Toyota Sequoia (2005). Manual — part 217
D14174
ECM
SLT+
SLT–
E7
13
12
B–R
G–Y
E1 Electronically Controlled
Transmission Solenoid
E7
G
GR
14
6
SLT+
SLT–
+B
1
15
2
3
4
5
6
7
8
9
10
11
12
13
14
D11994
Transmission Wire Side:
(Connector Front View):
E1
SLT–
SLT+
–
DIAGNOSTICS
AUTOMATIC TRANSMISSION
DI–663
857
WIRING DIAGRAM
INSPECTION PROCEDURE
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)
14 (SLT+) – 6 (SLT–)
5.0 to 5.6
Ω
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester Connection
Specified Condition
14 (SLT+) – Body ground
10 k
Ω
or higher
6 (SLT–) – Body ground
↑
NG
Go to step 3.
OK
D14166
ECM:
SLT+
SLT–
E8
E7
E6
E5
E4
DI–664
–
DIAGNOSTICS
AUTOMATIC TRANSMISSION
858
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 – 13 (SLT+) – E7 – 12 (SLT–)
5.0 to 5.6
Ω
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester Connection
Specified Condition
E7 – 13 (SLT+) – Body ground
10 k
Ω
or higher
E7 – 12 (SLT–) – Body ground
↑
NG
Repair or replace the harness or connector
(See page
).
OK
Replace the ECM (See page
D11987
2
1
(+)
(–)
Shift Solenoid Valve SLT:
–
DIAGNOSTICS
AUTOMATIC TRANSMISSION
DI–665
859
3
Inspect shift solenoid valve SLT.
PREPARATION:
Remove the shift solenoid valve SLT (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 SLT
(See page
OK
Repair or replace the transmission wire
(See page
).
DI–666
–
DIAGNOSTICS
AUTOMATIC TRANSMISSION
860
DTC
P2740
Transmission Fluid Temperature Sensor ”B”
Circuit
DTC
P2742
Transmission Fluid Temperature Sensor ”B”
Circuit Low Input
DTC
P2743
Transmission Fluid Temperature Sensor ”B”
Circuit High Input
CIRCUIT DESCRIPTION
ATF (Automatic Transmission Fluid) temperature sensor No.2 is on the transmission and just in front of the
oil cooler inlet pipeline.
If ECM detects the abnormally high temperature of ATF by this sensor, it draws driver’s attention by illuminat-
ing the warning lamp.
HINT:
The temperature of ATF easily rises when towing, climbing hills and in traffic, etc.
If the ATF temperature sensor No.2 becomes short–circuited, the signal that indicates the ATF temper-
ature is 150
C (302
F) or higher is input in ECM.
Vehicle conditions when the sensor is normal and when the sensor is short–circuited are indicated
in the table below.
ATF temperature Sensor No.2
State
Detection Condition
Symptom
Recovery Condition
AT fluid temp. more than 150
C
(302
F).
AT Oil Temp. warning light re-
mains on
AT fluid temp. less than 135
C
(275
F). *
2
AT fluid temp. more than 130
C
(266
F).
Shift point too high.
AT fluid temp. less than 110
C
(230
F).
Sensor is normal
When the conditions (a) and (b)
are satisfied.
(a) AT fluid temp. more than 130
C
(266
F).
(b) Engine coolant temp. more
than 95
C (203
F).
Lock–up at 3rd gear. *
1
AT fluid temp. less than 110
C
(230
F) *
2
and engine coolant
temp. less than 95
C (203
F).
Sensor is short–circuited
Any conditions.
AT Oil Temp. warning light re-
mains on
Shift point too high.
Symptoms still occur
Sensor is short circuited
Engine coolant temp. more than
95
C (203
F).
Lock–up at 3rd gear. *
1
Symptoms still occur
HINT:
*1: When AT fluid temperature is normal, transmission locks up at 5th gear with the shift lever in D position
and at 4th gear with the shift lever in 4 position.
*2: When AT fluid temperature is in normal range, it decreases to less than 135
C (275
F) within 5 minutes
with the shift lever in P or N position in an idling state.
DIDJN–01
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