Toyota Sequoia (2005). Manual — part 194

–

DIAGNOSTICS

AUTOMATIC TRANSMISSION

DI–571

765

LOCK UP SOL

Lock Up Solenoid Status/

ON or OFF

Lock Up: ON

Except Lock Up: OFF

–

SOLENOID (SLT)

Shift Solenoid SLT Status/

ON or OFF

Accelerator pedal is depressed:

OFF

Accelerator pedal is released:

ON

–

SOLENOID (SLU)

Shift Solenoid SLU Status/

ON or OFF

Lock Up: ON

Except Lock Up: OFF

–

AT FLUID TEMP 1

ATF Temp. Sensor No.1 Value/

min.: –40

C (–40

F)

max.: 215

C (419

F)

After Stall Test;

Approx. 80

C (176

F)

Equal to ambient temperature

when cold soak

If the value is ”–40

C (–40

F)” or

”215

C (419

F)”, ATF temp. sen-

sor No.1 circuit is open or shorted.

AT FLUID TEMP 2

ATF Temp. Sensor No.2 Value/

min.: –40

C (–40

F)

max.: 215

C (419

F)

After Stall Test;

Approx. 80

C (176

F)

Equal to ambient temperature

when cold soak

If the value is ”–40

C (–40

F)” or

”215

C (419

F)”, ATF temp. sen-

sor No.2 circuit is open or shorted.

SPD (SP2)

Output shaft Speed/

min.: 0 km/h (0 mph)

max.: 255 km/h (158 mph)

Vehicle stopped: 0 km/h (0 mph)

[HINT]

Equal to vehicle speed

–

SPD (NT)

Input Turbine Speed/

display: 50 r/min

[HINT]

Lock–up ON (After warming up

the engine);

Input Turbine speed (NT) equal to

the engine speed.

Lock–up OFF (Idling at N posi-

tion);

Input Turbine speed (NT) nearly

equal to the engine speed.

–

DI–572

–

DIAGNOSTICS

AUTOMATIC TRANSMISSION

766

2.

ACTIVE TEST

HINT:
Performing the ACTIVE TEST using the hand–held tester allows the relay, VSV, actuator and so on to oper-
ate without parts removal. Performing the ACTIVE TEST as the first step of troubleshooting is one method
to shorten labor time.
It is possible to display the DATA LIST during the ACTIVE TEST.
(a)

Warm up the engine.

(b)

Turn the ignition switch off.

(c)

Connect the hand–held tester to the DLC3.

(d)

Turn the ignition switch to the ON position.

(e)

Turn on the tester.

(f)

Select the item ”DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST”.

(g)

According to the display on the tester, perform the ”ACTIVE TEST”.

Item

Test Details

Diagnostic Note

SHIFT

[Test Details]

Operate the shift solenoid valve and set each shift position by yourself.

[Vehicle Condition]

Less than 50 km/h (31 mph)

[Others]

Press ”

→

” button: Shift up

Press ”

←

” button: Shift down

Possible to check the operation of

the shift solenoid valves.

LOCK UP

[Test Details]

Control the shift solenoid SLU to set the automatic transmission to the

lock–up condition.

[Vehicle Condition]

Throttle valve opening angle: Less than 35 %

Vehicle Speed: 60 km/h (37 mph) or more

Possible to check the SLU opera-

tion.

LINE PRESS UP *

[Test Details]

Operate the shift solenoid SLT and raise the line pressure.

[Vehicle Condition]

Vehicle Stopped.

IDL: ON

[HINT]

OFF: Line pressure up (When the active test of ”Control the Line Pres-

sure Up” is performed, the ECM commands the SLT solenoid to turn

off).

ON: No action (normal operation)

–

*: ”LINE PRESS UP” in the ACTIVE TEST is performed to check the line pressure changes by connecting
the SST to the automatic transaxle, which is used in the HYDRAULIC TEST (See page

DI–540

) as well.

HINT:
The pressure values in ACTIVE TEST and HYDRAULIC TEST are different from each other.

DIDJ4–01

–

DIAGNOSTICS

AUTOMATIC TRANSMISSION

DI–573

767

DIAGNOSTIC TROUBLE CODE CHART

If a DTC is displayed during the DTC check, check the parts listed in the table below and proceed to the page
given.
HINT:

*1 :

... The MIL (Malfunction Indicator Lamp) lights up

*2 :

... The ECM memorizes the trouble code if the ECM detects the DTC detection condition.

This DTC may be output when the clutch, brake and gear components etc. inside the automatic trans-
mission are damaged.

DTC No.

(See Page)

Detection Item

Trouble Area

MIL *

1

Memory *

2

P0500

(

DI–278

)

Vehicle Speed Sensor ”A”

Open or short in speed sensor (SP2) circuit

Speed sensor (SP2)

ECM

P0705

(

DI–576

)

Transmission Range Sensor Cir-

cuit Malfunction (PRNDL Input)

Open or short in park/neutral position switch circuit

Park/neutral position switch

ECM

P0710

(

DI–582

)

Transmission Fluid Temperature

Sensor ”A” Circuit

Open or short in ATF temperature sensor No.1 circuit

Transmission wire (ATF temperature sensor No.1)

ECM

P0711

(

DI–588

)

Transmission Fluid Temperature

Sensor ”A” Performance

Transmission wire (ATF temperature sensor No.1)

P0712

(

DI–582

)

Transmission Fluid Temperature

Sensor ”A” Circuit Low Input

Short in ATF temperature sensor No.1 circuit

Transmission wire (ATF temperature sensor No.1)

ECM

P0713

(

DI–582

)

Transmission Fluid Temperature

Sensor ”A” Circuit High Input

Open in ATF temperature sensor No.1 circuit

Transmission wire (ATF temperature sensor No.1)

ECM

P0717

(

DI–591

)

Input Speed Sensor Circuit No

Signal

Open or short in speed sensor (NT) circuit

Speed sensor (NT)

ECM

Automatic transmission (clutch, brake or gear, etc.)

P0722

(

DI–596

)

Output Speed Sensor Circuit No

Signal

Open or short in speed sensor (SP2) circuit

Speed sensor (SP2)

ECM

Automatic transmission (clutch, brake or gear, etc.)

P0724

(

DI–600

)

Brake Switch ”B” Circuit High

Short in stop light switch signal circuit

Stop light switch

ECM

P0748

(

DI–603

)

Pressure Control Solenoid ”A”

Electrical

(Shift Solenoid Valve SL1)

Open or short in shift solenoid valve SL1 circuit

Shift solenoid valve SL1

ECM

P0751

(

DI–608

)

Shift Solenoid ”A” Performance

(Shift Solenoid Valve S1)

Shift solenoid valve S1 remains open or closed

Valve body is blocked

Automatic transmission (clutch, brake or gear, etc.)

P0756

(

DI–614

)

Shift Solenoid ”B” Performance

(Shift Solenoid Valve S2)

Shift solenoid valve S2 remains open or closed

Valve body is blocked

Automatic transmission (clutch, brake or gear, etc.)

P0771

(

DI–620

)

Shift Solenoid ”E” Performance

(Shift Solenoid Valve SR)

Shift solenoid valve SR remains open or closed

Shift solenoid valve SL1 remains open or closed

Valve body is blocked

Automatic transmission (clutch, brake or gear, etc.)

DI–574

–

DIAGNOSTICS

AUTOMATIC TRANSMISSION

768

P0776

(

DI–625

)

Pressure Control Solenoid ”B”

Performance

(Shift Solenoid Valve SL2)

Shift solenoid valve SL2 remains open or closed

Valve body is blocked

Automatic transmission (clutch, brake or gear, etc.)

P0778

(

DI–631

)

Pressure Control Solenoid ”B”

Electrical

(Shift Solenoid Valve SL2)

Open or short in shift solenoid valve SL2 circuit

Shift solenoid valve SL2

ECM

P0781

(

DI–636

)

1–2 Shift (1 –2 Shift Valve)

Valve body is blocked up or stuck (1–2 shift valve)

Automatic transmission (clutch, brake or gear, etc.)

P0973

(

DI–641

)

Shift Solenoid ”A” Control Circuit

Low (Shift Solenoid Valve S1)

Short in shift solenoid valve S1 circuit

Shift solenoid valve S1

ECM

P0974

(

DI–641

)

Shift Solenoid ”A” Control Circuit

High (Shift Solenoid Valve S1)

Open in shift solenoid valve S1 circuit

Shift solenoid valve S1

ECM

P0976

(

DI–646

)

Shift Solenoid ”B” Control Circuit

Low (Shift Solenoid Valve S2)

Short in shift solenoid valve S2 circuit

Shift solenoid valve S2

ECM

P0977

(

DI–646

)

Shift Solenoid ”B” Control Circuit

High (Shift Solenoid Valve S2)

Open in shift solenoid valve S2 circuit

Shift solenoid valve S2

ECM

P0985

(

DI–651

)

Shift Solenoid ”E” Control Circuit

Low (Shift Solenoid Valve SR)

Short in shift solenoid valve SR circuit

Shift solenoid valve SR

ECM

P0986

(

DI–651

)

Shift Solenoid ”E” Control Circuit

High (Shift Solenoid Valve SR)

Open in shift solenoid valve SR circuit

Shift solenoid valve SR

ECM

P2714

(

DI–656

)

Pressure Control Solenoid ”D”

Performance

(Shift Solenoid Valve SLT)

Shift solenoid valve SLT remains open or closed

Valve body is blocked

Automatic transmission (clutch, brake or gear, etc.)

P2716

(

DI–662

)

Pressure Control Solenoid ”D”

Electrical

(Shift Solenoid Valve SLT)

Open or short in shift solenoid valve SLT circuit

Shift solenoid valve SLT

ECM

P2740

(

DI–666

)

Transmission Fluid Temperature

Sensor ”B” Circuit

Open or short in ATF temperature sensor No.2 circuit

Transmission wire (ATF temperature sensor No.2)

ECM

P2742

(

DI–666

)

Transmission Fluid Temperature

Sensor ”B” Circuit Low Input

Short in ATF temperature sensor No.2 circuit

Transmission wire (ATF temperature sensor No.2)

ECM

P2743

(

DI–666

)

Transmission Fluid Temperature

Sensor ”B” Circuit High Input

Open in ATF temperature sensor No.2 circuit

Transmission wire (ATF temperature sensor No.2)

ECM

P2757

(

DI–672

)

Torque Converter Clutch Pres-

sure Control Solenoid Perfor-

mance

(Shift Solenoid Valve SLU)

Shift solenoid valve SLU remains open or closed

Valve body is blocked

Torque converter clutch

Automatic transmission (clutch, brake or gear, etc.)

Line pressure is too low

P2759

(

DI–680

)

Torque Converter Clutch Pres-

sure Control Solenoid Control

Circuit Electrical

(Shift Solenoid Valve SLU)

Open or short in shift solenoid valve SLU circuit

Shift solenoid valve SLU

ECM