AUTOMATIC TRANSMISSION SYSTEM PROBLEM SYMPTOMS TABLE

Tech Tips

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 on 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
Symptom	Suspected Area	See page
No up-shift (a particular gear from 1st to 4th gear is not up-shifted)	1. Shift solenoid valve S1 circuit*	Click here
	2. Shift solenoid valve S2 circuit*	Click here
	3. ECM	Click here
No up-shift (4th -> 5th)	1. Transmission control switch circuit (D - 4)*	Click here
	2. Engine coolant temperature sensor circuit*	Click here
	3. Speed sensor NT circuit*	Click here
	4. Shift solenoid valve SL1 circuit*	Click here
	5. Shift solenoid valve SL2 circuit*	Click here
	6. Shift solenoid valve SR circuit*	Click here
	7. ECM	Click here
No up-shift (3rd -> 4th)	1. Engine coolant temperature sensor circuit*	Click here
	2. Shift solenoid valve S2 circuit*	Click here
	3. ECM	Click here
No up-shift (1st -> 2nd)	1. Transmission control switch circuit (2 - L)*	Click here
	2. Shift solenoid valve S2 circuit*	Click here
	3. ECM	Click here
No down-shift (5th -> 4th)	1. Transmission control switch circuit (D - 4)*	Click here
	2. Shift solenoid valve SL1 circuit*	Click here
	3. Shift solenoid valve SL2 circuit*	Click here
	4. Shift solenoid valve SR circuit*	Click here
	5. ECM	Click here
No down-shift (2nd -> 1st)	1. Transmission control switch circuit (2 - L)*	Click here
	2. Shift solenoid valve S2 circuit*	Click here
	3. ECM	Click here
No down-shift (a particular gear from 1st to 4th gear is not down-shifted)	1. Shift solenoid valve S1 circuit*	Click here
	2. Shift solenoid valve S2 circuit*	Click here
	3. ECM	Click here
No lock-up	1. ATF temperature sensor circuit*	Click here
	2. Transfer L4 position switch circuit*	Click here
	3. Stop light switch circuit*	Click here
	4. Speed sensor NT circuit*	Click here
	5. Shift solenoid valve SLU circuit*	Click here
	6. Engine coolant temperature sensor circuit*	Click here
	7. ECM	Click here
No lock-up off	1. Shift solenoid valve SLU circuit*	Click here
No lock-up off	2. ECM	Click here
Shift point too high or too low	1. Shift solenoid valve SLT circuit*	Click here
	2. Speed sensor NT circuit*	Click here
	3. Speed sensor SP2 circuit*	Click here
	4. Throttle position sensor circuit*	Click here
	5. ATF temperature sensor circuit*	Click here
	6. Transfer L4 position switch circuit*	Click here
	7. ECM	Click here
Up-shift to 5th from 4th while shift lever on 4	1. Transmission control switch circuit (D - 4)*	Click here
Up-shift to 5th from 4th while shift lever on 4	2. ECM	Click here
Up-shift to 5th from 4th while engine is cold	1. Engine coolant temperature sensor circuit*	Click here
Up-shift to 5th from 4th while engine is cold	2. ECM	Click here
Up-shift to 4th from 3rd while shift lever on 3	1. Park/Neutral position switch circuit*	Click here
Up-shift to 4th from 3rd while shift lever on 3	2. ECM	Click here
Up-shift to 3rd from 2nd while shift lever on 2	1. Park/Neutral position switch circuit*	Click here
Up-shift to 3rd from 2nd while shift lever on 2	2. ECM	Click here
Up-shift to 2nd from 1st while shift lever on L	1. Transmission control switch circuit (2 - L)*	Click here
Up-shift to 2nd from 1st while shift lever on L	2. ECM	Click here
Harsh engagement (N -> D)	1. Speed sensor NT circuit*	Click here
	2. Shift solenoid valve SL1 circuit*	Click here
	3. Shift solenoid valve SLT circuit*	Click here
	4. ECM	Click here
Harsh engagement (Lock-up)	1. Speed sensor NT circuit*	Click here
	2. Speed sensor SP2 circuit*	Click here
	3. Shift solenoid valve SLU circuit*	Click here
	4. ECM	Click here
Harsh engagement (any driving position)	ECM	Click here
Poor acceleration	1. No. 2 ATF temperature sensor circuit*	Click here
	2. Engine coolant temperature sensor circuit*	Click here
	3. Shift solenoid valve SLT circuit*	Click here
	4. ECM	Click here
No engine braking	ECM	Click here
No kick-down	ECM	Click here
Engine stalls when starting off or stopping	1. Shift solenoid valve SLU circuit*	Click here
Engine stalls when starting off or stopping	2. ECM	Click here
ATF temperature warning light remains on	1. No. 2 ATF temperature sensor circuit*	Click here
	2. Engine coolant temperature sensor circuit*	Click here
	3. ECM	Click here
Lock-up at 3rd gear	1. No. 2 ATF temperature sensor circuit*	Click here
	2. Engine coolant temperature sensor circuit*	Click here
	3. ECM	Click here
Shift point too high	1. No. 2 ATF temperature sensor circuit*	Click here
	2. Engine coolant temperature sensor circuit*	Click here
	3. ECM	Click here
A/T P indicator light does not illuminate	1. A/T P indicator light circuit	Click here
A/T P indicator light does not illuminate	2. Combination meter circuit	Click here
Malfunction in shifting	1. Park/Neutral position switch circuit*	Click here
Malfunction in shifting	2. ECM	Click here

Tech Tips

*: When the circuit is defective, a DTC may be output.

CHAPTER 2: ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR
Symptom	Suspected Area	See page
Vehicle does not move in all positions other than P and N	1. Transmission control cable	Click here
	2. Manual valve	Click here
	3. Parking lock pawl	Click here
	4. Off-vehicle repair matrix chart	-
Vehicle does not move with shift lever on R	1. Valve body assembly	Click here
Vehicle does not move with shift lever on R	2. Off-vehicle repair matrix chart	-
No up-shift (1st -> 2nd)	1. Valve body assembly	Click here
No up-shift (1st -> 2nd)	2. Off-vehicle repair matrix chart	-
No up-shift (2nd -> 3rd)	1. Valve body assembly	Click here
No up-shift (2nd -> 3rd)	2. Off-vehicle repair matrix chart	-
No up-shift (3rd -> 4th)	1. Valve body assembly	Click here
No up-shift (3rd -> 4th)	2. Off-vehicle repair matrix chart	-
No up-shift (4th -> 5th)	1. Valve body assembly	Click here
No up-shift (4th -> 5th)	2. Off-vehicle repair matrix chart	-
No down-shift (5th -> 4th)	1. Valve body assembly	Click here
No down-shift (5th -> 4th)	2. Off-vehicle repair matrix chart	-
No down-shift (4th -> 3rd)	1. Valve body assembly	Click here
No down-shift (4th -> 3rd)	2. Off-vehicle repair matrix chart	-
No down-shift (3rd -> 2nd)	1. Valve body assembly	Click here
No down-shift (3rd -> 2nd)	2. Off-vehicle repair matrix chart	-
No down-shift (2nd -> 1st)	1. Valve body assembly	Click here
No down-shift (2nd -> 1st)	2. Off-vehicle repair matrix chart	-
No lock-up or no lock-up off	1. Shift solenoid valve SLU	Click here
	2. Valve body assembly	Click here
	3. Off-vehicle repair matrix chart	-
Harsh engagement (N -> D)	1. Shift solenoid valve SL1	Click here
	2. Valve body assembly	Click here
	3. C1 accumulator	Click here
	4. Off-vehicle repair matrix chart	-
Harsh engagement (Lock-up)	1. Shift solenoid valve SLU	Click here
	2. Valve body assembly	Click here
	3. Off-vehicle repair matrix chart	-
Harsh engagement (N -> R)	1. Shift solenoid valve SLT	Click here
	2. Shift solenoid valve SLU	Click here
	3. Valve body assembly	Click here
	4. C3 accumulator	Click here
	5. Off-vehicle repair matrix chart	-
Harsh engagement (1st -> 2nd -> 3rd -> 4th -> 5th)	1. Shift solenoid valve SLT	Click here
	2. Shift solenoid valve SL1	Click here
	3. Valve body assembly	Click here
Harsh engagement (1st -> 2nd)	1. Valve body assembly	Click here
	2. B3 accumulator	Click here
	3. Off-vehicle repair matrix chart	-
Harsh engagement (2nd -> 3rd)	1. Valve body assembly	Click here
	2. C3 accumulator	Click here
	3. Off-vehicle repair matrix chart	-
Harsh engagement (3rd -> 4th)	1. Valve body assembly	Click here
	2. C2 accumulator	Click here
	3. Off-vehicle repair matrix chart	-
Harsh engagement (4th -> 5th)	1. Shift solenoid valve SL1	Click here
	2. Shift solenoid valve SL2	Click here
	3. Valve body assembly	Click here
	4. Off-vehicle repair matrix chart	-
Harsh engagement (5th -> 4th)	1. Shift solenoid valve SL1	Click here
	2. Shift solenoid valve SL2	Click here
	3. Valve body assembly	Click here
	4. Off-vehicle repair matrix chart	-
Slip or shudder (forward and reverse)	1. Transmission control cable	Click here
	2. Valve body assembly	Click here
	3. Oil strainer	Click here
	4. Off-vehicle repair matrix chart	-
No engine braking (1st/shift lever on L)	1. Valve body assembly	Click here
No engine braking (1st/shift lever on L)	2. Off-vehicle repair matrix chart	-
No engine braking (2nd/shift lever on 2)	1. Valve body assembly	Click here
No engine braking (2nd/shift lever on 2)	2. Off-vehicle repair matrix chart	-
No kick-down	Valve body assembly	Click here
Shift point too high or too low	1. Shift solenoid valve SLT	Click here
	2. Shift solenoid valve SL1	Click here
	3. Valve body assembly	Click here
Poor acceleration	1. Shift solenoid valve SLT	Click here
Poor acceleration	2. Valve body assembly	Click here
Engine stalls when starting off or stopping	1. Shift solenoid valve SLU	Click here
Engine stalls when starting off or stopping	2. Valve body assembly	Click here

CHAPTER 3: OFF-VEHICLE REPAIR
Symptom	Suspected Area	See page
Vehicle does not move in all positions other than P and N	1. Rear planetary gear unit	Click here
Vehicle does not move in all positions other than P and N	2. Torque converter clutch	Click here
Vehicle does not move with shift lever on R	1. B4 brake	Click here
	2. C3 clutch	Click here
	3. F1 one-way clutch	Click here
No up-shift (1st -> 2nd)	1. B3 brake	Click here
	2. F1 one-way clutch	Click here
	3. F2 one-way clutch	Click here
No up-shift (2nd -> 3rd)	C3 clutch	Click here
No up-shift (3rd -> 4th)	C2 clutch	Click here
No up-shift (4th -> 5th)	1. B1 brake	Click here
No up-shift (4th -> 5th)	2. C1 clutch	Click here
No lock-up or no lock-up off	Torque converter clutch	Click here
Harsh engagement (N -> D)	1. C1 clutch	Click here
Harsh engagement (N -> D)	2. F3 one-way clutch	Click here
Harsh engagement (N -> R)	1. C3 clutch	Click here
	2. B4 brake	Click here
	3. F1 one-way clutch	Click here
Harsh engagement (1st -> 2nd)	1. B3 brake	Click here
	2. F1 one-way clutch	Click here
	3. F2 one-way clutch	Click here
Harsh engagement (2nd -> 3rd)	C3 clutch	Click here
Harsh engagement (3rd -> 4th)	C2 clutch	Click here
Harsh engagement (4th -> 5th)	1. B1 brake	Click here
Harsh engagement (4th -> 5th)	2. C1 clutch	Click here
Harsh engagement (lock-up)	Torque converter clutch	Click here
Slip or shudder (forward and reverse: after warm-up)	1. F1 one-way clutch	Click here
	2. C3 clutch	Click here
	3. Torque converter clutch	Click here
Slip or shudder (particular position: just after engine starts)	Torque converter clutch	Click here
Slip or shudder (shift lever on R)	1. B4 brake	Click here
	2. F1 one-way clutch	Click here
	3. C3 clutch	Click here
Slip or shudder (1st)	1. C1 clutch	Click here
Slip or shudder (1st)	2. F3 one-way clutch	Click here
Slip or shudder (2nd)	1. C1 clutch	Click here
	2. B3 brake	Click here
	3. F1 one-way clutch	Click here
	4. F2 one-way clutch	Click here
Slip or shudder (3rd)	1. C1clutch	Click here
	2. C3 clutch	Click here
	3. F1 one-way clutch	Click here
Slip or shudder (4th)	1. C1 clutch	Click here
Slip or shudder (4th)	2. C2 clutch	Click here
Slip or shudder (5th)	1. C2 clutch	Click here
	2. C3 clutch	Click here
	3. B1 brake	Click here
No engine braking (1st to 4th and 4th to 1st/shift lever on D)	C1 clutch	Click here
No engine braking (1st/shift lever on L)	B4 brake	Click here
No engine braking (2nd/shift lever on 2)	B2 brake	Click here
No engine braking (3rd/shift lever on 3)	B1 brake	Click here
No engine braking (all shift lever positions)	Torque converter clutch	Click here
Poor acceleration (5th)	1. C1 clutch	Click here
	2. C3 clutch	Click here
	3. B1 brake	Click here
	4. Front planetary gear unit	Click here
Engine stalls when starting off or stopping	Torque converter clutch	Click here