Toyota Tundra (2015 year). Manual — part 363
OK
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
18 (SLT+) - 7 (SLT-)
20°C (68°F)
5.0 to 5.6 Ω
18 (SLT+) - Body ground
Always
10 kΩ or higher
7 (SLT-) - Body ground
Always
10 kΩ or higher
Text in Illustration
*a
Component without harness connected
(Transmission Wire)
NG
GO TO STEP 3
2.
CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)
(a) Disconnect the D74 ECM connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D74-9 (SLT+) - D74-8 (SLT-)
20°C (68°F)
5.0 to 5.6 Ω
D74-9 (SLT+) - Body ground
Always
10 kΩ or higher
D74-8 (SLT-) - Body ground
Always
10 kΩ or higher
Text in Illustration
*a
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
OK
REPLACE ECM
3.
INSPECT SHIFT SOLENOID VALVE SLT
NG
REPLACE SHIFT SOLENOID VALVE SLT
OK
REPAIR OR REPLACE TRANSMISSION WIRE
A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM0000012XR095X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMISSION SYSTEM: P2742,P2743; Transmission
Fluid Temperature Sensor "B" Circuit Low Input; 2015 MY Tundra [08/2014 - ]
DTC
P2742
Transmission Fluid Temperature Sensor "B" Circuit Low Input
DTC
P2743
Transmission Fluid Temperature Sensor "B" Circuit High Input
DESCRIPTION
If the ECM detects an abnormally high ATF temperature near this sensor, the ATF temperature warning light
illuminates or a message is displayed in the combination meter.
HINT:
below.
NO. 2 ATF
TEMPERATURE
SENSOR STATE
DETECTION
CONDITION
SYMPTOM
RECOVERY CONDITION
Sensor is normal
ATF temperature
more than 150°C
(302°F)
ATF temperature warning light is
illuminated or message is displayed
in combination meter
ATF temperature less than
135°C (275°F)*1
ATF temperature
more than 130°C
(266°F)
Shift point too high
ATF temperature less than
110°C (230°F)
When conditions (a)
and (b) are satisfied.
(a) ATF temperature
more than 130°C
(266°F)
(b) Engine coolant
temperature more
than 95°C (203°F)
Lock-up in 3rd gear*2
ATF temperature less than
110°C (230°F)*1 and engine
coolant temperature more
than 95°C (203°F)
Sensor is short-
circuited
Any conditions
ATF temperature warning
light blinks or message is
displayed in combination
meter
Shift point too high
Symptoms persist
A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
HINT:
*1: When the ATF is normal, it decreases to less than 135°C (275°F) within 5 minutes with the shift lever
in P or N in an idling state.
*2: When ATF temperature is normal, transmission lock-up occurs in 5th or 6th gear with the shift lever in
D or with the S6 range selected, in 5th gear with the S5 range selected, and in 4th gear with the S4 range
selected.
DTC
CODE
DTC DETECTION CONDITION
TROUBLE AREA
P2742
No. 2 ATF temperature sensor resistance is less than 25 Ω
(0.046 V) for 0.5 seconds or more (1-trip detection logic).
Short in No. 2 ATF
temperature sensor
circuit
Transmission wire (No. 2
ATF temperature sensor)
ECM
P2743
No. 2 ATF temperature sensor resistance is higher than 156 kΩ
(4.915 V) for 0.5 sec. or more and either condition is met (1-trip
detection logic):
(A) 15 min. or more have elapsed after the engine start when
the engine coolant temperature or intake air temperature is
-29.375°C (-20.875°F) or less.
(B) 10 sec. or more have elapsed after the engine start when the
engine coolant temperature and intake air temperature are
higher than -29.375°C (-20.875°F).
Open in No. 2 ATF
temperature sensor
circuit
Transmission wire (No. 2
ATF temperature sensor)
ECM
MONITOR DESCRIPTION
The ATF temperature sensor converts the ATF temperature into an electrical resistance value. Based on the
resistance, the ECM determines the ATF temperature, and the ECM detects an open or short in the ATF
ATF temperature warning light blinks or a message is displayed in the combination meter.
HINT:
Refer to DTC P0712
.
INSPECTION PROCEDURE
1. DATA LIST
HINT:
A760E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
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