Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of the problem symptom. 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 Matrix Chart 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.
CHAPTER 1: ELECTRICAL CIRCUIT MATRIX CHART
SYMPTOMS REFERENCE
| Symptom | Suspected area | See page |
|---|---|---|
| No up-shift (1st -> 2nd) | ECM | |
| No up-shift (2nd -> 3rd) | ECM | |
| No up-shift (3rd -> O/D) | 1. Park / Neutral position switch circuit* | PARK / NEUTRAL POSITION SWITCH |
| 2. ECM | ||
| No down-shift (O/D -> 3rd) | ECM | |
| No down-shift (3rd -> 2nd) | ECM | |
| No down-shift (2nd -> 1st) | ECM | |
| No lock-up or no lock-up off | ECM | |
| Shift point too high or too low | ECM | |
| Up-shift to O/D from 3rd while shift lever is on 3 | 1. Park/Neutral position switch circuit* | PARK / NEUTRAL POSITION SWITCH |
| 2. ECM | ||
| Up-shift to O/D from 3rd while engine is cold | 1. Engine coolant temp. sensor circuit* | |
| 2. ECM | ||
| Harsh engagement (N -> D) | ECM | |
| Harsh engagement (lock-up) | ECM | |
| Harsh engagement (any driving position) | ECM | |
| Poor acceleration | ECM | |
| Engine stalls when starting off or stopping | ECM | |
| Malfunction in shifting | 1. Park/Neutral position switch circuit* | PARK / NEUTRAL POSITION SWITCH |
| 2. ECM |
HINT:
*: When the circuit is defective, a DTC may be output.
CHAPTER 2: ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR
SYMPTOMS REFERENCE
| Symptom | Suspected area | See page |
|---|---|---|
| Vehicle does not move in all positions other than P and N | 1. Manual valve | AUTOMATIC TRANSAXLE UNIT |
| 2. Primary regulator valve | AUTOMATIC TRANSAXLE UNIT | |
| 3. Front and rear planetary gear | AUTOMATIC TRANSAXLE UNIT | |
| 4. U/D planetary gear | AUTOMATIC TRANSAXLE UNIT | |
| 5. F2 U/D one-way clutch | AUTOMATIC TRANSAXLE UNIT | |
| 6. C1 forward clutch | AUTOMATIC TRANSAXLE UNIT | |
| 7. B3 U/D brake | AUTOMATIC TRANSAXLE UNIT | |
| Vehicle does not move with shift lever on R | 1. Front and rear planetary gear | AUTOMATIC TRANSAXLE UNIT |
| 2. U/D planetary gear | AUTOMATIC TRANSAXLE UNIT | |
| 3. C2 direct clutch | AUTOMATIC TRANSAXLE UNIT | |
| 4. C3 U/D brake | AUTOMATIC TRANSAXLE UNIT | |
| 5. B2 1st and reverse brake | AUTOMATIC TRANSAXLE UNIT | |
| No up-shift (1st -> 2nd) | 1. Valve body assembly | VALVE BODY |
| 2. F1 No. 1 one-way clutch | AUTOMATIC TRANSAXLE UNIT | |
| 3. B1 2nd brake | AUTOMATIC TRANSAXLE UNIT | |
| No up-shift (2nd -> 3rd) | 1. Valve body assembly | VALVE BODY |
| 2. C2 direct clutch | AUTOMATIC TRANSAXLE UNIT | |
| No up-shift (3rd -> O/D) | 1. 3-4 shift valve | AUTOMATIC TRANSAXLE UNIT |
| 2. C3 U/D clutch | AUTOMATIC TRANSAXLE UNIT | |
| No down-shift (O/D -> 3rd) | 3-4 shift valve | AUTOMATIC TRANSAXLE UNIT |
| No down-shift (3rd -> 2nd) | Valve body assembly | VALVE BODY |
| No down-shift (2nd -> 1st) | Valve body assembly | VALVE BODY |
| No lock-up or no lock-up off | 1. Lock-up relay valve | AUTOMATIC TRANSAXLE UNIT |
| 2. Torque converter clutch | TORQUE CONVERTER AND DRIVE PLATE | |
| Harsh engagement (N -> D) | 1. C1 accumulator | AUTOMATIC TRANSAXLE UNIT |
| 2. Valve body assembly | VALVE BODY | |
| 3. C1 forward clutch | AUTOMATIC TRANSAXLE UNIT | |
| 4. F2 U/D one-way clutch | AUTOMATIC TRANSAXLE UNIT | |
| 5. F1 No. 1 one-way clutch | AUTOMATIC TRANSAXLE UNIT | |
| Harsh engagement (N -> R) | 1. Valve body assembly | VALVE BODY |
| 2. C2 direct clutch | AUTOMATIC TRANSAXLE UNIT | |
| 3. B2 1st and reverse brake | AUTOMATIC TRANSAXLE UNIT | |
| Harsh engagement (Lock-up) | 1. Lock-up relay valve | AUTOMATIC TRANSAXLE UNIT |
| 2. Torque converter clutch | TORQUE CONVERTER AND DRIVE PLATE | |
| Harsh engagement (2nd -> 3rd) | Valve body assembly | VALVE BODY |
| Harsh engagement (3rd -> O/D) | Valve body assembly | VALVE BODY |
| Harsh engagement (O/D -> 3rd) | Valve body assembly | VALVE BODY |
| Slip or shudder (forward position, after warm-up) | 1. Oil strainer | VALVE BODY |
| 2. Torque converter clutch | TORQUE CONVERTER AND DRIVE PLATE | |
| 3. C1 forward clutch | AUTOMATIC TRANSAXLE UNIT | |
| 4. C2 direct clutch | AUTOMATIC TRANSAXLE UNIT | |
| 5. C3 U/D brake | AUTOMATIC TRANSAXLE UNIT | |
| 6. F1 No. 1 one-way clutch | AUTOMATIC TRANSAXLE UNIT | |
| 7. F2 U/D one-way clutch | AUTOMATIC TRANSAXLE UNIT | |
| Slip or shudder (shift lever on R) | 1. Oil strainer | VALVE BODY |
| 2. C2 direct clutch | AUTOMATIC TRANSAXLE UNIT | |
| 3. B2 1st and reverse brake | AUTOMATIC TRANSAXLE UNIT | |
| Slip or shudder (1st) | F1 No. 1 one-way clutch | AUTOMATIC TRANSAXLE UNIT |
| Slip or shudder (2nd) | 1. F2 U/D one-way clutch | AUTOMATIC TRANSAXLE UNIT |
| 2. B1 2nd brake | AUTOMATIC TRANSAXLE UNIT | |
| Slip or shudder (3rd) | C2 direct clutch | AUTOMATIC TRANSAXLE UNIT |
| Slip or shudder (O/D) | C3 U/D clutch | AUTOMATIC TRANSAXLE UNIT |
| No engine braking (1st to 3rd/shift lever on D) | B3 U/D brake | AUTOMATIC TRANSAXLE UNIT |
| No engine braking (1st/shift lever on L) | B2 1st and reverse brake | AUTOMATIC TRANSAXLE UNIT |
| No engine braking (2nd/shift lever on 2) | B1 2nd brake | AUTOMATIC TRANSAXLE UNIT |
| Poor acceleration (all positions) | 1. Torque converter clutch | TORQUE CONVERTER AND DRIVE PLATE |
| 2. U/D planetary gear | AUTOMATIC TRANSAXLE UNIT | |
| Poor acceleration (O/D) | 1. C3 U/D clutch | AUTOMATIC TRANSAXLE UNIT |
| 2. U/D planetary gear | AUTOMATIC TRANSAXLE UNIT | |
| Large shift shock or engine stalls when starting off or stopping | Torque converter clutch | TORQUE CONVERTER AND DRIVE PLATE |
| No kick-down | Valve body assembly | VALVE BODY |