U340E AUTOMATIC TRANSMISSION / TRANSAXLE AUTOMATIC TRANSAXLE SYSTEM PROBLEM SYMPTOMS TABLE
- HINT:
- ·
Use the table below to help determine the cause of the problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
·The problem symptoms table is divided into 2 chapters. When troubleshooting, check Chapter 1 first. If instructions are given in Chapter 1 to proceed to 2, proceed as instructed.
·If the instruction "Proceed to next circuit inspection shown in problem symptoms table" is given in the flowchart for each circuit, proceed to the next suspected area in the table.
·If the problem still occurs even though there are no malfunctions in any of the circuits, check the ECM and replace it if necessary.
·*: When the circuit is defective, a DTC may be output.
| Symptom | Suspected Area | Link |
|---|---|---|
| No up-shift (A particular gear, from 1st to 3rd gear, is not up-shifted) | ECM | 
|
| No up-shift (3rd to 4th) | Transmission control switch circuit* |
|
| ECM |
|
|
| No down-shift (4th to 3rd) | Transmission control switch circuit* |
|
| ECM |
|
|
| No down-shift (A particular gear, from 3rd to 1st gear, is not down-shifted) | ECM |
|
| No lock-up or no lock-up off | Stop light switch circuit* |
|
| Engine coolant temp. sensor circuit* |
|
|
| ECM |
|
|
| Shift point too high or too low | Throttle position sensor circuit* |
|
| Engine coolant temp. sensor circuit* |
|
|
| ECM |
|
|
| Up-shift to 4th from 3rd while shift lever is in 3 | Transmission control switch circuit* |
|
| ECM |
|
|
| Up-shift to 4th from 3rd while engine is cold | Engine coolant temp. sensor circuit* |
|
| ECM |
|
|
| Harsh engagement (N to D) | ECM |
|
| Harsh engagement (Lock-up) | ECM |
|
| Harsh engagement (Any driving position) | ECM |
|
| Poor acceleration | ECM |
|
| Engine stalls when starting off or stopping | ECM |
|
| No kick-down | ECM |
|
| Malfunction in shifting | Park/neutral position switch circuit* |
|
| ECM |
|
| Symptom | Suspected Area | Link |
|---|---|---|
| Vehicle does not move in any forward position and reverse position | Manual valve |
|
| Valve body assembly |
|
|
| Planetary gear unit |
|
|
| Forward clutch |
|
|
| No. 2 one-way clutch |
|
|
| Reverse clutch |
|
|
| 1st and reverse brake |
|
|
| Vehicle does not move with shift lever in R | Manual valve |
|
| Planetary gear unit |
|
|
| Reverse Clutch |
|
|
| 1st and reverse brake |
|
|
| No up-shift (1st to 2nd) | Valve body assembly |
|
| 2nd brake |
|
|
| No. 1 one-way clutch |
|
|
| No up-shift (2nd to 3rd) | Valve body assembly |
|
| Direct clutch |
|
|
| No up-shift (3rd to 4th) | Valve body assembly |
|
| O/D and 2nd brake |
|
|
| No down-shift (4th to 3rd) | Valve body assembly |
|
| No down-shift (3rd to 2nd) | Valve body assembly |
|
| No down-shift (2nd to 1st) | Valve body assembly |
|
| No lock-up or no lock-up off | Shift solenoid valve SLU |
|
| Valve body assembly |
|
|
| Torque converter assembly |
|
|
| Harsh engagement (N to D) | Valve body assembly |
|
| Forward clutch |
|
|
| No. 2 one-way clutch |
|
|
| Harsh engagement (N to R) | C3 accumulator |
|
| Valve body assembly |
|
|
| Reverse clutch |
|
|
| 1st and reverse brake |
|
|
| Harsh engagement (Lock-up) | Valve body assembly |
|
| Torque converter assembly |
|
|
| Harsh engagement (1st to 2nd) | B2 accumulator |
|
| Valve body assembly |
|
|
| 2nd brake |
|
|
| No. 1 one-way clutch |
|
|
| Harsh engagement (2nd to 3rd) | C2 accumulator |
|
| Valve body assembly |
|
|
| Direct clutch |
|
|
| Harsh engagement (3rd to 4th) | Shift solenoid valve ST |
|
| Valve body assembly |
|
|
| O/D and 2nd brake |
|
|
| Harsh engagement (4th to 3rd) | Valve body assembly |
|
| Shift solenoid valve ST |
|
|
| Harsh engagement (D, 2, L) | Shift solenoid valve SLT |
|
| Valve body assembly |
|
|
| Slip or shudder (Forward position) | Valve body assembly |
|
| Oil strainer |
|
|
| Torque converter assembly |
|
|
| Forward clutch |
|
|
| Direct clutch |
|
|
| O/D and 2nd brake |
|
|
| 2nd brake |
|
|
| No. 1 one-way clutch |
|
|
| No. 2 one-way clutch |
|
|
| Slip or shudder (Shift lever in R) | Oil strainer |
|
| Valve body assembly |
|
|
| Reverse clutch |
|
|
| 1st and reverse brake |
|
|
| Slip or shudder (1st) | No. 2 one-way clutch |
|
| Slip or shudder (2nd) | 2nd brake |
|
| No. 1 one-way clutch |
|
|
| Slip or shudder (3rd) | Direct clutch |
|
| Slip or shudder (4th) | O/D and 2nd brake |
|
| Shift point too high or too low | Shift solenoid valve SLT |
|
| No engine braking (1st: L) | Valve body assembly |
|
| 1st and reverse brake |
|
|
| No engine braking (2nd: 2) | Valve body assembly |
|
| O/D and 2nd brake |
|
|
| No kick-down | Valve body assembly |
|
| Poor acceleration (All shift lever positions) | Shift solenoid valve SLT |
|
| Valve body assembly |
|
|
| Torque converter assembly |
|
|
| Large shift shock or engine stalls when starting off or stopping | Torque converter assembly |
|
| Engine stalls when starting off or stopping | Shift solenoid valve SLU |
|
| Torque converter assembly |
|