Toyota Sequoia (2005). Manual - part 207

D11993

(+)

(–)

Shift Solenoid Valve SR:

–

DIAGNOSTICS

AUTOMATIC TRANSMISSION

DI–623

817

1

Check other DTCs output (in addition to DTC P0771).

PREPARATION:
(a)

Turn the ignition switch off.

(b)

Connect the OBD II scan tool or hand–held tester to the DLC3.

(c)

Turn the ignition switch to the ON position.

(d)

Turn on the tester.

(e)

Select the item ”DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES”.

CHECK:
Read the DTCs using the OBD II scan tool or the hand–held tester.
RESULT:

Display (DTC output)

Proceed to

Only ”P0771” is output

A

”P0771” and other DTCs

B

HINT:
If any other codes besides ”P0771” are output, perform troubleshooting for those DTCs first.

B

Go to DTC chart (See page 

DI–573

).

A

2

Inspect shift solenoid valve SR operation.

PREPARATION:
Remove the shift solenoid valve SR (See page 

AT–10

).

CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Tester Connection

Specified Condition

20



C (68



F)

Solenoid Connector (SR) – Solenoid

Body (SR)

11 to 15 

Ω

CHECK:
Connect the positive (+) lead to the terminal of the solenoid con-
nector, and the negative (–) lead to the solenoid body.
OK:

The solenoid makes an operating sound.

NG

Replace shift solenoid valve SR
(See page 

AT–10

).

OK

D12795

1

2

(–)

(+)

1

2

Shift Solenoid Valve SL1:

DI–624

–

DIAGNOSTICS

AUTOMATIC TRANSMISSION

818

3

Inspect shift solenoid valve SL1.

PREPARATION:
Remove the shift solenoid valve SL1 (See page 

AT–10

).

CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:

Tester Connection

Specified Condition

20



C (68



F)

1 – 2

5.0 to 5.6 

Ω

CHECK:
Connect the positive (+) lead with a 21 W bulb to terminal 2 and
the negative (–) lead to terminal 1 of the solenoid valve connec-
tor, then check the movement of the valve.
OK:

The solenoid makes an operating sound.

 

NG

Replace the shift solenoid valve SL1
(See page 

AT–10

).

OK

4

Inspect valve body 

(See page 

AT–10

).

OK:

There are no foreign objects on each valve.

NG

Repair or replace valve body.

OK

Repair or replace transmission (See page 

AT–25

).

–

DIAGNOSTICS

AUTOMATIC TRANSMISSION

DI–625

819

DTC

P0776

Pressure Control Solenoid ”B” Performance
(Shift Solenoid Valve SL2)

SYSTEM DESCRIPTION

The ECM uses signals from the output shaft speed sensor and input speed sensor to detect the actual gear
position (1st, 2nd, 3rd, 4th or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
problems of the shift solenoid valves, valve body or automatic transmission (clutch, brake or gear, etc.).

DTC No.

DTC Detection Condition

Trouble Area

P0776

The gear required by the ECM does not match the actual gear

when driving (2–trip detection logic)



Shift solenoid valve SL2 remains open or closed



Valve body is blocked



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

MONITOR 

DESCRIPTION

This DTC indicates ”stuck ON malfunction” or ”stuck OFF malfunction” of the shift solenoid valve SL2.
The ECM commands gear shifts by turning the shift solenoid valves ”ON/OFF”. When the gear position com-
manded by the ECM and the actual gear position are not the same, the ECM illuminates the MIL and stores
the DTC.

MONITOR STRATEGY

Related DTCs

P0776

Shift solenoid valve SL2/ON malfunction

R

i d

/C

t

Main

Shift solenoid valve SL2

Required sensors/Components

Sub

Speed sensor (NT), Speed sensor (NO), Crankshaft position sensor (NE)

Frequency of operation

Continuous

ON malfunctions (A), (B) and

(C)

0.4 sec.

Duration

ON malfunction (D)

3 sec.

ON malfunction (E)

0.5 sec.

MIL operation

2 driving cycles

Sequence of operation

None

DIDJF–01

DI–626

–

DIAGNOSTICS

AUTOMATIC TRANSMISSION

820

TYPICAL ENABLING CONDITIONS

It

Specification

Item

Minimum

Maximum

All:

Turbine speed sensor circuit

Not circuit malfunction

Output speed sensor circuit

Not circuit malfunction

Shift solenoid valve S1 circuit

Not circuit malfunction

Shift solenoid valve S2 circuit

Not circuit malfunction

Shift solenoid valve SR circuit

Not circuit malfunction

Shift solenoid valve SL1 circuit

Not circuit malfunction

Shift solenoid valve SL2 circuit

Not circuit malfunction

ECT (Engine coolant temperature) sensor

circuit

Not circuit malfunction

KCS sensor circuit

Not circuit malfunction

ETCS (Electric throttle control system)

Not system down

Transmission range

”D”

ECT

40

°

C (104

°

F) or more

–

Spark advance from Max. retard timing by

KCS control

0

°

 

CA or more

–

Engine

Starting

Transfer range

”HIGH”

*1

Transfer range ”HIGH” *1 (This condition is applied only 4WD)

*1 Following conditions met

 Vehicle speed sensor circuit

Not circuit malfunction

 Output shaft speed sensor circuit

Not circuit malfunction

 Transfer output speed

143 rpm or more

–

 NO/NOtf (Transfer input speed/Transfer

output speed)

0.9 to 1.1

ON malfunction (A)

ECM selected gear

1st

Vehicle speed

2 to 40 km/h (1.2 to 24.9 mph)

Throttle valve opening angle

7.0% or more at 2,000 rpm

(Conditions vary with engine speed)

–

ON malfunction (B)

ECM selected gear

3rd

Vehicle speed

2 km/h (1.2 mph) or more

–

Throttle valve opening angle

7.0% or more at 2,000 rpm

(Conditions vary with engine speed)

–

ON malfunction (C)

ECM selected gear

4th

Vehicle speed

2 km/h (1.2 mph) or more

–

Throttle valve opening angle

7.0% or more at 2,000 rpm

(Conditions vary with engine speed)

–

ON malfunction (D)

Current ECM selected gear

5th

Last ECM selected gear

4th