DIAGNOSIS DISPLAY MODE . |
| 2 CHECK AT OIL TEMP LIGHT. After the ignition switch is ON, wait for 2 seconds or more. | Does the AT OIL TEMP light illuminate? | Go to step 3 . | Go to step 4 . |
| 3 CHECK AT OIL TEMP LIGHT. Start the engine. | Does the AT OIL TEMP light go off? | Normal. Go back to Basic Diagnostic Procedure. Refer to BASIC DIAGNOSTIC PROCEDURE . | Go to step 6 . |
| 4 CHECK SUBARU SELECT MONITOR COMMUNICATION. Connect the Subaru Select Monitor to data link connector. | Is the communication between Subaru Select Monitor and TCM normal? | Go to step 5 . | Check the power supply ground circuit of TCM and Subaru Select Monitor communication. Refer to DIAGNOSTIC PROCEDURE FOR SUBARU SELECT MONITOR COMMUNICATION . |
| 5 CHECK DTC. Read the DTC relating the TCM using the Subaru Select Monitor. | Is DTC displayed? | Perform the diagnosis according to DTC. | Go to step 6 . |
| 6 CHECK TCM. Read the data of «ATF Temperature Lamp» using the Subaru Select Monitor. | Is "ON" displayed? | Go to step 7 . | Perform the self-diagnosis of combination meter. Refer to SELF-DIAGNOSIS DISPLAY MODE . |
| 7 CHECK TCM. Read the data of «ATF Temp.» using the Subaru Select Monitor. | Is the display 130°C or more? | Go to step 8 . | Replace the TCM. Refer to TRANSMISSION CONTROL MODULE (TCM) . |
| 8 CHECK ATF TEMPERATURE. Check the real fluid temperature from the transmission case surface temperature. | Is the temperature lower than «ATF Temp.» displayed on Subaru Select Monitor? | Perform the diagnosis according to DTC P0713. | When ATF temperature can be judged as actually high, perform the diagnosis again after the ATF temperature lowers. |
- AWD light circuit is open or shorted.
- Combination meter malfunction
- TCM malfunction
- When the ignition switch is turned to ON, the AWD light does not illuminate.
- AWD light remains lit after engine start.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK AWD LIGHT. Turn the ignition switch to ON. | Does the AWD light illuminate? | Go to step 2 . | Perform the self-diagnosis of combination meter. Refer to SELF-DIAGNOSIS DISPLAY MODE . |
| 2 CHECK AWD LIGHT. Start the engine. | Does AWD light go off after two seconds from engine start? | Current condition is normal. Go back to Basic Diagnostic Procedure. Refer to BASIC DIAGNOSTIC PROCEDURE . | Go to step 3 . |
| 3 CHECK COMBINATION METER. Perform the self-diagnosis of combination meter. Refer to SELF-DIAGNOSIS DISPLAY MODE . | Is there any trouble with the combination meter? | Repair the combination meter. | Replace the TCM. Refer to TRANSMISSION CONTROL MODULE (TCM) . |
Defective harness connector
Subaru Select Monitor communication failure
DTC DETECTING CONDITION
The inhibitor switch is open or short.
- Shift characteristics are erroneous.
- Shift indicator does not match with select lever.
- Shift indicator does not illuminate.
- N-D, N-R shock occur.
Input signal circuit to ATF temperature sensor is open.
Excessive shift shock
Input signal circuit to ATF temperature sensor is shorted.
Excessive shift shock
Input signal circuit of TCM is open or shorted.
- Excessive shift shock
- Does not shift to 5th.
Brake switch malfunction, open input signal circuit
Brake down control does not operate in manual mode.
- AT vehicle speed signal is abnormal.
- The harness connector between TCM and vehicle speed sensor is open or shorted.
- Shifting quality malfunction
- Driving performance is poor.
Brake switch malfunction, open input signal circuit
Gear is not shifted down when climbing a hill.
Target gear ratio and actual gear ratio do not match.
- Shift point is too high or too low.
- Excessive shift shock
- Gear is not changed.
- The vehicle does not move in "D" or "R" range with the engine running at high speed.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC. | Is any of the following DTCs displayed? P0751, P0753, P0756, P0758, P0761, P0763, P0766, P0768, P0771, P0773 | Perform the diagnosis according to DTC. | Go to step 2 . |
| 2 CHECK DTC. | Is DTC P1718 displayed? | Perform the diagnosis according to DTC. | Go to step 3 . |
| 3 CHECK AT TURBINE SPEED SENSOR CIRCUIT. Perform diagnosis according to DTC P0715. Refer to DTC P0715 INPUT/TURBINE SPEED SENSOR CIRCUIT . | Is there any trouble? | Check the turbine speed sensor 1 circuit. | Go to step 4 . |
| 4 CHECK AT TURBINE SPEED SENSOR CIRCUIT. Perform diagnosis according to DTC P1710. Refer to DTC P1710 TORQUE CONVERTER TURBINE 2 SPEED SIGNAL CIRCUIT MALFUNCTION . | Is there any trouble? | Check the turbine speed sensor 2 circuit. | Go to step 5 . |
| 5 CHECK AT VEHICLE SPEED SENSOR CIRCUIT. Perform diagnosis according to DTC P0720. Refer to DTC P0720 OUTPUT SPEED SENSOR CIRCUIT . | Is there any trouble? | Check for poor contact of the front vehicle speed sensor circuit harness and repair the fault location. | Go to step 6 . |
| 6 CHECK AT VEHICLE SPEED SENSOR CIRCUIT. Perform diagnosis according to DTC P1706. Refer to DTC P1706 AT VEHICLE SPEED SENSOR CIRCUIT MALFUNCTION (REAR WHEEL) . | Is there any trouble? | Check for poor contact of the rear vehicle speed sensor circuit harness and repair the fault location. | Go to step 7 . |
| 7 CHECK TRANSMISSION RANGE SENSOR CIRCUIT (PRNDL INPUT). Perform diagnosis according to DTC P0705. Refer to DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT (PRNDL INPUT) . | Is there any trouble? | Check the inhibitor switch circuit. | There are malfunctions in TCM, TCM connector poor contact, or transmission assembly mechanical malfunction. |
DIAGNOSTIC PROCEDURE
- Lock up clutch malfunction
- Defective torque converter assembly
- Defective control valve
- Defective turbine speed sensor 1 or 2
No lock-up occurs. (After engine is warmed up)
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC OF TCM. | Is any DTC of the followings detected? | P0715, P0720, P0753, P0758, P0763, P0768, P0773, P0751, P0756, P0761, P0766, P0771, P1710, P1718 Perform the diagnosis according to each DTC. | Go to step 2 . |
| 2 DRIVING CHECK FOR LOCK-UP CONDITION. Perform the Clear Memory Mode. Maintain the value of «Accel. Opening Angle» displayed on Subaru Select Monitor and drive the vehicle at 85 km/h or more. Make sure that «L/U Solenoid Current» is 0.6 A or more using Subaru Select Monitor. Read the data of «Engine Speed» and «Turbine Revolution Speed» using Subaru Select Monitor. | Is the difference between «Engine Speed» and «Turbine Revolution Speed» within 100 RPM? | Temporary poor contact or open circuit occurs. Recheck that the harness connector has no faulty. | Replace the transmission assembly when the speed difference becomes 100 RPM or more or DTC P0741 is displayed. When DTC other than P0741 is displayed, perform the diagnosis corresponding to the DTC. |
DIAGNOSTIC PROCEDURE
The output signal circuit of lock up solenoid is open or shorted.
No lock-up occurs. (After engine is warmed up)
Output signal circuit of line pressure solenoid is open or shorted.
Excessive shift shock
Output signal of front brake solenoid does not match with oil pressure.
Locked to 1st gear.
Output signal circuit of front brake solenoid is open or shorted.
Locked to 1st gear.
Output signal value of input clutch solenoid and oil pressure does not match.
Locked to 1st or 4th gear.
Output signal circuit of input clutch solenoid is open or shorted.
Locked to 1st or 4th gear.
Output signal value of high & low reverse clutch solenoid and oil pressure does not match.
Locked to 1st gear.
Output signal circuit of high & low reverse clutch solenoid is open or shorted.
Locked to 1st gear.
Output signal value of direct clutch solenoid and oil pressure does not match.
Locked to 1st or 4th gear.
The output signal circuit of direct clutch solenoid is open or shorted.
Locked to 1st or 4th gear.
Output signal of forward brake solenoid does not match the oil pressure.
Locked to 2nd, 3rd or 4th gear.
Output signal circuit of forward brake solenoid is open or shorted.
Locked to 2nd, 3rd or 4th gear.
Shift lock solenoid malfunction, open or short reverse inhibitor control circuit
- Gear is shifted from "N" range to "R" range during driving at 20 km/h (12 MPH) or more.
- Gear cannot be shifted from "N" range to "R" range though the vehicle is parked.
Open or short in P/N signal output circuit
- Engine can be started on other than "P" or "N" range.
- Engine can not be started on "P" or "N" range.
Scheme 814
- AT Control System. Refer to appropriate SYSTEM WIRING DIAGRAM article.
- Engine electrical system. Refer to appropriate SYSTEM WIRING DIAGRAM article.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK DTC OF TCM. | Is DTC of Transmission Range Sensor Circuit (PRNDL Input) detected? | Perform the diagnosis according to DTC. | Go to step 2 . |
| 2 CHECK ECM. | Is the communication between Subaru Select Monitor and ECM normal? | Go to step 3 . | Perform the diagnosis according to DTC of ECM. |
| 3 CHECK FUSE (NO. 21). Turn the ignition switch to OFF. Remove the fuse. | Is the fuse (No. 21) blown out? | Replace the fuse (No. 21). If the replaced fuse (No. 21) has blown out easily, repair the short circuit of harness between fuse (No. 21) and inhibitor relay. | Go to step 4 . |
| 4 CHECK HARNESS CONNECTOR BETWEEN TCM AND ECM. Turn the ignition switch to OFF. Disconnect the connectors from TCM, ECM and inhibitor relay. Measure the resistance of harness between TCM connector and ECM connector. Connector & terminal (B54) No. 11 - (B136) No. 35 | Is the resistance less than 1 ohms? | Go to step 5 . | Repair the open circuit of harness between TCM and ECM connector, or poor contact of connector. |
| 5 CHECK HARNESS CONNECTOR BETWEEN TCM AND INHIBITOR RELAY. Measure the resistance of the harness between TCM connector and inhibitor relay. Connector & terminal Without push button start (B54) No. 11 - (B498) No. 1: With push button start (B54) No. 11 - (B225) No. 3 | Is the resistance less than 1 ohms? | Go to step 6 . | Repair the open circuit of harness between TCM and inhibitor relay, or poor contact of connector. |
| 6 CHECK HARNESS CONNECTOR BETWEEN TCM AND CHASSIS GROUND. Measure the resistance of harness between TCM connector and chassis ground. Connector & terminal (B54) No. 11 - Chassis ground | Is the resistance 1 Mohms or more? | Go to step 7 . | Repair the short circuit of the harness between TCM and chassis ground. |
| 7 CHECK OUTPUT SIGNAL OF TCM. Connect the TCM, ECM, and inhibitor relay connector. Turn the ignition switch to ON. Shift the select lever to "P" range. Measure the voltage between TCM connector and chassis ground. Connector & terminal (B54) No. 11 (+) - Chassis ground (-) | Is the voltage 1 V or less? | Go to step 8 . | Replace the TCM. Refer to TRANSMISSION CONTROL MODULE (TCM) . |
| 8 CHECK OUTPUT SIGNAL OF TCM. Set the select lever to "D" range. Measure the voltage between TCM connector and chassis ground. Connector & terminal (B54) No. 11 (+) - Chassis ground (-) | Is the voltage 8 V or more? | Go to step 9 . | Replace the TCM. Refer to TRANSMISSION CONTROL MODULE (TCM) . |
| 9 CHECK FOR POOR CONTACT. | Is there any open or poor contact of connector (loosing terminal, entering foreign matter, damaging connector body) | Repair the poor contact. | Check the neutral switch circuit of ECM. |
DIAGNOSTIC PROCEDURE
Output circuit of the back-up light relay is open or shorted
Back-up light does not illuminate in "R" range.
Output circuit of the back-up light relay is open or shorted
Back-up light does not illuminate in "R" range.
Input signal circuit of TCM is open or shorted.
Shifting quality malfunction
Output signal circuit of transfer solenoid is open or shorted.
- Tight corner braking phenomenon occurs.
- Driveability getting worse.
Input signal circuit of TCM is open or shorted.
- Excessive shift shock
- Does not shift to 5th.
TCM EEPROM malfunction
- AT learning is not finished.
- Shock occurs when selecting N --> D, N --> R.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK BATTERY. Turn the ignition switch to ON. Read the data of «Battery voltage» using Subaru Select Monitor. | Is the «Battery voltage» 10 V or more? | Go to step 2 . | Check the battery. |
| 2 CHECK DTC. Turn the ignition switch to OFF. Turn the ignition switch to ON after one minute. | Is DTC P1724 displayed as a temporary code? | Replace the TCM. Refer to TRANSMISSION CONTROL MODULE (TCM) . | Current condition is normal. Check for poor contact of TCM connector or harness. |
DIAGNOSTIC PROCEDURE
Input signal circuit of manual mode switch is open or shorted.
- Manual mode can not be set.
- Shift indicator displays when shifting "N" --> "D".
Front brake oil pressure switch malfunction
Excessive shift shock
Note. Refer to DTC P0751 SHIFT SOLENOID "A" PERFORMANCE OR STUCK OFF .
Forward brake oil pressure switch malfunction.
Excessive shift shock
Note. Refer to DTC P0771 SHIFT SOLENOID "E" PERFORMANCE OR STUCK OFF .
Input clutch oil pressure switch is malfunction.
Excessive shift shock
Note. Refer to DTC P0756 SHIFT SOLENOID "B" PERFORMANCE OR STUCK OFF .
Direct clutch oil pressure switch malfunction.
Excessive shift shock
Note. Refer to DTC P0766 SHIFT SOLENOID "D" PERFORMANCE OR STUCK OFF .
High & low reverse clutch oil pressure switch malfunction.
Excessive shift shock
Note. Refer to DTC P0761 SHIFT SOLENOID "C" PERFORMANCE OR STUCK OFF .
- Output signal circuit of shift indicator is open or shorted.
- Combination meter malfunction
- Shift indicator does not display or remains displayed.
- Shift indicator display does not change.
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK TCM. Check the DTC relating the TCM using the Subaru Select Monitor. | Is DTC displayed? | Perform the diagnosis according to DTC. | Go to step 2 . |
| 2 CHECK COMBINATION METER. Check the DTC of combination meter. | Is DTC displayed? | Perform the diagnosis according to DTC. | Go to step 3 . |
| 3 CHECK TCM. Turn the ignition switch to OFF. Connect the Subaru Select Monitor to data link connector. Turn the ignition switch to ON. Run the Subaru Select Monitor. Shift the select lever to manual mode. Read the data of «Gear Position» using Subaru Select Monitor. | Is the gear position "1"? | Go to step 4 . | Replace the TCM. Refer to TRANSMISSION CONTROL MODULE (TCM) . |
| 4 CHECK TCM. Shift up the select lever. Read the data of «Gear Position» using Subaru Select Monitor. | Is the gear position "2"? | Replace the combination meter assembly. Refer to COMBINATION METER . | Replace the TCM. Refer to TRANSMISSION CONTROL MODULE (TCM) . |
DIAGNOSTIC PROCEDURE
INSPECTION
| Symptoms | Faulty parts |
|---|---|
| Shifting vehicle speed is low on "D" range. | Front and rear vehicle speed sensors Accelerator pedal position sensor Throttle position sensor ATF temperature sensor CAN communication signal |
| Shifting vehicle speed is high on "D" range. | Front and rear vehicle speed sensors Accelerator pedal position sensor Throttle position sensor CAN communication signal Brake switch signal ATF temperature sensor |
| Excessive shift shock ("N" --> "D" range) | Engine idle speed Engine speed signal Accelerator pedal position sensor Throttle position sensor Control cable adjustment ATF temperature sensor Oil pressure switch 1 and front brake solenoid valve CAN communication signal Fluid level and condition TCM power supply |
| Excessive shift shock on 1st of "D" range --> 2nd of "D" range or "1st of manual mode" --> "2nd of manual mode". | Accelerator pedal position sensor Throttle position sensor Control cable adjustment Oil pressure switch 4 and direct clutch solenoid valve CAN communication signal Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Front and rear vehicle speed sensors Fluid level and condition |
| Excessive shift shock on 2nd of "D" range --> 3rd of "D" range or "2nd of manual mode" --> "3rd of manual mode". | Accelerator pedal position sensor Throttle position sensor Control cable adjustment Oil pressure switch 5 and high & low reverse clutch solenoid valve CAN communication signal Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Front and rear vehicle speed sensors Fluid level and condition |
| Excessive shift shock on 3rd of "D" range --> 4th of "D" range or "3rd of manual mode" --> "4th of manual mode". | Accelerator pedal position sensor Throttle position sensor Control cable adjustment Oil pressure switch 3 and input clutch solenoid valve CAN communication signal Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Front and rear vehicle speed sensors Fluid level and condition |
| Excessive shift shock on 4th of "D" range --> 5th of "D" range or "4th of manual mode" --> "5th of manual mode". | Accelerator pedal position sensor Throttle position sensor Control cable adjustment Oil pressure switch 1 and front brake solenoid valve CAN communication signal Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Front and rear vehicle speed sensors Fluid level and condition |
| Excessive shock at kick down. | Accelerator pedal position sensor Throttle position sensor Control cable adjustment CAN communication signal Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Front and rear vehicle speed sensors Fluid level and condition |
| Excessive shock at shift up. | Accelerator pedal position sensor Throttle position sensor Control cable adjustment Engine speed signal CAN communication signal Turbine speed sensor 1 and turbine speed sensor 2 Front and rear vehicle speed sensors Fluid level and condition |
| Excessive shock at lock up. | Accelerator pedal position sensor Throttle position sensor Control cable adjustment Engine speed signal CAN communication signal Turbine speed sensor 1 and turbine speed sensor 2 Lock up solenoid valve Front and rear vehicle speed sensors Fluid level and condition |
| Excessive shock at engine brake. | Accelerator pedal position sensor Throttle position sensor Control cable adjustment CAN communication signal Fluid level and condition Line pressure Forward brake solenoid valve |
| Judder is occurred at lock up. | Fluid level and condition Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Front and rear vehicle speed sensors Accelerator pedal position sensor Throttle position sensor Lock up solenoid valve ATF temperature sensor |
| Noise at "R", "N" and "D" range. | Fluid level and condition Engine speed signal ATF temperature sensor |
| Hold at "D" range or 1st on manual mode. | Fluid level and condition Front and rear vehicle speed sensors Direct clutch solenoid valve Line pressure Up switch signal CAN communication signal Accelerator pedal position sensor |
| Hold at "D" range or 2nd on manual mode. | Fluid level and condition Front and rear vehicle speed sensors Forward brake solenoid valve Line pressure Up switch signal Down switch signal CAN communication signal Accelerator pedal position sensor |
| Hold at "D" range or 3rd on manual mode. | Fluid level and condition Front and rear vehicle speed sensors Line pressure Up switch signal Down switch signal CAN communication signal Accelerator pedal position sensor |
| Hold at "D" range or 4th on manual mode. | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 3 and input clutch solenoid valve Oil pressure switch 4 and direct clutch solenoid valve Oil pressure switch 5 and high & low reverse clutch solenoid valve Forward brake solenoid valve Front brake solenoid valve Line pressure Up switch signal Down switch signal CAN communication signal Accelerator pedal position sensor TCM power supply |
| Hold at "D" range or 5th on manual mode. | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 1 and front brake solenoid valve Line pressure Down switch signal CAN communication signal Accelerator pedal position sensor |
| Gear does not shift 1st of "D" range --> 2nd of "D" range or "1st of manual mode" --> "2nd of manual mode". | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 4 and direct clutch solenoid valve Line pressure Up switch signal CAN communication signal Accelerator pedal position sensor |
| Gear does not shift 2nd of "D" range --> 3rd of "D" range or "2nd of manual mode" --> "3rd of manual mode". | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 5 and high & low reverse clutch solenoid valve Line pressure Up switch signal CAN communication signal Accelerator pedal position sensor |
| Gear does not shift 3rd of "D" range --> 4th of "D" range or "3rd of manual mode" --> "4th of manual mode". | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 3 and input clutch solenoid valve Oil pressure switch 1 and front brake solenoid valve Line pressure Up switch signal CAN communication signal Accelerator pedal position sensor |
| Gear does not shift 4th of "D" range --> 5th of "D" range or "4th of manual mode" --> "5th of manual mode". | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 1 and front brake solenoid valve Oil pressure switch 4 and direct clutch solenoid valve Turbine speed sensor 1 and turbine speed sensor 2 ATF temperature sensor Line pressure Up switch signal CAN communication signal Accelerator pedal position sensor |
| Gear does not shift down to 4th on "D" range or manual mode. | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 1 and front brake solenoid valve Oil pressure switch 4 and direct clutch solenoid valve Line pressure Down switch signal CAN communication signal Accelerator pedal position sensor |
| Gear does not shift down to 3rd on "D" range or manual mode. | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 3 and input clutch solenoid valve Oil pressure switch 1 and front brake solenoid valve Line pressure Down switch signal CAN communication signal Accelerator pedal position sensor TCM power supply |
| Gear does not shift down to 2nd on "D" range or manual mode. | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 5 and high & low reverse clutch solenoid Line pressure Down switch signal CAN communication signal Accelerator pedal position sensor |
| Gear does not shift down to 1st on "D" range or manual mode. | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 4 and direct clutch solenoid valve Line pressure Down switch signal CAN communication signal Accelerator pedal position sensor |
| No lock-up occurs. | Fluid level and condition Line pressure Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Lock up solenoid valve CAN communication signal ATF temperature sensor Accelerator pedal position sensor Brake switch signal Range signal |
| No shift shock occurred when shifting 1st of "D" range --> 2nd of "D" range or "1st of manual mode" --> "2nd of manual mode". Or clutch slipping occurred. | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 4 and direct clutch solenoid valve Line pressure CAN communication signal |
| No shift shock occurred when shifting 2nd of "D" range --> 3rd of "D" range or "2nd of manual mode" --> "3rd of manual mode". Or clutch slipping occurred. | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 5 and high & low reverse clutch solenoid valve Line pressure CAN communication signal |
| No shift shock occurred when shifting 3rd of "D" range --> 4th of "D" range or "3rd of manual mode" --> "4th of manual mode". Or clutch slipping occurred. | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 3 and input clutch solenoid valve Oil pressure switch 1 and front brake solenoid valve Line pressure CAN communication signal |
| No shift shock occurred when shifting 4th of "D" range --> 5th of "D" range or "4th of manual mode" --> "5th of manual mode". Or clutch slipping occurred. | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 1 and front brake solenoid valve Oil pressure switch 4 and direct clutch solenoid valve Line pressure Accelerator pedal position sensor Throttle position sensor |
| Engine skids when shifting 5th of "D" range --> 4th of "D" range or "5th of manual mode" --> "4th of manual mode". Or slipping occurred. | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 1 and front brake solenoid valve Oil pressure switch 4 and direct clutch solenoid valve Line pressure Accelerator pedal position sensor Throttle position sensor |
| Engine skids when shifting 4th of "D" range --> 3rd of "D" range or "4th of manual mode" --> "3rd of manual mode". Or slipping occurred. | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 3 and input clutch solenoid valve Oil pressure switch 1 and front brake solenoid valve Line pressure Accelerator pedal position sensor Throttle position sensor |
| Engine skids when shifting 3rd of "D" range --> 2nd of "D" range or "3rd of manual mode" --> "2nd of manual mode". Or slipping occurred. | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 5 and high & low reverse clutch solenoid valve Oil pressure switch 4 and direct clutch solenoid valve Line pressure Accelerator pedal position sensor Throttle position sensor |
| Engine skids when shifting 2nd of "D" range --> 1st of "D" range or "2nd of manual mode" --> "1st of manual mode". Or slipping occurred. | Fluid level and condition Front and rear vehicle speed sensors Oil pressure switch 4 and direct clutch solenoid valve Line pressure Accelerator pedal position sensor Throttle position sensor |
| Engine brake does not function at 5th --> 4th of manual mode. | Inhibitor switch Fluid level and condition Control cable adjustment Manual mode switch Oil pressure switch 1 Down switch signal |
| Engine brake does not function at 4th --> 3rd of manual mode. | Inhibitor switch Fluid level and condition Control cable adjustment Manual mode switch Oil pressure switch 1 and oil pressure switch 3 Down switch signal |
| Engine brake does not function at 3rd --> 2nd of manual mode. | Inhibitor switch Fluid level and condition Control cable adjustment Manual mode switch Oil pressure switch 5 Forward brake solenoid valve |
| Engine brake does not function at 2nd --> 1st of manual mode. | Inhibitor switch Fluid level and condition Control cable adjustment Manual mode switch Oil pressure switch 4 Forward brake solenoid valve |
| Excessive acceleration failure on "D" range. | Fluid level and condition Line pressure Accelerator pedal position sensor Throttle position sensor CAN communication signal Inhibitor switch Control cable adjustment Front and rear vehicle speed sensors |
| Excessive acceleration failure in "R" range. | Fluid level and condition Line pressure Accelerator pedal position sensor Throttle position sensor Oil pressure switch 5 and high & low reverse clutch solenoid valve CAN communication signal Inhibitor switch Control cable adjustment Front and rear vehicle speed sensors |
| Engine skids when start driving (1st) the vehicle. Or slipping occurred. | Fluid level and condition Line pressure Accelerator pedal position sensor Throttle position sensor CAN communication signal |
| Engine skids when driving at 2nd. Or slipping occurred. | Fluid level and condition Line pressure Accelerator pedal position sensor Throttle position sensor CAN communication signal Oil pressure switch 4 and direct clutch solenoid valve |
| Engine skids when driving at 3rd. Or slipping occurred. | Fluid level and condition Line pressure Accelerator pedal position sensor Throttle position sensor CAN communication signal Oil pressure switch 5 and high & low reverse clutch solenoid valve |
| Engine skids when driving at 4th. Or slipping occurred. | Fluid level and condition Line pressure Accelerator pedal position sensor Throttle position sensor CAN communication signal Oil pressure switch 3 and input clutch solenoid valve |
| Engine skids when driving at 5th. Or slipping occurred. | Fluid level and condition Line pressure Accelerator pedal position sensor Throttle position sensor CAN communication signal Oil pressure switch 1 and front brake solenoid valve |
| Slip at lock up. | Fluid level and condition Line pressure Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Lock up solenoid valve CAN communication signal |
| Maximum vehicle speed is low. | Fluid level and condition Line pressure Accelerator pedal position sensor Throttle position sensor CAN communication signal Direct clutch solenoid valve Front and rear vehicle speed sensors |
| There is completely no creep. | Fluid level and condition Engine speed signal CAN communication signal Oil pressure switch 4 and direct clutch solenoid valve Line pressure |
| Excessive large creep. | Engine speed signal CAN communication signal Oil pressure switch 4 |
| Vehicle cannot be parking condition on "P" range. Parking condition is not released though shifting to other ranges. | Inhibitor switch Control cable adjustment |
| Vehicle can drive on "P" range. | Inhibitor switch Fluid level and condition Control cable adjustment Line pressure |
| Vehicle can drive on "N" range. | Inhibitor switch Fluid level and condition Control cable adjustment Line pressure |
| Vehicle cannot drive at any range. | Fluid level and condition Line pressure Inhibitor switch Control cable adjustment Loosing or damaging of propeller shaft. Loosing or damaging of drive shaft. |
| Vehicle cannot drive on "D" range. | Fluid level and condition Line pressure Inhibitor switch Control cable adjustment Loosing or damaging of propeller shaft. Loosing or damaging of drive shaft. |
| Vehicle cannot drive on "R" range. | Fluid level and condition Line pressure Inhibitor switch Control cable adjustment Loosing or damaging of propeller shaft. Loosing or damaging of drive shaft. |
| Engine cannot start on "N" or "P" range. | Starter Control cable adjustment Inhibitor switch CAN communication line TCM |
| Engine start other than "N" or "P" range. | Starter Control cable adjustment Inhibitor switch TCM |
| Engine stalls. | Fluid level and condition Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Lock up solenoid valve Line pressure |
| Engine stalls when shifting to "N" --> "D" and "R" range. | Fluid level and condition Engine speed signal Turbine speed sensor 1 and turbine speed sensor 2 Lock up solenoid valve Line pressure |