DESCRIPTION
The No. 2 ATF temperature sensor is installed in the transmission valve body assembly.
If the ECM detects an abnormally high ATF temperature near this sensor, it illuminates the warning indicator.
HINT:
The temperature of ATF easily rises when towing, climbing hills, in traffic, etc.
DTC Code |
DTC Detection Condition |
Trouble Area |
SAE |
---|---|---|---|
P274015 |
The output voltage from the No. 2 ATF temperature sensor is higher than 4.915 V for 0.5 seconds or more and either condition is met (1 trip detection logic): (A) 15 minutes 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 seconds 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). |
|
P2743 |
MONITOR DESCRIPTION
The No. 2 ATF temperature sensor converts the ATF temperature to an electrical resistance value. Based on the resistance, the ECM determines the ATF temperature and detects an open or short in the No. 2 ATF temperature sensor circuit. If the resistance value of the No. 2 ATF temperature sensor is higher than 156 kΩ*, the ECM interprets this as a fault in the No. 2 ATF temperature sensor or wiring. The ECM stores the DTC.
*: -40°C (-40°F) is indicated regardless of the actual ATF temperature.
HINT:
The ATF temperature can be checked on the Techstream display.
WIRING DIAGRAM
Refer to DTC P071011 (See page ).
CAUTION / NOTICE / HINT
NOTICE:
HINT:
After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.
1. DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.
NOTICE:
In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.
(a) Warm up the engine.
(b) Turn the ignition switch off.
(c) Connect the Techstream to the DLC3.
(d) Turn the ignition switch ON.
(e) Turn the Techstream on.
(f) Enter the following menus: Powertrain / Transmission / Data List.
(g) According to the display on the Techstream, read the Data List.
Transmission
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
A/T Oil Temperature No. 2 |
No. 2 ATF temperature sensor value/ Min.: -40°C (-40°F) Max.: 150°C (302°F) |
|
If the value -40°C (-40°F) or 150°C (302°F), No. 2 ATF temperature sensor circuit is open or shorted. |
HINT:
Check the temperature displayed on the Techstream in order to check if a malfunction exists.
Temperature Displayed |
Malfunction |
---|---|
-40°C (-40°F) |
Open circuit |
150°C (302°F) or higher |
Short circuit |
PROCEDURE
1. |
INSPECT NO. 2 ATF TEMPERATURE SENSOR (TRANSMISSION WIRE) |
(a) Disconnect the E1 transmission wire connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
5 (OT2+) - 6 (OT2-) |
Always |
25 Ω to 156 kΩ |
5 (OT2+) - Body ground |
Always |
10 kΩ or higher |
6 (OT2-) - Body ground |
Always |
10 kΩ or higher |
HINT:
If the resistance is out of the specified range at any of the ATF temperatures shown in the table below, the driveability of the vehicle may decrease.
ATF Temperature |
Specified Condition |
10°C (50°F) |
5 to 8 kΩ |
25°C (77°F) |
2.5 to 4.5 kΩ |
110°C (230°F) |
0.22 to 0.28 kΩ |
*a |
Component without harness connected (Transmission Wire) |
NG | ![]() |
REPLACE NO. 2 ATF TEMPERATURE SENSOR (TRANSMISSION WIRE) |
|
2. |
CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM) |
(a) Disconnect the ECM connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
E10-34 (THO2) - E9-23 (ETHW) |
Always |
25 Ω to 156 kΩ |
*a |
Rear view of wire harness connector (to ECM) |
OK | ![]() |
REPLACE ECM |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
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FAIL-SAFE CHART
HINT:
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