FixVault

Problem Symptoms Table

HINT:

Refer to the ELECTRONIC CIRCUIT MATRIX CHART  below when the trouble cause is considered to be electrical 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.

1. Chapter 1: Electronic Circuit Matrix Chart 

ELECTRONIC CIRCUIT MATRIX CHART

Symptom Suspected area See
No down-shift (A particular gear, from 1st to 4th gear, is not down-shifted) ECM ELECTRONIC CIRCUIT INSPECTION PROCEDURE
No down-shift (5th -> 4th) 1. Park/neutral position switch circuit *1 DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT) 
2. Shift solenoid valve (S4) circuit *1 DTC P0982 SHIFT SOLENOID "D" CONTROL CIRCUIT LOW (SHIFT SOLENOID VALVE S4); DTC P0983 SHIFT SOLENOID DTC P0983 SHIFT SOLENOID "D" CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE S4) 
3. ECM ELECTRONIC CIRCUIT INSPECTION PROCEDURE
No up-shift (A particular gear, from 1st to 4th gear, is not up-shifted) ECM ELECTRONIC CIRCUIT INSPECTION PROCEDURE
No up-shift (4th -> 5th) 1. Park/neutral position switch circuit *1 DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT) 
2. Shift solenoid valve (S4) circuit *1 DTC P0982 SHIFT SOLENOID "D" CONTROL CIRCUIT LOW (SHIFT SOLENOID VALVE S4); DTC P0983 SHIFT SOLENOID DTC P0983 SHIFT SOLENOID "D" CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE S4) 
3. ECM ELECTRONIC CIRCUIT INSPECTION PROCEDURE
No lock-up 1. Stop light switch circuit *1 DTC P0724 BRAKE SWITCH "B" CIRCUIT HIGH 
2. Engine coolant temp. sensor circuit *1 DIAGNOSTIC TROUBLE CODE CHART
3. ECM ELECTRONIC CIRCUIT INSPECTION PROCEDURE
No lock-up off ECM ELECTRONIC CIRCUIT INSPECTION PROCEDURE
Shift point too high or too low 1. Throttle position sensor circuit *1 DIAGNOSTIC TROUBLE CODE CHART
2. ECM ELECTRONIC CIRCUIT INSPECTION PROCEDURE
Up-shift to 5th from 4th while engine is cold 1. Engine coolant temp. sensor circuit *1 DIAGNOSTIC TROUBLE CODE CHART
2. ECM ELECTRONIC CIRCUIT INSPECTION PROCEDURE
No gear change by shifting into "+" or "-" while the shifting lever is in the S position 1. Transmission control switch circuit TRANSMISSION CONTROL SWITCH CIRCUIT 
2. ECM ELECTRONIC CIRCUIT INSPECTION PROCEDURE
Harsh engagement (N -> D) 1. Shift solenoid valve (SL1) circuit *1 DTC P0748 PRESSURE CONTROL SOLENOID "A" ELECTRICAL (SHIFT SOLENOID VALVE SL1) 
2. 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
No kick-down 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 DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT MALFUNCTION (PRNDL INPUT) 
2. Transmission control switch circuit TRANSMISSION CONTROL SWITCH CIRCUIT 
3. ECM ELECTRONIC CIRCUIT INSPECTION PROCEDURE

2. Chapter 2: On-Vehicle Repair and Off-Vehicle Repair 

ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR SYMPTOMS REFERENCE

Symptom Suspected area See
Vehicle does not move in any forward position and in reverse positions 1. Valve body assembly REMOVAL 
2. U/D brake (B3) DISASSEMBLY 
3. Torque converter clutch TORQUE CONVERTER CLUTCH AND DRIVE PLATE 
Vehicle does not move in R position 1. Valve body assembly REMOVAL 
2. Reverse clutch (C2) DISASSEMBLY 
3. 1st and reverse brake (B2) DISASSEMBLY 
No up-shift (1st -> 2nd) 1. Valve body assembly REMOVAL 
2. 2nd and O/D brake (B1) DISASSEMBLY 
No up-shift (2nd -> 3rd) 1. Valve body assembly REMOVAL 
2. Direct and O/D clutch (C0) DISASSEMBLY 
No up-shift (3rd -> 4th) 1. Valve body assembly REMOVAL 
2. 2nd and O/D brake (B1) DISASSEMBLY 
No up-shift (4th -> 5th) 1. Shift solenoid valve (S4) DTC P0766 SHIFT SOLENOID "D" PERFORMANCE (SHIFT SOLENOID VALVE S4) 
2. Valve body assembly REMOVAL 
3. U/D clutch (C3) DISASSEMBLY 
No down-shift (5th -> 4th) 1. Shift solenoid (S4) DTC P0766 SHIFT SOLENOID "D" PERFORMANCE (SHIFT SOLENOID VALVE S4) 
2. Valve body assembly REMOVAL 
No down-shift (4th -> 3rd) Valve body assembly REMOVAL 
No down-shift (3rd -> 2nd) Valve body assembly REMOVAL 
No down-shift (2nd -> 1st) Valve body assembly REMOVAL 
No lock-up or No lock-up off 1. Shift solenoid valve (DSL) DTC P0741 TORQUE CONVERTER CLUTCH SOLENOID PERFORMANCE (SHIFT SOLENOID VALVE DSL) 
2. Valve body assembly REMOVAL 
3. Torque converter clutch TORQUE CONVERTER CLUTCH AND DRIVE PLATE 
Harsh engagement (N -> D) 1. Shift solenoid valve (SL1) DTC P0746 PRESSURE CONTROL SOLENOID "A" PERFORMANCE (SHIFT SOLENOID VALVE SL1) 
2. Valve body assembly REMOVAL 
3. C1 accumulator DISASSEMBLY 
4. Forward clutch (C1) DISASSEMBLY 
5. One-way clutch No.1 (F1) DISASSEMBLY 
6. U/D one-way clutch (F2) DISASSEMBLY 
Harsh engagement (Lock-up) 1. Shift solenoid valve (SL2) DTC P0776 PRESSURE CONTROL SOLENOID "B" PERFORMANCE (SHIFT SOLENOID VALVE SL2) 
2. Valve body assembly REMOVAL 
3. Torque converter clutch TORQUE CONVERTER CLUTCH AND DRIVE PLATE 
Harsh engagement (N -> R) 1. Valve body assembly REMOVAL 
2. C2 accumulator DISASSEMBLY 
3. Reverse clutch (C2) DISASSEMBLY 
4. 1st and reverse brake (B2) DISASSEMBLY 
Harsh engagement (1st -> 2nd -> 3rd -> 4th -> 5th) 1. Shift solenoid valve (SLT) DTC P2716 PRESSURE CONTROL SOLENOID "D" ELECTRICAL (SHIFT SOLENOID VALVE SLT) 
2. Valve body assembly REMOVAL 
Harsh engagement (1st -> 2nd) 1. Valve body assembly REMOVAL 
2. 2nd and O/D brake (B1) DISASSEMBLY 
Harsh engagement (2nd -> 3rd) 1. Valve body assembly REMOVAL 
2. C0 accumulator DISASSEMBLY 
3. Direct and O/D clutch (C0) DISASSEMBLY 
Harsh engagement (3rd -> 4th) 1. Valve body assembly REMOVAL 
2. 2nd and O/D brake (B1) DISASSEMBLY 
Harsh engagement (4th -> 5th) 1. Valve body assembly REMOVAL 
2. C3 accumulator DISASSEMBLY 
3. U/D clutch (B3) DISASSEMBLY 
Harsh engagement (5th -> 4th) 1. Valve body assembly REMOVAL 
2. B3 accumulator DISASSEMBLY 
Slip or shudder (Forward and reverse: After warm-up) 1. Valve body assembly REMOVAL 
2. Oil strainer REMOVAL 
3. Direct and O/D clutch (C0) DISASSEMBLY 
4. Forward clutch (C1) DISASSEMBLY 
5. U/D clutch (C3) DISASSEMBLY 
6. 2nd and brake (B1) DISASSEMBLY 
7. U/D brake (B3) DISASSEMBLY 
8. One-way clutch No.1 (F1) DISASSEMBLY 
9. U/D one-way clutch (F2) DISASSEMBLY 
10. Torque converter clutch TORQUE CONVERTER CLUTCH AND DRIVE PLATE 
Slip or shudder (Particular position: Just after engine starts) Torque converter clutch TORQUE CONVERTER CLUTCH AND DRIVE PLATE 
Slip or shudder (R position) 1. Reverse clutch (C2) DISASSEMBLY 
2. 1st and reverse brake (B2) DISASSEMBLY 
Slip or shudder (1st) 1. Forward clutch (C1) DISASSEMBLY 
2. One-way clutch No.1 (F1) DISASSEMBLY 
3. U/D one-way clutch (F2) DISASSEMBLY 
Slip or shudder (2nd) 2nd and O/D brake (B1) DISASSEMBLY 
Slip or shudder (3rd) Direct and O/D clutch (C0) DISASSEMBLY 
Slip or shudder (4th) 2nd and O/D brake (B1) DISASSEMBLY 
Slip or shudder (5th) U/D clutch (C3) DISASSEMBLY 
Shift position too high or too low Shift solenoid valve (SLT) DTC P2716 PRESSURE CONTROL SOLENOID "D" ELECTRICAL (SHIFT SOLENOID VALVE SLT) 
No engine braking (1st +- 4th: D position) U/D brake (B3) DISASSEMBLY 
No engine braking (1st: L (1) position) 1. Valve body assembly REMOVAL 
2. 1st and reverse brake (B2) DISASSEMBLY 
No engine braking (2nd: 2 position) 1. Valve body assembly REMOVAL 
2. 2nd and O/D brake (B1) DISASSEMBLY 
No engine braking (3rd: 3 position) U/D brake (B3) DISASSEMBLY 
No kick-down Valve body assembly REMOVAL 
Poor acceleration (All positions) 1. Shift solenoid valve (SLT) DTC P2716 PRESSURE CONTROL SOLENOID "D" ELECTRICAL (SHIFT SOLENOID VALVE SLT) 
2. Torque converter clutch TORQUE CONVERTER CLUTCH AND DRIVE PLATE 
Poor acceleration (5th) 1. U/D clutch (C3) DISASSEMBLY 
2. U/D planetary gear unit DISASSEMBLY 
Engine stalls when starting off or stopping 1. Shift solenoid valve DSL) DTC P0741 TORQUE CONVERTER CLUTCH SOLENOID PERFORMANCE (SHIFT SOLENOID VALVE DSL) 
2. Torque converter clutch TORQUE CONVERTER CLUTCH AND DRIVE PLATE