Chapter Electronic Circuit Matrix Chart

Symptom

Suspected area

See page

No down-shift (A particular gear, from 1st to 4th gear, is not down-shifted)

ECM

IN-31

No down-shift (5th -> 4th)

1. Park/neutral position switch circuit *1

AX-36

2. Shift solenoid valve (S4) circuit *1

AX-102

3. ECM

IN-31

No up-shift (A particular gear, from 1st to 4th gear, is not up-shifted)

ECM

IN-31

No up-shift (4th -> 5th)

1. Park/neutral position switch circuit *1

AX-36

2. Shift solenoid valve (S4) circuit *1

AX-102

3. ECM

IN-31

No lock-up

1. Stop light switch circuit *1

AX-56

2. Engine coolant temp. sensor circuit *1

ES-60

3. ECM

IN-31

No lock-up off

ECM

IN-31

Shift point too high or too low

1. Throttle position sensor circuit *1

ES-60

2. ECM

IN-31

Up-shift to 5th from 4th while engine is cold

1. Engine coolant temp. sensor circuit *1

ES-60

2. ECM

IN-31

No gear change by shifting into "+" or "-" while the shifting lever is in the S position

1. Transmission control switch circuit

AX-115

2. ECM

IN-31

Harsh engagement (N -> D)

1. Shift solenoid valve (SL1) circuit *1

AX-69

2. ECM

IN-31

Harsh engagement (Lock-up)

ECM

IN-31

Harsh engagement (Any driving position)

ECM

IN-31

Poor acceleration

ECM

IN-31

No kick-down

ECM

IN-31

Engine stalls when starting off or stopping

ECM

IN-31

Malfunction in shifting

1. Park/neutral position switch circuit *1

AX-36

2. Transmission control switch circuit

AX-115

3. ECM

IN-31

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

Symptom

Suspected area

See page

Vehicle does not move in any forward position and in reverse positions

1. Valve body assembly

AX-136

2. U/D brake (B3)

AX-182

3. Torque converter clutch

AX-175

Vehicle does not move in R position

1. Valve body assembly

AX-136

2. Reverse clutch (C2)

AX-182

3. 1st and reverse brake (B2)

AX-182

No up-shift (1st -> 2nd)

1. Valve body assembly

AX-136

2. 2nd and O/D brake (B1)

AX-182

No up-shift (2nd -> 3rd)

1. Valve body assembly

AX-136

2. Direct and O/D clutch (C0)

AX-182

No up-shift (3rd -> 4th)

1. Valve body assembly

AX-136

2. 2nd and O/D brake (B1)

AX-182

No up-shift (4th -> 5th)

1. Shift solenoid valve (S4)

AX-73

2. Valve body assembly

AX-136

3. U/D clutch (C3)

AX-182

No down-shift (5th -> 4th)

1. Shift solenoid (S4)

AX-73

2. Valve body assembly

AX-136

No down-shift (4th -> 3rd)

Valve body assembly

AX-136

No down-shift (3rd -> 2nd)

Valve body assembly

AX-136

No down-shift (2nd -> 1st)

Valve body assembly

AX-136

No lock-up or No lock-up off

1. Shift solenoid valve (DSL)

AX-59

2. Valve body assembly

AX-136

3. Torque converter clutch

AX-175

Harsh engagement (N -> D)

1. Shift solenoid valve (SL1)

AX-65

2. Valve body assembly

AX-136

3. C1 accumulator

AX-182

4. Forward clutch (C1)

AX-182

5. One-way clutch No.1 (F1)

AX-182

6. U/D one-way clutch (F2)

AX-182

Harsh engagement (Lock-up)

1 .Shift solenoid valve (SL2)

AX-81

2. Valve body assembly

AX-136

3. Torque converter clutch

AX-175

Harsh engagement (N -> R)

1. Valve body assembly

AX-136

2. C2 accumulator

AX-182

3. Reverse clutch (C2)

AX-182

4. 1st and reverse brake (B2)

AX-182

Harsh engagement (1st -> 2nd -> 3rd -> 4th -> 5th)

1. Shift solenoid valve (SLT)

AX-108

2. Valve body assembly

AX-136

Harsh engagement (1st -> 2nd)

1. Valve body assembly

AX-136

2. 2nd and O/D brake (B1)

AX-182

Harsh engagement (2nd -> 3rd)

1. Valve body assembly

AX-136

2. C0 accumulator

AX-182

3. Direct and O/D clutch (C0)

AX-182

Harsh engagement (3rd -> 4th)

1. Valve body assembly

AX-136

2. 2nd and O/D brake (B1)

AX-182

Harsh engagement (4th -> 5th)

1. Valve body assembly

AX-136

2. C3 accumulator

AX-182

3. U/D clutch (B3)

AX-182

Symptom

Suspected area

See page

Harsh engagement (5th -> 4th)

1. Valve body assembly

AX-136

2. B3 accumulator

AX-182

1. Valve body assembly

AX-136

2. Oil strainer

AX-136

3. Direct and O/D clutch (C0)

AX-182

4. Forward clutch (C1)

AX-182

Slip or shudder (Forward and reverse: After warm-up)

5. U/D clutch (C3)

AX-182

6. 2nd and brake (B1)

AX-182

7. U/D brake (B3)

AX-182

8. One-way clutch No.1 (F1)

AX-182

9. U/D one-way clutch (F2)

AX-182

10. Torque converter clutch

AX-175

Slip or shudder (Particular position: Just after engine starts)

Torque converter clutch

AX-175

Slip or shudder (R position)

1. Reverse clutch (C2)

AX-182

2. 1st and reverse brake (B2)

AX-182

1. Forward clutch (C1)

AX-182

Slip or shudder (1st)

2. One-way clutch No.1 (F1)

AX-182

3. U/D one-way clutch (F2)

AX-182

Slip or shudder (2nd)

2nd and O/D brake (B1)

AX-182

Slip or shudder (3rd)

Direct and O/D clutch (C0)

AX-182

Slip or shudder (4th)

2nd and O/D brake (B1)

AX-182

Slip or shudder (5th)

U/D clutch (C3)

AX-182

Shift position too high or too low

Shift solenoid valve (SLT)

AX-108

No engine braking (1st +- 4th: D position)

U/D brake (B3)

AX-182

No engine braking (1st: L (1) position)

1. Valve body assembly

AX-136

2. 1st and reverse brake (B2)

AX-182

No engine braking (2nd: 2 position)

1. Valve body assembly

AX-136

2. 2nd and O/D brake (B1)

AX-182

No engine braking (3rd: 3 position)

U/D brake (B3)

AX-182

No kick-down

Valve body assembly

AX-136

Poor acceleration (All positions)

1. Shift solenoid valve (SLT)

AX-108

2. Torque converter clutch

AX-175

Poor acceleration (5th)

1. U/D clutch (C3)

AX-182

2. U/D planetary gear unit

AX-182

Engine stalls when starting off or stopping

1. Shift solenoid valve DSL)

AX-59

2. Torque converter clutch

AX-175

TERMINALS OF ECM

J-LJ L

r

I

r

n

J-LJ

7 | 6

51413

2 | 1

7

6 | 5 | 4

3 |

2 | 1

7 | 6

51413

211

6 | 5

| 4 | 3 | 2 | 1

H

7|6|5|4|3|2|l

17

16

15

14

13

12

11

10

9

8

19

18

17p6

15

14

13|l2

11

10

9

8

17

16

15

14

13

12

11

10

9

8

16

15

14

13

12

11

10

9

8

7

17

16

15p4

13

12

11

10

9

8

27

26

25

24

23

22

21

20

19

18

27

26

25

24

n

23

22

21

20

27

26

25

24

23

22

21

20

19

18

27

26

25

24

23

22

21

20

19

18

17

25

24

n

23

22

21

20

19

18

34

33

Inl

32

31

30

29

28

35

34

n

33

32

31

30

29

28

32

31

n

30

Inl

29

28

35

34

33

32

31

Inl

30

29

28

31

30

29

28

n

27

HINT:

Each ECM terminal's standard voltage is shown in the table below.

In the table, first follow the information under "Condition".

Look under "Symbols (Terminal No.)" for the terminals to inspected. The standard voltage between the terminals is shown under "Specific Condition".

Use the illustration above as a reference for the ECM

terminals.

Symbols (Terminals No.)

Wiring Color

Terminal Description

Condition

Specified Condition

D (D41-21) - E1 (B47-1)

W - BR

D shift position switch signal

Ignition switch on (IG) and shift lever D and S position

10 to 14 V

t

t

t

Ignition switch on (IG) and shift lever except D and S position

Below 1 V

R (D41-11) - E1 (B47-1)

P - BR

R shift position switch signal

Ignition switch on (IG) and shift lever R position

10 to 14 V

t

t

t

Ignition switch on (IG) and shift lever except R position

Below 1 V

SPD (D41-8) - E1 (B47-1)

GR - BR

Speed signal

Vehicle speed 20 km/h (12mph)

Pulse generation (See waveform 8)

STP (A24-15) - E1 (B47-1)

W - BR

Stop light switch signal

Brake pedal is depressed

7.5 to 14 V

t

t

t

Brake pedal is released

Below 1.5 V

SFTD (D41-5) - E1 (B47-1)

W - BR

Down shift switch signal

Ignition switch on (IG) and shift lever S position

10 to 14 V

t

t

t

Ignition switch on (IG) and shift lever "-" position (Down shift)

Below 1 V

SFTU (D41-6) - E1 (B47-1)

R - BR

Up shift switch signal

Ignition switch on (IG) and shift lever S position

10 to 14 V

t

t

t

Ignition switch on (IG) and shift lever "+" position (Up shift)

Below 1 V

S (D41-20) - E1 (B47-1)

L - BR

S shift position switch signal

Ignition switch on (IG) and shift lever S position

10 to 14 V

t

t

t

Ignition switch on (IG) and shift lever except S position

Below 1 V

P (D41-23) - E1 (B47-1)

G-W - BR

Park position switch signal

Ignition switch on (IG) and shift lever P position

10 to 14 V

t

t

t

Ignition switch on (IG) and shift lever except P position

Below 1 V

Symbols (Terminals No.)

Wiring Color

Terminal Description

Condition

Specified Condition

N (D41-22) - E1 (B47-1)

O - BR

Neutral position switch signal

Ignition switch on (IG) and shift lever N position

10 to 14 V

t

t

t

Ignition switch on (IG) and shift lever except N position

Below 1 V

STAR (B46-8) - E1 (B47-1)

B-W*1 - BR W-R*2 - BR

Park neutral switch signal

Ignition switch on (IG) and shift lever P and N position

Below 1 V

t

t

t

Ignition switch on (IG) and shift lever except P and N position

10 to 14 V

DSL (B46-11) - E1 (B47-1)

G-R - BR

DSL solenoid signal

Vehicle speed 65 km/h (40mph), lock-up (ON to OFF)

Pulse generation (See waveform 2)

SR (B46-9) - E1 (B47-1)

L-B - BR

SR solenoid signal

Ignition switch on (IG)

Below 1 V

t

t

t

3rd, 4th or 5th gear

10 to 14 V

t

t

t

1st or 2nd gear

Below 1 V

S4 (B46-10) - E1 (B47-1)

W-L - BR

S4 solenoid signal

Ignition switch on (IG)

Below 1 V

t

t

t

5th gear

10 to 14 V

t

t

t

Except 5th gear

Below 1 V

SL3+ (B46-17) - SL3- (B46-16)

W - B-W

SL3 solenoid signal

Engine idle speed

Pulse generation (See waveform 3)

SL2+ (B46-15) - SL2- (B46-14)

Y - L

SL2 solenoid signal

Engine idle speed

Pulse generation (See waveform 4)

SL1+ (B46-19) - SL1- (B46-18)

G - P

SL1 solenoid signal

Engine idle speed

Pulse generation (See waveform 5)

NC+ (B46-34) - NC- (B46-26)

L-B - G-R

Speed sensor (NC) signal

Vehicle speed 30 km/h (19mph): (3rd gear)

Engine speed 1,400 rpm

Pulse generation (See waveform 6)

NT+ (B46-35) - NT- (B46-27)

W-L - L

Speed sensor (NT) signal

Vehicle speed 20 km/h (12mph)

Pulse generation (See waveform 7)

SLT+ (B46-13) - SLT- (B46-12)

R - G

SLT solenoid signal

Engine idle speed

Pulse generation (See waveform 1)

THO1 (B46-24) - E2 (B45-28)

W-R - W

ATF temperature sensor signal

ATF temperature: 115°C (239°F) or more

Below 1.5 V

(a) Waveform 1 Reference:

Terminal

SLT+ - SLT-

Tool setting

5 V/DIV, 1ms/DIV

Vehicle condition

Engine idle speed

100 ms/DIV

10 V/DIV

GN D

(b) Waveform 2 Reference:

Terminal

DSL -E1

Tool setting

10 V/DIV, 100ms/DIV

Vehicle condition

Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF)

(c) Waveform 3 Reference:

Terminal

SL3+ - SL3-

Tool setting

5 V/DIV, 1ms/DIV

Vehicle condition

Engine idle speed

5 V/DIV

^GND

G023426E01

(d) Waveform 4 Reference:

Terminal

SL2+ - SL2-

Tool setting

5 V/DIV, 1ms/DIV

Vehicle condition

Engine idle speed

5 V/DIV

(e) Waveform 5 Reference:

Terminal

SL1+ - SL1-

Tool setting

5 V/DIV, 1ms/DIV

Vehicle condition

Engine idle speed

(f) Waveform 6 Reference:

Terminal

NC+ - NC-

Tool setting

1 V/DIV, 1ms/DIV

Vehicle condition

Vehicle speed 30 km/h (19 mph): (3rd gear) Engine speed 1.400 rpm

\ iA A i

A A. A'

0.5 ms/DIV "

5 V/DIV

GN D

(g) Waveform 7 Reference:

Terminal

NT+ - NT-

Tool setting

5 V/DIV, 0.5ms/DIV

Vehicle condition

Vehicle speed 20 km/h (12 mph)

5 V/DIV

C053421E03

(h) Waveform 8 Reference:

Terminal

SPD - E1

Tool setting

5 V/DIV, 20ms/DIV

Vehicle condition

Vehicle speed 20 km/h (12 mph)

HINT:

Depending on the vehicle, the output waveform voltage, influenced by optionally installed systems, may become 5V.

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