GSIC - Global Service Information Center

# ELECTRONIC CONTROLLED AUTOMATIC TRANSMISSION SYSTEM > PROBLEM SYMPTOMS TABLE

## for Preparation Click here

HINT:

1. 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.
2. The Matrix Chart is divided into 3 chapters. When troubleshooting, check Chapter 1 first. If instructions are given in Chapter 1 to proceed to 2 or 3, proceed as instructed.
3. 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.
4. If the problem still occurs even though there are no abnormalities in any of the circuits, check the TCM and replace it if necessary.

1. CHAPTER 1: ELECTRONIC CIRCUIT MATRIX CHART
Symptom | Suspected area | See page
No up-shift (1st -> 2nd) | TCM | Click here
No up-shift (2nd -> 3rd) | TCM | Click here
No up-shift (3rd -> O/D) | 1. Transmission control switch circuit | Click here
2. TCM | Click here
No down-shift (O/D -> 3rd) | 1. Transmission control switch circuit | Click here
2. TCM | Click here
No down-shift (3rd -> 2nd) | TCM | Click here
No down-shift (2nd -> 1st) | TCM | Click here
No lock-up or no lock-up off | 1. Stop light switch circuit | Click here
2. TCM | Click here
Shift point too high or too low | TCM | Click here
Up-shift to 2nd while shift lever is on L | 1. Park/Neutral position switch circuit | Click here
2. TCM | Click here
Up-shift to 3rd while shift lever is on 2 | 1. Park/Neutral position switch circuit | Click here
2. TCM | Click here
Up-shift to O/D from 3rd while shift lever is on 3 | 1. Transmission control switch circuit | Click here
2. TCM | Click here
Up-shift to O/D from 3rd while engine is cold | TCM | Click here
Poor acceleration | TCM | Click here
No kick-down | TCM | Click here
Engine stalls when starting off or stopping | TCM | Click here

2. CHAPTER 2: ON-VEHICLE REPAIR
Symptom | Suspected area | See page
Vehicle does not move in all positions other than P and N | 1. Shift solenoid valve SLT | Click here
2. Transmission control cable | Click here
3. Manual valve | Click here
4. Parking lock pawl | Click here
5. Off-vehicle repair matrix chart | -
Vehicle does not move when shift lever is on R | Off-vehicle repair matrix chart | -
Vehicle does not move in one or more positions other than P, N and R | Off-vehicle repair matrix chart | -
No up-shift (1st -> 2nd) | 1. 1-2 shift valve | Click here
2. Off-vehicle repair matrix chart | -
No up-shift (2nd -> 3rd) | 1. 2-3 shift valve | Click here
2. Off-vehicle repair matrix chart | -
No up-shift (3rd -> O/D) | 1. 3-4 shift valve | Click here
2. Off-vehicle repair matrix chart | -
No up-shift (O/D -> 3rd) | 1. 3-4 shift valve | Click here
2. Off-vehicle repair matrix chart | -
No up-shift (3rd -> 2nd) | 1. 2-3 shift valve | Click here
2. Off-vehicle repair matrix chart | -
No up-shift (2nd -> 1st) | 1. 1-2 shift valve | Click here
2. Off-vehicle repair matrix chart | -
No lock-up or no lock-up off | 1. Lock-up control valve | Click here
2. Lock-up relay valve | Click here
3. Off-vehicle repair matrix chart | -
Harsh engagement (N -> D) | 1. Accumulator control valve | Click here
2. Off-vehicle repair matrix chart | -
Harsh engagement (lock-up) | 1. Lock-up control valve | Click here
2. Lock-up relay valve | Click here
3. Off-vehicle repair matrix chart | -
Harsh engagement (N -> R) | 1. Accumulator control valve | Click here
2. C2 accumulator | Click here
3. Off-vehicle repair matrix chart | -
Harsh engagement (N -> L) | Low coast modulator valve | Click here
Harsh engagement (1st -> 2nd/shift lever on D) | 1. Accumulator control valve | Click here
2. B2 accumulator | Click here
Harsh engagement (1st -> 2nd/shift lever on 2) | 1. Accumulator control valve | Click here
2. B2 accumulator | Click here
Harsh engagement (1st -> 2nd -> 3rd -> O/D) | 1. Accumulator control valve | Click here
2. Throttle valve | Click here
Harsh engagement (2nd -> 3rd) | 1. Accumulator control valve | Click here
2. C2 accumulator | Click here
3. Off-vehicle repair matrix chart | -
Harsh engagement (3rd -> O/D) | 1. Accumulator control valve | Click here
2. Solenoid modulator valve | Click here
3. Off-vehicle repair matrix chart | -
Harsh engagement (O/D -> 3rd) | 1. Accumulator control valve | Click here
2. C0 accumulator | Click here
3. Off-vehicle repair matrix chart | -
Slip or shudder (shift lever forward and reverse position) | 1. Shift solenoid valve SLT | Click here
2. Transmission control cable | Click here
3. Oil strainer | Click here
4. Pressure relief valve | Click here
5. Off-vehicle repair matrix chart | -
Slip or shudder (particular shift lever position) | 1. Shift solenoid valve SLT | Click here
2. Transmission control cable | Click here
3. Off-vehicle repair matrix chart | -
No engine braking (1st/shift lever on L) | 1. Low coast modulator valve | Click here
2. Off-vehicle repair matrix chart | -
No engine braking (2nd/shift lever on 2) | 2. 2nd coast modulator valve | Click here
2. Off-vehicle repair matrix chart | -
No kick-down | 1. 1-2 shift valve | Click here
2. 2-3 shift valve | Click here

3. CHAPTER 3: OFF-VEHICLE REPAIR
Symptom | Suspected area | See page
Vehicle does not move in all positions other than P and N | 1. F0 O/D one-way clutch | Click here
2. C0 O/D direct clutch | Click here
3. B0 O/D brake | Click here
4. O/D planetary gear unit | Click here
5. Torque converter clutch | Click here
Vehicle does not move when shift lever is on R | 1. B1 2nd coast brake | Click here
2. Front and rear planetary gear unit | Click here
3. C2 direct clutch | Click here
4. B3 1st and reverse brake | Click here
5. C0 O/D direct clutch | Click here
Vehicle does not move when shift lever is on D, 2 and L | C2 forward clutch | Click here
Vehicle does not move when shift lever is on D and 2 | F2 one-way clutch | Click here
Vehicle does not move when shift lever is on 2 | B3 1st and reverse brake | Click here
Vehicle does not move when shift lever is on L | 1. B2 2nd brake | Click here
2. B1 2nd coast brake | Click here
3. C2 direct clutch | Click here
No up-shift (1st -> 2nd) | 1. B2 2nd brake | Click here
2. F1 one-way clutch | Click here
No up-shift (2nd -> 3rd) | C2 direct clutch | Click here
No up-shift (3rd -> O/D) | B0 O/D brake | Click here
No up-shift (2nd -> 1st) | 1. B1 2nd coast brake | Click here
2. B2 2nd brake | Click here
No lock-up or no lock-up off | Torque converter clutch | Click here
Harsh engagement (N -> D) | C1 Forward clutch | Click here
Harsh engagement (N -> R) | 1. C2 direct clutch | Click here
2. B3 1st and reverse brake | Click here
Harsh engagement (2nd -> 3rd) | B1 2nd coast brake | Click here
Harsh engagement (3rd -> O/D) | 1. C0 O/D direct clutch | Click here
2. B0 O/D brake | Click here
3. O/D planetary gear unit | Click here
Harsh engagement (O/D -> 3rd) | B0 O/D brake | Click here
Harsh engagement (lock-up) | Torque converter clutch | Click here
Slip or shudder (forward and reverse/after warm-up) | 1. Torque converter clutch | Click here
2. F0 O/D one-way clutch | Click here
3. C0 O/D direct clutch | Click here
Slip or shudder (forward and reverse/just after engine starts) | Torque converter clutch | Click here
Slip or shudder (shift lever on R) | 1. C2 direct clutch | Click here
2. B3 1st and reverse brake | Click here
Slip or shudder (1st) | 1. C1 forward clutch | Click here
2. B3 1st and reverse brake | Click here
Slip or shudder (2nd) | 1. B2 2nd brake | Click here
2. B1 2nd coast brake | Click here
3. F1 one-way clutch | Click here
Slip or shudder (3rd) | C2 direct clutch | Click here
Slip or shudder (O/D) | B0 O/D brake | Click here
No engine braking (3rd -> 1st/shift lever on D) | C0 O/D direct clutch | Click here
No engine braking (1st/shift lever on L) | B3 1st and reverse brake | Click here
No engine braking (2nd/shift lever on 2) | B1 2nd coast brake | Click here
Poor acceleration (all shift lever positions) | Torque converter clutch | Click here
Poor acceleration (O/D) | 1. C0 O/D direct clutch | Click here
2. O/D planetary gear unit | Click here
Poor acceleration (other than O/D) | B0 O/D brake | Click here
Poor acceleration (other than 2nd) | 1. B1 2nd coast brake | Click here
2. B2 2nd brake | Click here
Poor acceleration (1st and 2nd) | C2 direct clutch | Click here
Poor acceleration (shift lever on L and R) | B3 1st and reverse brake | Click here
Poor acceleration (shift lever on R) | C1 forward clutch | Click here
Engine stalls when starting off or stopping | Torque converter clutch | Click here