Problem Symptoms Table

If a normal code is displayed during the diagnostic trouble code check but the trouble still occurs, check the circuits for each symptom in the order given in the following charts and proceed to the test given for troubleshooting.

The Matrix Chart is divided into 3 chapters.

CHAPTER 1: ELECTRONIC CIRCUIT MATRIX CHART

CHAPTER 2: ON-VEHICLE REPAIR MATRIX CHART

CHAPTER 3: OFF-VEHICLE REPAIR MATRIX CHART

If the instruction "Proceed to next circuit inspection shown in matrix chart" is given in the flow chart for each circuit, proceed to the circuit with the next highest number in the table to continue the check.

If the trouble still occurs even though there are no abnormalities in any of the other circuits, then check and replace the ECM.

CHAPTER 1: ELECTRONIC CIRCUIT MATRIX CHART

Symptom/Suspect Area		See
No Up-Shift (A Particular Gear, From 1st To 3rd Gear, Is Not Up-Shifted)
	ECM	HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION
No Up-Shift (3rd -> O/D)
	1. O/D Main Switch & O/D OFF Indicator Light Circuit	O/D MAIN SWITCH & O/D OFF INDICTOR LIGHT CIRCUIT
	2. O/D Cancel Signal Circuit	O/D CANCEL SIGNAL CIRCUIT
	3. ECM	HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION
No Down-Shift (O/D -> 3rd)
	ECM	HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION
No Down-Shift (A Particular Gear, From 3rd To 1st Gear, Is Not Down-Shifted)
	ECM	HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION
No Lock-Up Or No Lock-Up Off
	ECM	HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION
Shift Point Too High Or Too Low
	ECM	HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION
Up-Shift To 2nd While In L Position
ECM		HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION
Up-Shift To 3rd While In 2 Position
ECM		HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION
Up-Shift To O/D From 3rd While O/D Main Switch Is OFF
1. O/D Main Switch & O/D OFF Indicator Light Circuit		O/D MAIN SWITCH & O/D OFF INDICTOR LIGHT CIRCUIT
2. ECM		HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION
Up-Shift To O/D From 3rd While Engine Is Cold
ECM		HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION
Harsh Engagement (N -> D)
ECM		HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION
Harsh Engagement (Any Driving Position)
ECM		HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION
Poor Acceleration
ECM		HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION
Engine Stalls When Starting Off Or Stopping
ECM		HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION
No Kick-Down
ECM		HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION

CHAPTER 2: ON-VEHICLE REPAIR MATRIX CHART

Symptom/Suspect Area

See

Vehicle Does Not Move In Any Forward Position & Reverse Position

1. Manual Valve

⁽¹⁾

2. Throttle Valve

⁽¹⁾

3. Primary Regulator Valve

⁽¹⁾

4. Off-Vehicle Repair Matrix Chart

.....

Vehicle Does Not Move In R Position

Off-Vehicle Repair Matrix Chart

.....

No Up-Shift (1st -> 2nd)

1. 1-2 Shift Valve

⁽¹⁾

2. Off-Vehicle Repair Matrix Chart

.....

No Up-Shift (2nd -> 3rd)

1. 2-3 Shift Valve

⁽¹⁾

2. Off-Vehicle Repair Matrix Chart

.....

No Up-Shift (3rd -> O/D)

1. 3-4 Shift Valve

⁽¹⁾

2. Off-Vehicle Repair Matrix Chart

.....

No Down-Shift (O/D -> 3rd)

3-4 Shift Valve

⁽¹⁾

No Down-Shift (3rd -> 2nd)

2-3 Shift Valve

⁽¹⁾

No Down-Shift (2nd -> 1st)

1-2 Shift Valve

⁽¹⁾

No Lock-Up Or No Lock-Up Off

1. Lock-Up Relay Valve

⁽¹⁾

2. Off-Vehicle Repair Matrix Chart

.....

Harsh Engagement (N -> D)

1. C₁ Accumulator

⁽¹⁾

2. Off-Vehicle Repair Matrix Chart

.....

Harsh Engagement (N -> R)

1. C₂ Accumulator

⁽¹⁾

2. Off-Vehicle Repair Matrix Chart

.....

Harsh Engagement (N -> L)

Low Coast Modulator

⁽¹⁾

Harsh Engagement (Lock-Up)

1. Lock-Up Relay Valve

⁽¹⁾

2. Off-Vehicle Repair Matrix Chart

.....

Harsh Engagement (1st -> 2nd -> 3rd -> O/D)

1. Throttle Modulator Valve

⁽¹⁾

2. Cut Back Valve

⁽¹⁾

3. Throttle Valve

⁽¹⁾

Harsh Engagement (2nd -> 3rd)

C₂ Accumulator

⁽¹⁾

Harsh Engagement (3rd -> O/D)

B₀ Accumulator

⁽¹⁾

Harsh Engagement (O/D -> 3rd)

C₀ Accumulator

⁽¹⁾

B₀ Accumulator

⁽¹⁾

Slip Or Shudder (Forward & Reverse)

1. Throttle Valve

⁽¹⁾

2. Oil Strainer

⁽¹⁾

3. Off-Vehicle Repair Matrix Chart

.....

No Engine Braking (1st: L Position)

1. Low Coast Modulator Valve

⁽¹⁾

2. Off-Vehicle Repair Matrix Chart

.....

No Engine Braking (2nd: 2 Position)

1. 2nd Coast Modulator Valve

⁽¹⁾

2. Off-Vehicle Repair Matrix Chart

.....

No Kick-Down

1. 1-2 Shift Valve

⁽¹⁾

2. 2-3 Shift Valve

⁽¹⁾

3. 3-4 Shift Valve

⁽¹⁾

⁽¹⁾	See OVERHAUL .

CHAPTER 3: OFF-VEHICLE REPAIR MATRIX CHART

Symptom/Suspect Area

See

Vechile Does Not Move In Any Forward Position & Reverse Position

1. Front & Rear Planetary Gear

⁽¹⁾

2. O/D Planetary Gear

⁽¹⁾

3. O/D One-Way Clutch (F₀ )

⁽¹⁾

4. O/D Direct Clutch (C₀ )

⁽¹⁾

5. Forward Clutch (C₁ )

⁽¹⁾

6. O/D Brake (B₀ )

⁽¹⁾

Vechile Does Not Move In R Position

1. Front & Rear Planetary Gear Unit

⁽¹⁾

2. Direct Clutch (C₂ )

⁽¹⁾

3. O/D Direct Clutch (C₀ )

⁽¹⁾

4. 1st & Reverse Brake (B₃ )

⁽¹⁾

No Up-Shift (1st -> 2nd)

1. No. 1 One-Way Clutch (F₁ )

⁽¹⁾

2. 2nd Brake (B₂ )

⁽¹⁾

No Up-Shift (2nd -> 3rd)

Direct Clutch (C₂ )

⁽¹⁾

No Up-Shift (3rd -> O/D)

O/D Brake (B₀ )

⁽¹⁾

No Lock-Up Or No Lock-Up Off

Torque Converter Clutch

.....

Harsh Engagement (N -> D)

1. Forward Clutch (C₁ )

⁽¹⁾

2. O/D One-Way Clutch (F₀ )

⁽¹⁾

3. No. 2 One-Way Clutch (F₂ )

⁽¹⁾

Harsh Engagement (N -> R)

1. Direct Clutch (C₂ )

⁽¹⁾

2. 1st & Reverse Brake (B₃ )

⁽¹⁾

Harsh Engagement (Lock-Up)

Torque Converter Clutch

.....

Slip Or Shudder (Forward Position: After Warm-Up)

1. Torque Converter Clutch

⁽¹⁾

2. O/D Direct Clutch (C₀ )

⁽¹⁾

3. Forward Clutch (C₁ )

⁽¹⁾

4. O/D One-Way Clutch (F₀ )

⁽¹⁾

Slip Or Shudder (R Position)

1. Direct Clutch (C₂ )

⁽¹⁾

2. 1st & Reverse Brake (B₃ )

⁽¹⁾

3. O/D Direct Clutch (C₀ )

⁽¹⁾

Slip Or Shudder (1st)

No. 2 One-Way Clutch (F₂ )

⁽¹⁾

Slip Or Shudder (2nd)

1. No. 1 One-Way Clutch (F₁ )

⁽¹⁾

2. 2nd Brake (B₂ )

⁽¹⁾

Slip Or Shudder (3rd)

Direct Clutch (C₂ )

⁽¹⁾

Slip Or Shudder (O/D)

O/D Brake (B₀ )

⁽¹⁾

No Engine Braking (1st ~ 3rd: D Position)

2nd Brake (B₂ )

⁽¹⁾

No Engine Braking (1st: L Position)

1st & Reverse Brake (B₃ )

⁽¹⁾

No Engine Braking (2nd: 2 Position)

2nd Coast Brake (B₂ )

⁽¹⁾

Poor Acceleration (All Position)

1. Torque Converter Clutch

.....

2. O/D Planetary Gear

⁽¹⁾

Poor Acceleration (O/D)

1. O/D Direct Clutch (C₀ )

⁽¹⁾

2. O/D Planetary Gear

⁽¹⁾

Large Shift Shock Or Engine Stalls When Starting Off Or Stopping

Torque Converter Clutch

.....

⁽¹⁾	See OVERHAUL .