Problem Symptoms Table

HINT:

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 2 chapters.

1. Chapter 1: Electronic Circuit Matrix Chart 
   • Refer to the figure below when the trouble cause is considered to be electrical.
   • If the instruction "Proceed to next circuit inspection shown on matrix chart" is given in the flow chart of 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, check and replace the ECM.

   HINT:

   *1: When the circuit on which mark *1 is attached is a malfunction, DTC could be output (see DIAGNOSTIC TROUBLE CODE TABLE  ).

   PROBLEM SYMPTOMS TABLE - AUTOMATIC TRANSMISSION (ELECTRONIC CIRCUITS)
   
   

   Symptom	Suspected Area
   No up-shift (1st → 2nd)	Shift solenoid valve (S1) circuit(1) ECM
   No up-shift (2nd → 3rd)	Shift solenoid valve (S2) circuit (1) ECM
   No up-shift (3rd → 4th)	Shift solenoid valve (S3) circuit (1) Engine coolant temp, sensor circuit (1) ECM
   No up-shift (4th → 5th)	Shift solenoid valve (S4) circuit (1) Shift solenoid valve (SR) circuit (1) Shift solenoid valve (SL1) circuit (1) Shift solenoid valve (SL2) circuit (1) ECM
   No up-shift (5th → 6th)	Park/neutral position switch circuit (1) Engine coolant temp, sensor circuit (1) Shift solenoid valve (S2) circuit (1) ECM
   No down-shift (6th → 5th)	Park/neutral position switch circuit (1) Shift solenoid valve (S2) circuit(1) ECM
   No down-shift (5th → 4th)	Shift solenoid valve (S4) circuit (1) Shift solenoid valve (SR) circuit (1) Shift solenoid valve (SL1) circuit (1) Shift solenoid valve (SL2) circuit (1) ECM
   No down-shift (4th → 3rd)	Shift solenoid valve (S3) circuit (1) ECM
   No down-shift (3rd → 2nd)	Shift solenoid valve (S2) circuit (1) ECM
   No down-shift (2nd → 1st)	Shift solenoid valve (S1) circuit (1) ECM
   No lock-up or No lock-up off	Shift solenoid valve (SLU) circuit (1) Stop light switch circuit (1) ECM
   No lock-up	Shift solenoid valve (SLU) circuit (1) Engine coolant temp, sensor circuit (1) Stop light switch circuit (1) Speed sensor NT circuit (1) ECM
   No lock-up off	Shift solenoid valve (SLU) circuit (1) ECM
   Shift point too high or too low	Shift solenoid valve (SLT) circuit (1) Speed sensor NT circuit (1) Speed sensor SP2 circuit (1) Throttle position sensor circuit (1) Pattern select (PWR) switch circuit ATF temperature sensor circuit (1) ECM
   Up-shift to 4th from 3rd while engine is cold	Engine coolant temp, sensor circuit (1) ECM
   Up-shift to 5th from 4th while engine is cold	Engine coolant temp, sensor circuit (1) ECM
   No gear change by shifting into "+" or "-" while the shift lever is in the S position	Transmission control switch circuit ECM
   Harsh engagement (N → D)	Shift solenoid valve (SLT) circuit (1) Speed sensor NT circuit (1) ECM
   Harsh engagement (Lock-up)	Speed sensor NT circuit (1) Speed sensor SP2 circuit (1) Shift solenoid valve (SLU) circuit (1) ECM
   Harsh engagement (Any driving position)	Throttle position sensor circuit (1) Shift solenoid valve (SL1) circuit (1) Shift solenoid valve (SL2) circuit (1) Shift solenoid valve (SLU) circuit (1) Shift solenoid valve (SLT) circuit (1) Speed sensor NT circuit (1) ECM
   Poor acceleration	Shift solenoid valve (SLT) circuit (1) Pattern select (SNOW) switch circuit ECM
   No engine braking	ECM
   No kick-down	ECM
   Engine stalls when starting off or stopping	Shift solenoid valve (SLU) circuit (1) ECM
   ECT SNOW does not operate	Shift solenoid valve (SLT) circuit (1) Pattern select (SNOW) switch circuit ECM
   Malfunction in shifting	Park/neutral position switch circuit (1) Transmission control switch circuit ECM
   Harsh engagement (1st →2nd → 3rd → 4th → 5th) Slip or shudder (5th → 6th and 6th → 5th)	Shift solenoid valve (SR) circuit (1)
   (1) When the circuit on which mark *1 is attached is a malfunction, DTC coult be output (See Diagnostic Trouble Code Chart).

2. Chapter 2: On-Vehicle Repair and Off-Vehicle Repair (*: A761E AUTOMATIC TRANSMISSION Repair Manual Pub. No. RM1050U) 
   PROBLEM SYMPTOMS TABLE - AUTOMATIC TRANSMISSION - ON AND OFF-VEHICLE REPAIR
   
   

   Symptom	Suspected Area
   Vehicle does not move in any forward position and reverse positions	Transmission control rod Manual valve Parking lock pawl Rear planetary gear unit Torque converter clutch
   Vehicle does not move in R position	Valve body assy Brake No. 4 (B4 )
   No up-shift(1st →2nd)	Valve body assy Brake No.3 (B3 ) One-way clutch No.1 (F1 ) One-way clutch No.2 (F2 )
   No up-shift (2nd → 3rd)	Valve body assy Clutch No.3 (C3 )
   No up-shift (3rd → 4th)	Valve body assy Clutch No.2 (C2 )
   No up-shift (4th → 5th)	Valve body assy Brake No.1 (B1 )
   No up-shift (5th → 6th)	Valve body assy Brake No.2 (B2 )
   No down-shift (6th → 5th)	Valve body assy
   No down-shift (5th → 4th)	Valve body assy
   No down-shift (4th → 3rd)	Valve body assy
   No down-shift (3rd → 2nd)	Valve body assy
   No down-shift (2nd → 1st)	Valve body assy
   No lock-up or No lock-up off	Valve body assy Torque converter clutch
   Harsh engagement (N → D)	Valve body assy C-i accumulator Clutch No.1 (CO1 ) One-way clutch No.3 (F3 ) One-way clutch No.4 (F4 )
   Harsh engagement (Lock-up)	Valve body assy Torque converter clutch
   Harsh engagement (N → R)	Valve body assy C3 accumulator Clutch No.3 (C3 ) Brake No.4 (B4 ) One-way clutch No.1 (F1)
   Harsh engagement (1st →2nd → 3rd → 4th → 5th → 6th)	Valve body assy
   Harsh engagement (1st → 2nd)	Valve body assy B3 accumulator Brake No.3 (B3 ) One-way clutch No.1 (F1 ) One-way clutch No.2 (F2 )
   Harsh engagement (2nd → 3rd)	Valve body assy C3 accumulator Clutch No.3 (C3 )
   Harsh engagement (3rd → 4th)	Valve body assy C2 accumulator Clutch No.2 (C2 )
   Harsh engagement (4th → 5th)	Valve body assy B2 accumulator Brake No.1 (B2 )
   Harsh engagement (5th → 6th)	Valve body assy B2 accumulator Brake No.2 (B2 )
   Harsh engagement (6th → 5th)	valve body assy C3 accumulator Clutch No.3 (C3 )
   Slip or shudder (Forward and reverse: After warm-up)	Valve body assy Oil strainer One-way clutch NO.1 (F1 ) Clutch No.3 (C3 ) Torque converter 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 ) One-way clutch No.4 (F4 )
   Slip or shudder (2nd)	Clutch No.1 (C1 ) Brake No.3 (B3 ) One-way clutch No.1 (F1 ) One-way clutch No.2 (F2 ) One-way clutch No.4 (F4 )
   Slip or shudder (3rd)	Clutch No.1 (C1 ) Clutch No.3 (C3 ) One-way clutch No.1 (F1 ) One-way clutch No.4 (F4 )
   Slip or shudder (4th)	Clutch No.1 (C1 ) Clutch No.2 (C2 ) One-way clutch No.4 (F4 )
   Slip or shudder (5th)	Clutch No.2 (C2 ) Clutch No.3 (C3 ) Brake No.1 (B1 )
   Slip or shudder (6th)	Clutch No.2 (C2 ) Brake No.2 (B2 )
   No engine braking (1st - 4th: S position)	Clutch No.4 (C4 )
   No engine braking (1st: 1 position)	Valve body assy Brake No.4 (B4 )
   No engine braking (2nd: 2 position)	Valve body assy Brake No.2 (B2 )
   No engine braking (3rd: 3 position)	Valve body assy Brake No.1 (B1 )
   No engine braking (4th: 4 position)	Valve body assy
   No Kick - down	Valve body assy
   Shift point too high or too low	Valve body assy
   Poor acceleration (All positions)	Valve body assy Torque converter clutch
   Poor acceleration (6th)	Brake No.2 (B2 ) Clutch No.2 (C2 ) Front planetary gear unit
   Engine stalls when starting off or stopping	Valve body assy Torque converter clutch