Problem Symptoms Table

If a normal code is displayed during the diagnostic trouble code check although the trouble still occurs, check the electrical circuits for each symptom in the order given in the charts on the following pages and proceed to the page 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 on 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

HINT:

Fig 1: Electronic Circuit Matrix Chart

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Chapter 2: On-Vehicle Repair

(See OVERHAUL - A750E & A750F article for mechanical repair infomation.)

PROBLEM SYMPTOMS TABLE - AUTOMATIC TRANSMISSION - ON-VEHICLE REPAIR

Symptom	Suspect Area
Vehicle does not move in any forward position and reverse positions	Transmission control rod Manual valve Parking lock pawl Off-vehicle repair matrix chart
Vehicle does not move in R position	Valve body assy Off-vehicle repair matrix chart
No up-shift (1st-j 2nd)	Valve body assy Off-vehicle repair matrix chart
No up-shift (2nd → 3rd)	Valve body assy Off-vehicle repair matrix chart
No up-shift (3rd →4th)	Valve body assy Off-vehicle repair matrix chart
No up-shift (4th → 5th)	Valve body assy Off-vehicle repair matrix chart
No down-shift (5th → 4th)	Valve body assy Off-vehicle repair matrix chart
No down-shift (4th → 3rd)	Valve body assy Off-vehicle repair matrix chart
No down-shift (3rd → 2nd)	Valve body assy Off-vehicle repair matrix chart
No down-shift (2nd →1st)	Valve body assy Off-vehicle repair matrix chart
No lock-up or No lock-up off	Shift solenoid valve (SLU) Valve body assy Off-vehicle repair matrix chart
Harsh engagement {N → D)	Shift solenoid valve (SL1) Valve body assy C₁ , accumulator Off-vehicle repair matrix chart
Harsh engagement (Lock-up)	Shift solenoid valve (SLU) Valve body assy Off-vehicle repair matrix chart
Harsh engagement (N → R)	Shift solenoid valve (SLT) Shift solenoid valve (SLU) Valve body assy C₃ accumulator Off-vehicle repair matrix chart
Harsh engagement (1st → 2nd → 3rd → 4th → 5th)	Shift solenoid valve (SLT) Shift solenoid valve (SL1) Valve body assy
Harsh engagement (1st ↓ 2nd)	Valve body assy B₃ accumulator Off-vehicle repair matrix chart
Harsh engagement (2nd → 3rd)	Valve body assy C₃ accumulator Off-vehicle repair matrix chart
Harsh engagement (3rd → 4th)	Valve body assy C₂ accumulator Off-vehicle repair matrix chart
Harsh engagement (4th → 5th)	Shift solenoid valve (SL1) Shift solenoid valve (SL2) Valve body assy Off-vehicle repair matrix chart
Harsh engagement (5th → 4th)	Shift solenoid valve (SL1) Shift solenoid valve (SL2) Valve body assy Off-vehicle repair matrix chart
Slip or shudder (Forward and reverse)	Transmission control rod Valve body assy Oil strainer Off-vehicle repair matrix chart
No engine braking (1st: L position)	Valve body assy Off-vehicle repair matrix chart
No engine braking (2nd: 2 position)	Valve body assy Off-vehicle repair matrix chart
No kick-down	Valve body assy
Shift point too high or too low	Shift solenoid valve (SLT) Shift solenoid valve (SL1) Valve body assy
Poor acceleration	Shift solenoid valve (SLT) Valve body assy
Engine stalls when starting off or stopping	Shift solenoid valve (SLU) Valve body assy

Chapter 3: Off-Vehicle Repair

(See OVERHAUL - A750E & A750F article for mechanical repair infomation.)

PROBLEM SYMPTOMS TABLE - AUTOMATIC TRANSMISSION - OFF-VEHICLE REPAIR

Symptom	Suspect Area
Vehicle does not move in any forward position and reverse positions	Rear planetary gear unit Torque converter clutch
Vehicle does not move in R position	Brake No. 4 (B₄ ) Clutch No. 3 (C₃ ) One-way clutch No.4 (F₁ )
No up-shift (1st → 2nd)	Brake No. 3 (B₃ ) One-way clutch No.1 (F₁ ) One-way clutch No.2 (F₂ )
No up-shift (2nd → 3rd)	Clutch No. 3 (C₃ )
No up-shift (3rd → 4th)	Clutch No. 2 (C₂ )
No up-shift (4th → 5th)	Brake No. 1 (B₁ ) Clutch No. 1 (C₁ )
No lock-up or No lock-up off	Torque converter clutch
Harsh engagement (N → D)	Clutch No. 1 (C₁ ) One-way clutch No.3 (F₃ )
Harsh engagement (N → R)	Clutch No. 3 (C₃ ) Brake No. 4 (B₄ ) One-way clutch No.1 (F₁ )
Harsh engagement (1 → 2)	Brake No. 3 (B₃ ) One-way clutch No.1 (F₁ ) One-way clutch No. 2 (F₂ )
Harsh engagement (2 → 3)	Clutch No. 3 (C₃ )
Harsh engagement (3 → 4)	Clutch No. 2 (C₂ )
Harsh engagement (4 →5th)	Brake No. 1 (B₁ ) Clutch No. 1 (C₁ )
Harsh engagement (Lock-up)	Torque converter clutch
Slip or shudder (Forward and reverse: After warm-up)	One-way clutch No.1 (F₁ ) Clutch No. 3 (C₃ ) Torque converter clutch clutch
Slip or shudder (Particular position: Just after engine starts)	Torque converter clutch
Slip or shudder (R position)	Brake No. 4 (B₄ ) One-way clutch No.1 (F₁ ) Clutch No. 3 (C₃ )
Slip or shudder (1st)	Clutch No. 1 (C₁ ) One-way clutch No.3 (F₃ )
Slip or shudder (2nd)	Clutch No. 1 (C₁ ) Brake No. 3 (B₃ ) One-way clutch No.1 (F₁ ) One-way clutch No.2 (F₂ )
Slip or shudder (3rd)	Clutch No. 1 (C₁ ) Clutch No. 3 (C₃ ) One-way clutch No.1 (F₁ )
Slip or shudder (4th)	Clutch No. 1 (C₁ ) Clutch No. 2 (C₂ )
Slip or shudder (5th)	Clutch No. 2 (C₂ ) Clutch No. 3 (C₃ ) Brake No. 1 (B₁ )
No engine braking (1st - 4th: D position)	Clutch No. 1(C₁ )
No engine braking (1st: L position)	Brake No. 4 (B₄ )
No engine braking (2nd: 2 position)	Brake No. 2 (B₂ )
No engine braking (3rd: 3 position)	Brake No. 1 (B₁ )
Poor acceleration (All positions)	Torque converter clutch
Poor acceleration (5th)	Clutch No. 1 (C₁ ) Clutch No. 3 (C₃ ) Brake No. 1 (B₁ ) Front planetary gear unit
Engine stalls when starting off or stopping	Torque converter clutch