Toyota Sequoia (2005). Manual — part 212
ECM command gearshift
Shift solenoid valve S1
1st
2nd
3rd
4th
5th
OFF
OFF
ON
OFF
ON
1
15
2
3
4
5
6
7
8
9
10
11
12
13
14
D11994
Transmission Wire Side:
(Connector Front View):
E1
S1
–
DIAGNOSTICS
AUTOMATIC TRANSMISSION
DI–643
837
INSPECTION PROCEDURE
HINT:
The shift solenoid valve S1 is turned on/off normally when the shift lever is in the D position:
1
Check transmission wire.
PREPARATION:
Disconnect the transmission wire connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester Connection
Specified Condition
20
C (68
F)
8 – Body ground
11 to 15
Ω
NG
Go to step 3.
OK
D14166
ECM:
E8
E7
E6
E5
E4
S1
DI–644
–
DIAGNOSTICS
AUTOMATIC TRANSMISSION
838
2
Check harness and connector (Transmission wire – ECM)
PREPARATION:
(a)
Connect the transmission wire connector.
(b)
Disconnect the ECM connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester Connection
Specified Condition
20
C (68
F)
E7 – 11 (S1) – Body ground
11 to 15
Ω
NG
Repair or replace the harness or connector
(See page
).
OK
Replace the ECM (See page
D11991
(+)
(–)
Shift Solenoid Valve S1:
–
DIAGNOSTICS
AUTOMATIC TRANSMISSION
DI–645
839
3
Check shift solenoid valve S1.
PREPARATION:
Remove the shift solenoid valve S1 (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 (S1) – Solenoid
Body (S1)
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 the shift solenoid valve S1
(See page
OK
Repair or replace the transmission wire
(See page
).
DI–646
–
DIAGNOSTICS
AUTOMATIC TRANSMISSION
840
DTC
P0976
Shift Solenoid ”B” Control Circuit Low
(Shift Solenoid Valve S2)
DTC
P0977
Shift Solenoid ”B” Control Circuit High
(Shift Solenoid Valve S2)
CIRCUIT DESCRIPTION
Shifting from 1st to 5th is performed in combination with ”ON” and ”OFF” operation of the shift solenoid valves
SL1, SL2, S1, S2 and SR which are controlled by the ECM. If an open or short circuit occurs in either of the
shift solenoid valves, the ECM controls the remaining normal shift solenoid valves to allow the vehicle to be
operated smoothly (See page
).
DTC No.
DTC Detection Condition
Trouble Area
P0976
ECM detects short in solenoid valve S2 circuit 2 times when
solenoid valve S2 is operated (1–trip detection logic)
Short in shift solenoid valve S2 circuit
Shift solenoid valve S2
ECM
P0977
ECM detects open in solenoid valve S2 circuit 2 times when
solenoid valve S2 is not operated (1–trip detection logic)
Open in shift solenoid valve S2 circuit
Shift solenoid valve S2
ECM
MONITOR
DESCRIPTION
These DTCs indicate an open or short in the shift solenoid valve S2 circuit. When there is an open or short
circuit in any shift solenoid valve circuit, the ECM detects the problem and illuminates the MIL and stores
the DTC. When the shift solenoid valve S2 is on, if resistance is 8
Ω
or less, the ECM determines there is
a short in the shift solenoid valve S2 circuit.
When the shift solenoid valve S2 is off, if resistance is 100 k
Ω
or more, the ECM determines there is an open
in the shift solenoid valve S2 circuit (See page
MONITOR STRATEGY
R l t d DTC
P0976
Shift solenoid valve S2/Range check (Low resistance)
Related DTCs
P0977
Shift solenoid valve S2/Range check (High resistance)
Required sensors/Components
Shift solenoid valve S2
Frequency of operation
Continuous
Duration
0.064 sec.
MIL operation
Immediate
Sequence of operation
None
DIDJJ–01
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст