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
).
A
2
Inspect shift solenoid valve SR operation.
PREPARATION:
Remove the shift solenoid valve SR (See page
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
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
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
OK
4
Inspect valve body
OK:
There are no foreign objects on each valve.
NG
Repair or replace valve body.
OK
Repair or replace transmission (See page
–
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
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст