Toyota Tundra (2015 year). Manual — part 606
OK
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
13 (SLT+) - 5 (SLT-)
20°C (68°F)
5.0 to 5.6 Ω
13 (SLT+) - Body ground
Always
10 kΩ or higher
5 (SLT-) - Body ground
Always
10 kΩ or higher
NG
GO TO STEP 3
2.
CHECK HARNESS AND CONNECTOR (NO. 1 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
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPLACE ECM
3.
INSPECT SHIFT SOLENOID VALVE SLT
AB60E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
(a) Remove shift solenoid valve SLT.
(b) Measure the resistance according to the value(s) in the table
below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
1 - 2
20°C (68°F)
5.0 to 5.6 Ω
(c) Connect the battery's positive (+) lead with a 21 W bulb to
Valve moves and makes an operating noise.
NG
REPLACE SHIFT SOLENOID VALVE SLT
OK
REPAIR OR REPLACE NO. 1 TRANSMISSION WIRE
AB60E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM0000012XR098X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: AB60E 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 the 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 at 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
Symptoms still occur
AB60E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
NO. 2 ATF
TEMPERATURE
SENSOR STATE
DETECTION
CONDITION
SYMPTOM
RECOVERY CONDITION
Shift point too high
Engine coolant
temperature more
than 95°C (203°F)
Lock-up at 3rd gear*2
Symptoms still occur
HINT:
*1: When ATF temperature is in the normal range, 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
the D position or S6 range, in 5th gear with the shift lever in the S5 range, and 4th gear with the shift
lever in the S4 range.
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
No. 1 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
No. 1 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
temperature warning light blinks or a message is displayed in the combination meter.
HINT:
Refer to DTC P0712
.
AB60E AUTOMATIC TRANSMISSION: AUTOMATIC TRANSMIS...
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