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 on 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
ELECTRICAL CIRCUIT MATRIX CHART
| Symptom | Suspected area | See Procedure | ||
|---|---|---|---|---|
| No up shift (1st -> 2nd) | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE | ||
| No up shift (2nd -> 3rd) | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE | ||
| No up shift (3rd -> O/D) | 1. Park/Neutral position switch circuit (1) | PARK / NEUTRAL POSITION SWITCH | ||
| 2. ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE | |||
| No down-shift (O/D -> 3rd) | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE | ||
| No down-shift (3rd -> 2nd) | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE | ||
| No down-shift (2nd -> 1st) | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE | ||
| No lock up or no lock up off | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE | ||
| Shift point too high or too low | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE | ||
| Upshift to O/D from 3rd while shift lever is on 3 | 1. Park/Neutral position switch circuit (1) | PARK / NEUTRAL POSITION SWITCH | ||
| 2. ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE | |||
| Upshift to O/D from 3rd while engine is cold | 1. Engine coolant temp. sensor circuit (1) | DTC CHECK / CLEAR | ||
| 2. ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE | |||
| Harsh engagement (N -> D) | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE | ||
| Harsh engagement (lock up) | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE | ||
| Harsh engagement (any driving position) | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE | ||
| Poor acceleration | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE | ||
| Engine stalls when starting off or stopping | ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE | ||
| Malfunction in shifting | 1. Park/Neutral position switch circuit (1) | PARK / NEUTRAL POSITION SWITCH | ||
| 2. ECM | ELECTRONIC CIRCUIT INSPECTION PROCEDURE | |||
|
||||
CHAPTER 2: ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR
SYMPTOM REFERENCE CHART
| Symptom | Suspected area | See Procedure | ||
|---|---|---|---|---|
| Vehicle does not move in all positions other than P and N | 1. Manual valve | (1) | ||
| 2. Primary regulator valve | (1) | |||
| 3. Front and rear planetary gear | (1) | |||
| 4. U/D planetary gear | (1) | |||
| 5. F2 U/D one-way clutch | (1) | |||
| 6. C1 forward clutch | (1) | |||
| 7. B3 U/D brake | (1) | |||
| Vehicle does not move with shift lever on R | 1. Front and rear planetary gear | (1) | ||
| 2. U/D planetary gear | (1) | |||
| 3. C2 direct clutch | (1) | |||
| 4. C3 U/D brake | (1) | |||
| 5. B2 1st and reverse brake | (1) | |||
| No up shift (1st -> 2nd) | 1. Valve body assembly | VALVE BODY ASSEMBLY | ||
| 2. F1 No. 1 one-way clutch | (1) | |||
| 3. B1 2nd brake | (1) | |||
| No up shift (2nd -> 3rd) | 1. Valve body assembly | VALVE BODY ASSEMBLY | ||
| 2. C2 direct clutch | (1) | |||
| No up shift (3rd -> O/D) | 1. 3-4 shift valve | (1) | ||
| 2. C3 U/D clutch | (1) | |||
| No down-shift (O/D -> 3rd) | 3-4 shift valve | (1) | ||
| No down-shift (3rd -> 2nd) | Valve body assembly | VALVE BODY ASSEMBLY | ||
| No down-shift (2nd -> 1st) | Valve body assembly | VALVE BODY ASSEMBLY | ||
| No lock up or no lock up off | 1. Lock up relay valve | (1) | ||
| 2. Torque converter clutch | INSPECTION | |||
| Harsh engagement (N -> D) | 1. C1 accumulator | (1) | ||
| 2. Valve body assembly | VALVE BODY ASSEMBLY | |||
| 3. C1 forward clutch | (1) | |||
| 4. F2 U/D one-way clutch | (1) | |||
| 5. F1 No. 1 one-way clutch | (1) | |||
| Harsh engagement (N -> R) | 1. Valve body assembly | VALVE BODY ASSEMBLY | ||
| 2. C2 direct clutch | (1) | |||
| 3. B2 1st and reverse brake | (1) | |||
| Harsh engagement (Lock up) | 1. Lock up relay valve | (1) | ||
| 2. Torque converter clutch | (1) | |||
| Harsh engagement (2nd -> 3rd) | Valve body assembly | VALVE BODY ASSEMBLY | ||
| Harsh engagement (3rd -> O/D) | Valve body assembly | VALVE BODY ASSEMBLY | ||
| Harsh engagement (O/D -> 3rd) | Valve body assembly | VALVE BODY ASSEMBLY | ||
| Slip or shudder (forward position: after warm-up) | 1. Oil strainer | VALVE BODY ASSEMBLY | ||
| 2. Torque converter clutch | INSPECTION | |||
| 3. C1 forward clutch | (1) | |||
| 4. C2 direct clutch | (1) | |||
| 5. C3 U/D brake | (1) | |||
| 6. F1 No. 1 one-way clutch | (1) | |||
| 7. F2 U/D one-way clutch | (1) | |||
| Slip or shudder (shift lever on R) | 1. Oil strainer | VALVE BODY ASSEMBLY | ||
| 2. C2 direct clutch | (1) | |||
| 3. B2 1st and reverse brake | (1) | |||
| Slip or shudder (1st) | F1 No. 1 one-way clutch | (1) | ||
| Slip or shudder (2nd) | 1. F2 U/D one-way clutch | (1) | ||
| 2. B1 2nd brake | (1) | |||
| Slip or shudder (3rd) | C2 direct clutch | (1) | ||
| Slip or shudder (O/D) | C3 U/D clutch | (1) | ||
| No engine braking (1st to 3rd/shift lever on D) | B3 U/D brake | (1) | ||
| No engine braking (1st/shift lever on L) | B2 1st and reverse brake | (1) | ||
| No engine braking (2nd/shift lever on 2) | B1 2nd brake | (1) | ||
| Poor acceleration (all positions) | 1. Torque converter clutch | INSPECTION | ||
| 2. U/D planetary gear | (1) | |||
| Poor acceleration (O/D) | 1. C3 U/D clutch | (1) | ||
| 2. U/D planetary gear | (1) | |||
| Large shift shock or engine stalls when starting off or stopping | Torque converter clutch | INSPECTION | ||
| No kick down | Valve body assembly | VALVE BODY ASSEMBLY | ||
|
||||