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 3 chapters. When troubleshooting, check Chapter 1 first. If instructions are given in Chapter 2 to proceed to 3, 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
PROBLEM SYMPTOM - ELECTRICAL CIRCUIT MATRIX CHART
| Symptom | Suspected area |
|---|---|
| No up shift (a particular gear, from 1st to 3rd gear, is not up-shifted) | ECM |
| No up shift (3rd -> O/D) | 1. O/D MAIN SWITCH CIRCUIT |
| 2. ECM | |
| No down shift (O/D -> 3rd) | 1. O/D MAIN SWITCH CIRCUIT |
| 2. 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 | 1. STOP LIGHT SWITCH CIRCUIT |
| 2. ENGINE COOLANT TEMPERATURE SENSOR CIRCUIT | |
| 3. THROTTLE POSITION SENSOR CIRCUIT | |
| 4. ECM | |
| Shift point too high or too low | ECM |
| Up shift to 2nd while shift lever on L | ECM |
| Up shift to 3rd while shift lever on 2 | ECM |
| Up shift to O/D from 3rd while O/D main switch is OFF | 1. O/D MAIN SWITCH CIRCUIT |
| 2. ECM | |
| Up shift to O/D from 3rd while engine is cold | 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 |
| No kick down | ECM |
| Malfunction in shifting | 1. PARK/NEUTRAL POSITION SWITCH CIRCUIT |
| 2. ECM |
CHAPTER 2: ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR
PROBLEM SYMPTOM - ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR
CHAPTER 3: OFF-VEHICLE REPAIR
PROBLEM SYMPTOM - OFF-VEHICLE REPAIR
| Symptom | Suspected area |
|---|---|
| Vehicle does not move in any forward position and reverse position | 1. PLANETARY GEAR UNIT |
| 2. FORWARD CLUTCH | |
| 3. NO. 2 ONE-WAY CLUTCH | |
| 4. REVERSE CLUTCH | |
| 5. 1ST AND REVERSE BRAKE | |
| Vehicle does not move with shift lever on R | 1. PLANETARY GEAR UNIT |
| 2. REVERSE CLUTCH | |
| 3. 1ST AND REVERSE BRAKE | |
| No up shift (1st -> 2nd) | 1. 2ND BRAKE |
| 2. NO. 1 ONE-WAY CLUTCH | |
| No up shift (2nd -> 3rd) | DIRECT CLUTCH |
| No up shift (3rd -> O/D) | O/D AND 2ND BRAKE |
| No lock up or no lock up off | TORQUE CONVERTER CLUTCH |
| Harsh engagement (N -> D) | 1. FORWARD CLUTCH |
| 2. NO. 2 ONE-WAY CLUTCH | |
| Harsh engagement (N -> R) | 1. REVERSE CLUTCH |
| 2. 1ST AND REVERSE BRAKE | |
| Harsh engagement (lock up) | TORQUE CONVERTER CLUTCH |
| Harsh engagement (1st -> 2nd) | 1. 2ND BRAKE |
| 2. NO. 1 ONE-WAY CLUTCH | |
| Harsh engagement (2nd -> 3rd) | DIRECT CLUTCH |
| Harsh engagement (3rd -> O/D) | O/D AND 2ND BRAKE |
| Slip or shudder (forward position) | 1. TORQUE CONVERTER CLUTCH |
| 2. FORWARD CLUTCH | |
| 3. DIRECT CLUTCH | |
| 4. O/D AND 2ND BRAKE | |
| 5. 2ND BRAKE | |
| 6. NO. 1 ONE-WAY CLUTCH | |
| 7. NO. 2 ONE-WAY CLUTCH | |
| Slip or shudder (reverse position) | 1. REVERSE CLUTCH |
| 2. 1ST AND REVERSE BRAKE | |
| Slip or shudder (1st) | NO. 2 ONE-WAY CLUTCH |
| Slip or shudder (2nd) | 1. 2ND BRAKE |
| 2. NO. 1 ONE-WAY CLUTCH | |
| Slip or shudder (3rd) | DIRECT CLUTCH |
| Slip or shudder (O/D) | O/D AND 2ND BRAKE |
| No engine braking (1st/shift lever on L ) | 1ST AND REVERSE BRAKE |
| No engine braking (2nd/shift lever on 2 ) | O/D AND 2ND BRAKE |
| Poor acceleration (all positions) | TORQUE CONVERTER CLUTCH |
| Large shift shock or engine stalls when starting off or stopping | TORQUE CONVERTER CLUTCH |