Chapter Electrical Circuit Matrix Chart

PROBLEM SYMPTO

>MS TABLE

Symptom

Suspected area

See

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

1. Shift solenoid valve (S1) circuit *1

DTC P0973 SHIFT SOLENOID "A" CONTROL CIRCUIT

LOW (SHIFT SOLENOID VALVE S1); DTC P0974 SHIFT

SOLENOID "A" CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE S1)

2. Shift solenoid valve (S2) circuit *1

DTC P0976 SHIFT SOLENOID "B" CONTROL CIRCUIT

LOW (SHIFT SOLENOID VALVE S2); DTC P0977 SHIFT

SOLENOID "B" CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE S2)

3. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

No up-shift (4th to 5th)

1. O/D main switch circuit

O/D MAIN SWITCH CIRCUIT

2. Engine coolant temperature sensor circuit *1

DIAGNOSTIC TROUBLE CODE CHART

3. Speed sensor NT circuit *1

DTC P0717 INPUT SPEED SENSOR CIRCUIT NO

SIGNAL

4. Shift solenoid valve (SL1) circuit *1

DTC P0748 PRESSURE CONTROL SOLENOID "A" ELECTRICAL (SHIFT SOLENOID VALVE SL1)

5. Shift solenoid valve (SL2) circuit *1

DTC P0778 PRESSURE CONTROL SOLENOID "B" ELECTRICAL (SHIFT SOLENOID VALVE SL2)

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

6. Shift solenoid valve (SR) circuit *1

DTC P0985 SHIFT SOLENOID "E" CONTROL CIRCUIT

LOW (SHIFT SOLENOID VALVE SR); DTC P0986 SHIFT SOLENOID "E" CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE SR)

7. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

No up-shift (3rd to 4th)

1. Engine coolant temperature sensor circuit *1

DIAGNOSTIC TROUBLE CODE CHART

2. Shift solenoid valve (S2) circuit *1

DTC P0976 SHIFT SOLENOID "B" CONTROL CIRCUIT

LOW (SHIFT SOLENOID VALVE S2); DTC P0977 SHIFT

SOLENOID "B" CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE S2)

3. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

No up-shift (1st to 2nd)

1. Shift position L switch circuit

SHIFT POSITION L SWITCH CIRCUIT

2. Shift solenoid valve (S2) circuit *1

DTC P0976 SHIFT SOLENOID "B" CONTROL CIRCUIT

LOW (SHIFT SOLENOID VALVE S2); DTC P0977 SHIFT

SOLENOID "B" CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE S2)

3. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

No down-shift (5th to 4th)

1. O/D main switch circuit

O/D MAIN SWITCH CIRCUIT

2. Shift solenoid valve (SL1) circuit *1

DTC P0748 PRESSURE CONTROL SOLENOID "A" ELECTRICAL (SHIFT SOLENOID VALVE SL1)

3. Shift solenoid valve (SL2) circuit *1

DTC P0778 PRESSURE CONTROL SOLENOID "B" ELECTRICAL (SHIFT SOLENOID VALVE SL2)

4. Shift solenoid valve (SR) circuit *1

DTC P0985 SHIFT SOLENOID "E" CONTROL CIRCUIT

LOW (SHIFT SOLENOID VALVE SR); DTC P0986 SHIFT SOLENOID "E" CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE SR)

5. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

No down-shift (2nd to 1st)

1. Shift position L switch circuit

SHIFT POSITION L SWITCH CIRCUIT

2. Shift solenoid valve (S2) circuit *1

DTC P0976 SHIFT SOLENOID "B" CONTROL CIRCUIT

LOW (SHIFT SOLENOID VALVE S2); DTC P0977 SHIFT

SOLENOID "B" CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE S2)

3. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

No down-shift (A particular gear, from

1. Shift solenoid valve (S1) circuit *1

DTC P0973 SHIFT SOLENOID "A" CONTROL CIRCUIT

LOW (SHIFT SOLENOID VALVE S1); DTC P0974 SHIFT

SOLENOID "A" CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE S1)

DTC P0976 SHIFT SOLENOID "B" CONTROL CIRCUIT

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

1st to 4th gear, is not down-shifted)

2. Shift solenoid valve (S2) circuit *1

LOW (SHIFT SOLENOID VALVE S2); DTC P0977 SHIFT

SOLENOID "B" CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE S2)

3. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

No lock-up

1. ATF temperature sensor circuit *1

DTC P0710 TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT; DTC P0712 TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT LOW

INPUT; DTC P0713 TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT HIGH INPUT

2. Stop light switch circuit *1

DTC P0722 OUTPUT SPEED SENSOR CIRCUIT NO

SIGNAL

3. Speed sensor NT circuit *1

DTC P0717 INPUT SPEED SENSOR CIRCUIT NO

SIGNAL

4. Shift solenoid valve (SLU) circuit *1

DTC P2759 TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT ELECTRICAL (SHIFT SOLENOID VALVE

SLU)

5. Engine coolant temperature sensor circuit *1

DIAGNOSTIC TROUBLE CODE CHART

6. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

No lock-up off

1. Shift solenoid valve (SLU) circuit *1

DTC P2759 TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT ELECTRICAL (SHIFT SOLENOID VALVE

SLU)

2. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

Shift point too high or too low

1. Shift solenoid valve (SLT) circuit *1

DTC P2716 PRESSURE CONTROL SOLENOID "D" ELECTRICAL (SHIFT SOLENOID VALVE SLT)

2. Speed sensor NT circuit *1

DTC P0717 INPUT SPEED SENSOR CIRCUIT NO

SIGNAL

3. Speed sensor SP2 circuit *1

DTC P0717 INPUT SPEED SENSOR CIRCUIT NO

SIGNAL

4. Throttle position sensor circuit *1

DIAGNOSTIC TROUBLE CODE CHART

5. ATF temperature sensor circuit *1

DTC P0710 TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT; DTC P0712 TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT LOW

INPUT; DTC P0713 TRANSMISSION FLUID TEMPERATURE SENSOR "A" CIRCUIT HIGH INPUT

6. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

Up-shift to 5th from 4th while shift lever is in 4 position

1. O/D main switch circuit

O/D MAIN SWITCH CIRCUIT

2. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

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

1. Engine coolant temperature sensor circuit *1

DIAGNOSTIC TROUBLE CODE CHART

2. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

Up-shift to 4th from 3rd while shift lever is in 3 position

1. Park/neutral position switch circuit *1

PARK / NEUTRAL POSITION SWITCH

2. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

Up-shift to 3rd from 2nd while shift lever is in 2 position

1. Park/neutral position switch circuit *1

PARK / NEUTRAL POSITION SWITCH

2. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

Up-shift to 2nd from 1st while shift lever is in L position

1. Shift position L switch circuit

SHIFT POSITION L SWITCH CIRCUIT

2. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

Harsh engagement (N to D)

1. Speed sensor NT circuit *1

DTC P0717 INPUT SPEED SENSOR CIRCUIT NO

SIGNAL

2. Shift solenoid valve (SL1) circuit *1

DTC P0748 PRESSURE CONTROL SOLENOID "A" ELECTRICAL (SHIFT SOLENOID VALVE SL1)

3. Shift solenoid valve (SLT) circuit *1

DTC P2716 PRESSURE CONTROL SOLENOID "D" ELECTRICAL (SHIFT SOLENOID VALVE SLT)

4. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

Harsh engagement (Lock-up)

1. Speed sensor NT circuit *1

DTC P0717 INPUT SPEED SENSOR CIRCUIT NO

SIGNAL

2. Speed sensor SP2 circuit *1

DTC P0717 INPUT SPEED SENSOR CIRCUIT NO

SIGNAL

3. Shift solenoid valve (SLU) circuit *1

DTC P2759 TORQUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT ELECTRICAL (SHIFT SOLENOID VALVE

SLU)

4. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

Harsh engagement (Any driving position)

ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

Poor acceleration

1. No. 2 ATF temperature sensor circuit *1

DTC P2716 PRESSURE CONTROL SOLENOID "D" ELECTRICAL (SHIFT SOLENOID VALVE SLT)

2. Engine coolant temperature sensor circuit *1

DIAGNOSTIC TROUBLE CODE CHART

3. Shift solenoid valve (SLT) circuit *1

DTC P2716 PRESSURE CONTROL SOLENOID "D" ELECTRICAL (SHIFT SOLENOID VALVE SLT)

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

4. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

No engine braking

ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

No kick-down

ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

Engine stalls when starting off or stopping

1. Shift solenoid valve (SLU) circuit *1

DTC P2759 TOROUE CONVERTER CLUTCH PRESSURE CONTROL SOLENOID CONTROL CIRCUIT ELECTRICAL (SHIFT SOLENOID VALVE

SLU)

2. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

AT OIL TEMP warning light remains on

1. No. 2 ATF temperature sensor circuit *1

DTC P2716 PRESSURE CONTROL SOLENOID "D" ELECTRICAL (SHIFT SOLENOID VALVE SLT)

2. Engine coolant temperature sensor circuit *1

DIAGNOSTIC TROUBLE CODE CHART

3. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

Lock-up at 3rd gear

1. No. 2 ATF temperature sensor circuit *1

DTC P2716 PRESSURE CONTROL SOLENOID "D" ELECTRICAL (SHIFT SOLENOID VALVE SLT)

2. Engine coolant temperature sensor circuit *1

DIAGNOSTIC TROUBLE CODE CHART

3. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

Shift point too high

1. No. 2 ATF temperature sensor circuit *1

DTC P2716 PRESSURE CONTROL SOLENOID "D" ELECTRICAL (SHIFT SOLENOID VALVE SLT)

2. Engine coolant temperature sensor circuit *1

DIAGNOSTIC TROUBLE CODE CHART

3. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

Malfunction in shifting

1. Park/neutral position switch circuit *1

PARK / NEUTRAL POSITION SWITCH

2. ECM

ELECTRONIC CIRCUIT INSPECTION PROCEDURE

CHAPTER 2: ON-VEHICLE REPAIR

PROBLEM SYMPTOMS TABLE

Symptom

Suspected area

See page

Vehicle does not move with shift lever in any forward position and reverse position

1. Transmission control cable

AUTOMATIC TRANSMISSION ASSEMBLY

2. Manual valve

AUTOMATIC TRANSMISSION UNIT

3. Parking lock pawl

AUTOMATIC TRANSMISSION UNIT

4. Off-vehicle

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

repair matrix chart

-

Vehicle does not move with shift lever in R position

1. Valve body assembly

VALVE BODY ASSEMBLY

2. Off-vehicle repair matrix chart

-

No up-shift (1st to 2nd)

1. Valve body assembly

VALVE BODY ASSEMBLY

2. Off-vehicle repair matrix chart

-

No up-shift (2nd to 3rd)

1. Valve body assembly

VALVE BODY ASSEMBLY

2. Off-vehicle repair matrix chart

-

No up-shift (3rd to 4th)

1. Valve body assembly

VALVE BODY ASSEMBLY

2. Off-vehicle repair matrix chart

-

No up-shift (4th to 5th)

1. Valve body assembly

VALVE BODY ASSEMBLY

2. Off-vehicle repair matrix chart

-

No down-shift (5th to 4th)

1. Valve body assembly

VALVE BODY ASSEMBLY

2. Off-vehicle repair matrix chart

-

No down-shift (4th to 3rd)

1. Valve body assembly

VALVE BODY ASSEMBLY

2. Off-vehicle repair matrix chart

-

No down-shift (3rd to 2nd)

1. Valve body assembly

VALVE BODY ASSEMBLY

2. Off-vehicle repair matrix chart

-

No down-shift (2nd to 1st)

1. Valve body assembly

VALVE BODY ASSEMBLY

2. Off-vehicle repair matrix chart

-

No lock-up or No lock-up off

1. Shift solenoid valve (SLU)

DTC P2757 TOROUE CONVERTER CLUTCH

PRESSURE CONTROL SOLENOID PERFORMANCE (SHIFT SOLENOID VALVE

SLU)

2. Valve body assembly

VALVE BODY ASSEMBLY

3. Off-vehicle

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

repair matrix chart

-

Harsh engagement (N to D)

1. Shift solenoid valve (SL1)

DTC P0748 PRESSURE CONTROL SOLENOID "A" ELECTRICAL (SHIFT SOLENOID VALVE

SL1)

2. Valve body assembly

VALVE BODY ASSEMBLY

3. C1 accumulator

AUTOMATIC TRANSMISSION UNIT

4. Off-vehicle repair matrix chart

-

Harsh engagement (Lock-up)

1. Shift solenoid valve (SLU)

DTC P2757 TORQUE CONVERTER CLUTCH

PRESSURE CONTROL SOLENOID PERFORMANCE (SHIFT SOLENOID VALVE

SLU)

2. Valve body assembly

VALVE BODY ASSEMBLY

3. Off-vehicle repair matrix chart

-

Harsh engagement (N to R)

1. Shift solenoid valve (SLT)

DTC P2714 PRESSURE CONTROL SOLENOID "D" PERFORMANCE (SHIFT SOLENOID VALVE SLT)

2. Shift solenoid valve (SLU)

DTC P2757 TORQUE CONVERTER CLUTCH

PRESSURE CONTROL SOLENOID PERFORMANCE (SHIFT SOLENOID VALVE

SLU)

3. Valve body assembly

VALVE BODY ASSEMBLY

4. C3 accumulator

AUTOMATIC TRANSMISSION UNIT

5. Off-vehicle repair matrix chart

-

Harsh engagement (1st to 2nd, 2nd to 3rd, 3rd to 4th and 4th to 5th)

1. Shift solenoid valve (SLT)

DTC P2714 PRESSURE CONTROL SOLENOID "D" PERFORMANCE (SHIFT SOLENOID VALVE SLT)

2. Shift solenoid valve (SL1)

DTC P0748 PRESSURE CONTROL SOLENOID "A" ELECTRICAL (SHIFT SOLENOID VALVE

SL1)

3. Valve body assembly

VALVE BODY ASSEMBLY

Harsh engagement (1st to 2nd)

1. Valve body assembly

VALVE BODY ASSEMBLY

2. B3 accumulator

AUTOMATIC TRANSMISSION UNIT

3. Off-vehicle repair matrix chart

-

Harsh engagement (2nd to

1. Valve body assembly

VALVE BODY ASSEMBLY

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

3rd)

2. C3 accumulator

AUTOMATIC TRANSMISSION UNIT

3. Off-vehicle repair matrix chart

-

Harsh engagement (3rd to 4th)

1. Valve body assembly

VALVE BODY ASSEMBLY

2. C2 accumulator

AUTOMATIC TRANSMISSION UNIT

3. Off-vehicle repair matrix chart

-

Harsh engagement (4th to 5th)

1. Shift solenoid valve (SL1)

DTC P0748 PRESSURE CONTROL SOLENOID "A" ELECTRICAL (SHIFT SOLENOID VALVE

SL1)

2. Shift solenoid valve (SL2)

DTC P0776 PRESSURE CONTROL SOLENOID "B" PERFORMANCE (SHIFT SOLENOID VALVE SL2)

3. Valve body assembly

VALVE BODY ASSEMBLY

4. Off-vehicle repair matrix chart

-

Harsh engagement (5th to 4th)

1. Shift solenoid valve (SL1)

DTC P0748 PRESSURE CONTROL SOLENOID "A" ELECTRICAL (SHIFT SOLENOID VALVE

SL1)

2. Shift solenoid valve (SL2)

DTC P0776 PRESSURE CONTROL SOLENOID "B" PERFORMANCE (SHIFT SOLENOID VALVE SL2)

3. Valve body assembly

VALVE BODY ASSEMBLY

4. Off-vehicle repair matrix chart

-

Slippage or shudder (Forward and reverse)

1. Transmission control cable

AUTOMATIC TRANSMISSION ASSEMBLY

2. Valve body assembly

VALVE BODY ASSEMBLY

3. Oil strainer

VALVE BODY ASSEMBLY

4. Off-vehicle repair matrix chart

-

No engine braking (1st: L position)

1. Valve body assembly

VALVE BODY ASSEMBLY

2. Off-vehicle repair matrix chart

-

No engine braking (2nd: 2 position)

1. Valve body assembly

VALVE BODY ASSEMBLY

2. Off-vehicle repair matrix chart

-

Valve body

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

No kick-down

assembly

VALVE BODY ASSEMBLY

Shift point too high or too low

1. Shift solenoid valve (SLT)

DTC P2714 PRESSURE CONTROL SOLENOID "D" PERFORMANCE (SHIFT SOLENOID VALVE SLT)

2. Shift solenoid valve (SL1)

DTC P0748 PRESSURE CONTROL SOLENOID "A" ELECTRICAL (SHIFT SOLENOID VALVE

SL1)

3. Valve body assembly

VALVE BODY ASSEMBLY

Poor acceleration

1. Shift solenoid valve (SLT)

DTC P2714 PRESSURE CONTROL SOLENOID "D" PERFORMANCE (SHIFT SOLENOID VALVE SLT)

2. Valve body assembly

VALVE BODY ASSEMBLY

Engine stalls when starting off or stopping

1. Shift solenoid valve (SLU)

DTC P2757 TOROUE CONVERTER CLUTCH

PRESSURE CONTROL SOLENOID PERFORMANCE (SHIFT SOLENOID VALVE

SLU)

2. Valve body assembly

VALVE BODY ASSEMBLY

CHAPTER 3: OFF-VEHICLE REPAIR

PROBLEM SYMPTOMS TABLE

Symptom

Suspected area

See

Vehicle does not move with shift lever in any forward position and reverse position

1. Rear planetary gear unit

AUTOMATIC TRANSMISSION UNIT

2. Torque converter clutch

TOROUE CONVERTER CLUTCH AND DRIVE PLATE

Vehicle does not move with shift lever in R position

1. Brake No. 4 (B4)

AUTOMATIC TRANSMISSION UNIT

2. Clutch No. 3 (C3)

AUTOMATIC TRANSMISSION UNIT

3. One-way clutch No.4 (F1)

AUTOMATIC TRANSMISSION UNIT

No up-shift (1st to 2nd)

1. Brake No. 3 (B3)

AUTOMATIC TRANSMISSION UNIT

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

AUTOMATIC TRANSMISSION UNIT

3. One-way clutch No. 2 (F2)

AUTOMATIC TRANSMISSION UNIT

No up-shift (2nd to 3rd)

Clutch No. 3 (C3)

AUTOMATIC TRANSMISSION UNIT

No up-shift (3rd to 4th)

Clutch No. 2 (C2)

AUTOMATIC TRANSMISSION

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

UNIT

No up-shift (4th to 5th)

1. Brake No. 1 (B1)

AUTOMATIC TRANSMISSION UNIT

2. Clutch No. 1 (C1)

AUTOMATIC TRANSMISSION UNIT

No lock-up or No lock-up off

Torque converter clutch

TOROUE CONVERTER CLUTCH AND DRIVE PLATE

Harsh engagement (N to D)

1. Clutch No. 1 (C1)

AUTOMATIC TRANSMISSION UNIT

2. One-way clutch No. 3 (F3)

AUTOMATIC TRANSMISSION UNIT

Harsh engagement (N to R)

1. Clutch No. 3 (C3)

AUTOMATIC TRANSMISSION UNIT

2. Brake No. 4 (B4)

AUTOMATIC TRANSMISSION UNIT

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

AUTOMATIC TRANSMISSION UNIT

Harsh engagement (1st to 2nd)

1. Brake No. 3 (B3)

AUTOMATIC TRANSMISSION UNIT

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

AUTOMATIC TRANSMISSION UNIT

3. One-way clutch No. 2 (F2)

AUTOMATIC TRANSMISSION UNIT

Harsh engagement (2nd to 3rd)

Clutch No. 3 (C3)

AUTOMATIC TRANSMISSION UNIT

Harsh engagement (3rd to 4th)

Clutch No. 2 (C2)

AUTOMATIC TRANSMISSION UNIT

Harsh engagement (4th to 5th)

1. Brake No. 1 (B1)

AUTOMATIC TRANSMISSION UNIT

2. Clutch No. 1 (C1)

AUTOMATIC TRANSMISSION UNIT

Harsh engagement (Lock-up)

Torque converter clutch

TOROUE CONVERTER CLUTCH AND DRIVE PLATE

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

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

AUTOMATIC TRANSMISSION UNIT

2. Clutch No. 3 (C3)

AUTOMATIC TRANSMISSION UNIT

3. Torque converter clutch

TOROUE CONVERTER CLUTCH AND DRIVE PLATE

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

Torque converter clutch

TOROUE CONVERTER CLUTCH AND DRIVE PLATE

1. Brake No. 4 (B4)

AUTOMATIC TRANSMISSION UNIT

2. One-way clutch

AUTOMATIC TRANSMISSION

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

Slippage or shudder (R position)

No. 1 (F1)

UNIT

3. Clutch No. 3 (C3)

AUTOMATIC TRANSMISSION UNIT

Slippage or shudder (1st)

1. Clutch No. 1 (C1)

AUTOMATIC TRANSMISSION UNIT

2. One-way clutch No.3 (F3)

AUTOMATIC TRANSMISSION UNIT

Slippage or shudder (2nd)

1. Clutch No. 1 (C1)

AUTOMATIC TRANSMISSION UNIT

2. Brake No. 3 (B3)

AUTOMATIC TRANSMISSION UNIT

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

AUTOMATIC TRANSMISSION UNIT

4. One-way clutch No. 2 (F2)

AUTOMATIC TRANSMISSION UNIT

Slippage or shudder (3rd)

1. Clutch No. 1 (C1)

AUTOMATIC TRANSMISSION UNIT

2. Clutch No. 3 (C3)

AUTOMATIC TRANSMISSION UNIT

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

AUTOMATIC TRANSMISSION UNIT

Slippage or shudder (4th)

1. Clutch No. 1 (C1)

AUTOMATIC TRANSMISSION UNIT

2. Clutch No. 2 (C2)

AUTOMATIC TRANSMISSION UNIT

Slippage or shudder (5th)

1. Clutch No. 2 (C2)

AUTOMATIC TRANSMISSION UNIT

2. Clutch No. 3 (C3)

AUTOMATIC TRANSMISSION UNIT

3. Brake No. 1 (B1)

AUTOMATIC TRANSMISSION UNIT

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

Clutch No. 1 (C1)

AUTOMATIC TRANSMISSION UNIT

No engine braking (1st: L position)

Brake No. 4 (B4)

AUTOMATIC TRANSMISSION UNIT

No engine braking (2nd: 2 position)

Brake No. 2 (B2)

AUTOMATIC TRANSMISSION UNIT

No engine braking (3rd: 3 position)

Brake No. 1 (B1)

AUTOMATIC TRANSMISSION UNIT

Poor acceleration (All positions)

Torque converter clutch

TORQUE CONVERTER CLUTCH AND DRIVE PLATE

1. Clutch No. 1 (C1)

AUTOMATIC TRANSMISSION UNIT

2. Clutch No. 3

AUTOMATIC TRANSMISSION

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

Poor acceleration (5th)

(C3)

UNIT

3. Brake No. 1 (B1)

AUTOMATIC TRANSMISSION UNIT

4. Front planetary gear unit

AUTOMATIC TRANSMISSION UNIT

Engine stalls when starting off or stopping

Torque converter clutch

TORQUE CONVERTER CLUTCH AND DRIVE PLATE

TERMINALS OF ECM

TERMINALS OF ECM

Fig. 10: Identifying Terminals Of ECM

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 10: Identifying Terminals Of ECM

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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 be inspected. The standard voltage between the terminals is shown under "Specified Condition".

Use the illustration above as a reference for the ECM terminals.

TERMINAL NO. AND SPECIFIED CONDITION

Symbols (Terminal No.)

Wiring Color

Terminal Description

Condition

Specified Condition

LMS (E5-9) - E1 (E6-1))

P-L - BR

L shift position switch signal

Ignition switch ON

10 to 14 V

Ignition switch ON and press continuously shift position L switch

Below 1 V

2 (E5-10) - E1 (E6-1)

LG - BR

2 shift position switch signal

Ignition switch ON and shift lever 2 or L position

10 to 14 V

Ignition switch ON and shift lever except 2 and L positions

Below 1 V

R (E5-11) - E1 (E6-1)

B-Y - BR

R shift position switch signal

Ignition switch ON and shift lever R position

10 to 14 V

Ignition switch ON and shift

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

lever except R position

Below 1 V

D (E5-21) - E1 (E6-1)

W-R -BR

D shift position switch signal

Ignition switch ON and shift lever D or 4 position

10 to 14 V

Ignition switch ON and shift lever except D and 4 positions

Below 1 V

3 (E5-19) - E1 (E6-1)

L - BR

3 shift position switch signal

Ignition switch ON and shift lever 3 position

10 to 14 V

Ignition switch ON and shift lever except 3 position

Below 1 V

ODMS (E4-12) -E1 (E6-1)

L-W - BR

O/D main switch signal

Ignition switch ON

10 to 14 V

Ignition switch ON and press continuously O/D main switch

Below 1 V

STP (E4-15) - E1 (E6-1)

G-Y - BR

Stop light switch signal

Brake pedal is depressed

7.5 to 14 V

Brake pedal is released

Below 1.5 V

SLU+ (E7-15) -SLU- (E7-14)

P-L - L-W

SLU solenoid signal

5th (lock-up) gear

Pulse generation (See

WAVEFORM 1)

S2 (E7-10) - E1 (E6-1)

W-L - BR

S2 solenoid signal

2nd or 3rd gear

10 to 14 V

1st, 4th or 5th gear

Below 1 V

S1 (E7-11) - E1 (E6-1)

R - BR

S1 solenoid signal

1st or 2nd gear

10 to 14 V

3rd, 4th or 5 th gear

Below 1 V

SLT+ (E7-13) -SLT- (E7-12)

Y

SLT solenoid signal

Engine idle speed

Pulse generation (See

WAVEFORM 2)

SR (E7-9) - E1 (E6-1)

G-R - BR

SR solenoid signal

5th gear

10 to 14 V

1st gear

Below 1 V

SL2+ (E7-17) -SL2- (E7-16)

GR - LG-B

SL2 solenoid signal

Engine idle speed

Pulse generation (See

WAVEFORM 3)

SL1+ (E7-19) -SL1- (E7-18)

R-B - L

SL1 solenoid signal

Engine idle speed

Pulse generation (See

WAVEFORM 4)

THO1 (E7-24) - E2 (E8-28)

G - G-W

No. 1 ATF temperature sensor signal

No. 1 ATF temperature: 115°C (239°F) or more

Below 1.5 V

THO2 (E7-32) - E2 (E8-28)

B-L - GW

No.2 ATF temperature sensor signal

No.2 ATF temperature: 115°C (239°F) or more

Below 1.5 V

SP2+ (E7-34) -SP2- (E7-26)

W-R - Y-R

Speed sensor (SP2) signal

Vehicle speed 12 mph (20 km/h)

Pulse generation (See

WAVEFORM 5)

NT+ (E7-35) - NT-(E7-27)

B - W

Speed sensor (NT) signal

Engine idle speed

Pulse generation (See

WAVEFORM 6)

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

STAR/NSW (E7-8)

B - BR

Park neutral switch

Ignition switch ON and shift lever P or N position

Below 2 V

- E1 (E6-1)

signal

Ignition switch ON and shift lever except P and N positions

10 to 14 V

1. Waveform 1 (Reference)

1. Waveform 1 (Reference)

WAVEFORM 1 REFERENCE

Item

Content

Symbols (Terminal No.)

SLT+ (E7-13) - SLT- (E7-12)

Tool Setting

5 V/DIV, 1 ms/DIV

Condition

Engine idle speed

Find Code P0985 Toyota

Fig. 11: Identifying Waveform 1

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 11: Identifying Waveform 1

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2. Waveform 2 (Reference)

WAVEFORM 2 REFERENCE

Item

Content

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

Symbols (Terminal No.)

SLU+ (E7-15) - SLU- (E7-14)

Tool Setting

5 V/DIV, 1 ms/DIV

Condition

5th (lock-up) gear

Sequoia Symbol

Fig. 12: Identifying Waveform 2

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 12: Identifying Waveform 2

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

3. Waveform 3 (Reference)

WAVEFORM 3 REFERENCE

Item

Content

Symbols (Terminal No.)

SL2+ (E7-17) - SL2- (E7-16)

Tool Setting

5 V/DIV, 1 ms/DIV

Condition

Engine idle speed

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

Yangon Electric Transmission Graph

Fig. 13: Identifying Waveform 3

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 13: Identifying Waveform 3

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

4. Waveform 4 (Reference)

WAVEFORM 4 REFE]

RENCE

Item

Content

Symbols (Terminal No.)

SL1+ (E7-19) - SL1- (E7-18)

Tool Setting

5 V/DIV, 1 ms/DIV

Condition

Engine idle speed

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

Fig. 14: Identifying Waveform 4

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 14: Identifying Waveform 4

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

5. Waveform 5 (Reference)

WAVEFORM 5 REFE]

RENCE

Item

Content

Symbols (Terminal No.)

SP2+ (E7-34) - SP2- (E7-26)

Tool Setting

2 V/DIV, 20 ms/DIV

Condition

Vehicle speed 12 mph (20 km/h)

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

Fig. 15: Identifying Waveform 5

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 15: Identifying Waveform 5

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

6. Waveform 6 (Reference)

WAVEFORM 6 REFERENCE

Item

Content

Symbols (Terminal No.)

NT+ (E7-35) - NT- (E7-27)

Tool Setting

1 V/DIV, 2 ms/DIV

Condition

Engine idle speed (shift lever P or N position)

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

2006 Toyota Oil Chart

Fig. 16: Identifying Waveform 6

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 16: Identifying Waveform 6

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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