Problem Symptoms Table

HINT:

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

CHAPTER 1: ELECTRICAL CIRCUIT MATRIX CHART

ELECTRICAL CIRCUIT MATRIX PROBLEM SYMPTOM

Symptom	Suspected area
No up-shift (a particular gear, from 1st to 3rd gear, is not up-shifted)	ECM (ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
No up-shift (3rd -> O/D)	1. O/D MAIN SWITCH CIRCUIT
No up-shift (3rd -> O/D)	2. ECM (ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
No down-shift (O/D -> 3rd)	1. O/D MAIN SWITCH CIRCUIT
No down-shift (O/D -> 3rd)	2. ECM (ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
No down-shift (a particular gear, from 3rd to 1st gear, is not down-shifted)	ECM (ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
No lock-up or no lock-up off	1. STOP LIGHT SWITCH CIRCUIT
	2. Engine coolant temperature sensor circuit (DIAGNOSTIC TROUBLE CODE CHART )
	3. Throttle position sensor circuit (DIAGNOSTIC TROUBLE CODE CHART )
	4. ECM (ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
Shift point too high or too low	ECM (ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
Up-shift to 2nd while shift lever on L	ECM (ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
Up-shift to 3rd while shift lever on 2	ECM (ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
Up-shift to O/D from 3rd while O/D main switch is OFF	1. O/D MAIN SWITCH CIRCUIT
Up-shift to O/D from 3rd while O/D main switch is OFF	2. ECM (ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
Up-shift to O/D from 3rd while engine is cold	ECM (ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
Harsh engagement (N -> D)	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 )
Engine stalls when starting off or stopping	ECM (ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
No kick-down	ECM (ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
Malfunction in shifting	1. PARK/NEUTRAL POSITION SWITCH CIRCUIT
Malfunction in shifting	2. ECM (ELECTRONIC CIRCUIT INSPECTION PROCEDURE )

CHAPTER 2: ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR

ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR PROBLEM SYMPTOM

Symptom	Suspected area
Vehicle does not move in any forward position and reverse position	1. MANUAL VALVE
	2. VALVE BODY ASSEMBLY (PRIMARY REGULATOR VALVE)
	3. VALVE BODY ASSEMBLY (SECONDARY REGULATOR VALVE)
	4. Off-vehicle repair matrix chart
Vehicle does not move with shift lever on R	1. MANUAL VALVE
Vehicle does not move with shift lever on R	2. Off-vehicle repair matrix chart
No up-shift (1st -> 2nd)	1. VALVE BODY ASSEMBLY (1-2 SHIFT VALVE)
No up-shift (1st -> 2nd)	2. Off-vehicle repair matrix chart
No up-shift (2nd -> 3rd)	1. VALVE BODY ASSEMBLY (2-3 SHIFT VALVE)
No up-shift (2nd -> 3rd)	2. Off-vehicle repair matrix chart
No up-shift (3rd -> O/D)	1. VALVE BODY ASSEMBLY (3-4 SHIFT VALVE)
No up-shift (3rd -> O/D)	2. Off-vehicle repair matrix chart
No down-shift (O/D -> 3rd)	VALVE BODY ASSEMBLY (3-4 SHIFT VALVE)
No down-shift (3rd -> 2nd)	VALVE BODY ASSEMBLY (2-3 SHIFT VALVE)
No down-shift (2nd -> 1st)	VALVE BODY ASSEMBLY (1-2 SHIFT VALVE)
No lock-up or no lock-up off	1. VALVE BODY ASSEMBLY (LOCK-UP RELAY VALVE)
	2. VALVE BODY ASSEMBLY (LOCK-UP CONTROL VALVE)
	3. VALVE BODY ASSEMBLY (SOLENOID RELAY VALVE)
	4. VALVE BODY ASSEMBLY (SOLENOID MODULATOR VALVE)
	5. Off-vehicle repair matrix chart
Harsh engagement (N -> D)	1. VALVE BODY ASSEMBLY (C1 ACCUMULATOR)
	2. VALVE BODY ASSEMBLY (ACCUMULATOR CONTROL VALVE)
	3. Off-vehicle repair matrix chart
Harsh engagement (N -> R)	1. C3 ACCUMULATOR
	2. VALVE BODY ASSEMBLY (ACCUMULATOR CONTROL VALVE)
	3. VALVE BODY ASSEMBLY (REVERSE CONTROL VALVE)
	4. Off-vehicle repair matrix chart
Harsh engagement (lock-up)	1. VALVE BODY ASSEMBLY (LOCK-UP RELAY VALVE)
	2. VALVE BODY ASSEMBLY (ACCUMULATOR CONTROL VALVE)
	3. VALVE BODY ASSEMBLY (LOCK-UP CONTROL VALVE)
	4. Off-vehicle repair matrix chart
Harsh engagement (1st -> 2nd)	1. B2 ACCUMULATOR
Harsh engagement (1st -> 2nd)	2. VALVE BODY ASSEMBLY (ACCUMULATOR CONTROL VALVE)
Harsh engagement (2nd -> 3rd)	1. C2 ACCUMULATOR
Harsh engagement (2nd -> 3rd)	2. VALVE BODY ASSEMBLY (ACCUMULATOR CONTROL VALVE)
Harsh engagement (3rd -> O/D)	1. VALVE BODY ASSEMBLY (B1 ACCUMULATOR)
	2. VALVE BODY ASSEMBLY (ACCUMULATOR CONTROL VALVE)
	3. VALVE BODY ASSEMBLY (3-4 SHIFT TIMING VALVE)
Harsh engagement (O/D -> 3)	1. VALVE BODY ASSEMBLY (3-4 SHIFT TIMING VALVE)
Harsh engagement (O/D -> 3)	2. VALVE BODY ASSEMBLY (4-3 SHIFT TIMING VALVE)
Harsh engagement (shift lever on D, 2, L)	Valve body assembly (coast relay valve)
Slip or shudder (forward and reverse)	1. VALVE BODY ASSEMBLY (OIL STRAINER)
Slip or shudder (forward and reverse)	2. Off-vehicle repair matrix chart
No engine braking (1st/shift lever on L)	1. VALVE BODY ASSEMBLY (REVERSE CONTROL VALVE)
No engine braking (1st/shift lever on L)	2. Off-vehicle repair matrix chart
No engine braking (2nd/shift lever on 2)	VALVE BODY ASSEMBLY (3-4 SHIFT VALVE)
No kick-down	1. VALVE BODY ASSEMBLY (1-2 SHIFT VALVE)
	2. VALVE BODY ASSEMBLY (2-3 SHIFT VALVE)
	3. VALVE BODY ASSEMBLY (3-4 SHIFT VALVE)
Poor acceleration	VALVE BODY ASSEMBLY (SLT DAMPER)

CHAPTER 3: OFF-VEHICLE REPAIR

OFF-VEHICLE REPAIR PROBLEM SYMPTOM

Symptom	Suspected area
Vehicle does not move in any forward position and reverse position	1. PLANETARY GEAR UNIT
	2. FORWARD CLUTCH
	3. NO. 2 ONE-WAY CLUTCH
	4. REVERSE CLUTCH
	5. 1ST AND REVERSE BRAKE
Vehicle does not move with shift lever on R	1. PLANETARY GEAR UNIT
	2. REVERSE CLUTCH
	3. 1ST AND REVERSE BRAKE
No up-shift (1st -> 2nd)	1. 2ND BRAKE
No up-shift (1st -> 2nd)	2. NO. 1 ONE-WAY CLUTCH
No up-shift (2nd -> 3rd)	DIRECT CLUTCH
No up-shift (3rd -> O/D)	O/D AND 2ND BRAKE
No lock-up or no lock-up off	TORQUE CONVERTER CLUTCH
Harsh engagement (N -> D)	1. FORWARD CLUTCH
Harsh engagement (N -> D)	2. NO. 2 ONE-WAY CLUTCH
Harsh engagement (N -> R)	1. REVERSE CLUTCH
Harsh engagement (N -> R)	2. 1ST AND REVERSE BRAKE
Harsh engagement (lock-up)	TORQUE CONVERTER CLUTCH
Harsh engagement (1st -> 2nd)	1. 2ND BRAKE
Harsh engagement (1st -> 2nd)	2. NO. 1 ONE-WAY CLUTCH
Harsh engagement (2nd -> 3rd)	DIRECT CLUTCH
Harsh engagement (3rd -> O/D)	O/D AND 2ND BRAKE
Slip or shudder (forward position)	1. TORQUE CONVERTER CLUTCH
	2. FORWARD CLUTCH
	3. DIRECT CLUTCH
	4. O/D AND 2ND BRAKE
	5. 2ND BRAKE
	6. NO. 1 ONE-WAY CLUTCH
	7. NO. 2 ONE-WAY CLUTCH
Slip or shudder (reverse position)	1. REVERSE CLUTCH
Slip or shudder (reverse position)	2. 1ST AND REVERSE BRAKE
Slip or shudder (1st)	NO. 2 ONE-WAY CLUTCH
Slip or shudder (2nd)	1. 2ND BRAKE
Slip or shudder (2nd)	2. NO. 1 ONE-WAY CLUTCH
Slip or shudder (3rd)	DIRECT CLUTCH
Slip or shudder (O/D)	O/D AND 2ND BRAKE
No engine braking (1st/shift lever on L)	1ST AND REVERSE BRAKE
No engine braking (2nd/shift lever on 2)	O/D AND 2ND BRAKE
Poor acceleration (all positions)	TORQUE CONVERTER CLUTCH
Large shift shock or engine stalls when starting off or stopping	TORQUE CONVERTER CLUTCH