Description
The automatic transmission fluid (atf) temperature sensor converts the atf temperature into a resistance value which is input into the ecm.
The ecm applies a voltage to the temperature sensor through ecm terminal tho1.
The sensor resistance changes with the atf temperature.
One terminal of the sensor is grounded so that the sensor resistance and voltage decrease as the temperature becomes higher.
The ecm calculates the atf based on the voltage signal.
Monitor description
Atf temperature sensor converts atf temperature to 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 circuit. If the resistance value of the atf temperature is less than 79 ù*1 or more than 156 kù*2, the ecm interprets this as a fault in the atf sensor or wiring. The ecm will illuminate the mil and store the dtc.
Hint:
Monitor strategy
Typical enabling conditions
Typical malfunction thresholds
Component operating range
Wiring diagram
Inspection procedure
Hint:
Using the intelligent tester's data list allows switch, sensor, actuator and other item values to be read without removing any parts. Reading the data list early in troubleshooting is one way to save 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.
Hint:
Measure the resistance between terminal tho1 (tho) and the body ground.
Hint:
If a circuit related to the atf temperature sensor becomes open, p0713 is set in approximately 0.5 Seconds. It is not necessary to inspect the circuit when p0711 is set
Standard resistance
Hint:
If the resistance is out of the specified range of either of the atf temperatures shown in the table below, the driveability of the vehicle may decrease.
Standard resistance
Standard resistance
Replace ecm
Switch failure
Description
This dtc is output when the sliding roof drive gear (sliding roof ecu)
detects that the slide open or
tilt up switch in the overhead junction block is stuck for 30 seconds or more.
Wiring diagram
Refer to dtc b2341 (see page rf-11).
Inspection procedure
Read value of i ...
Engine compartment
Engine coolant reservoir
Engine oil filler cap
Battery
Brake fluid reservoir
Fuse box
Radiator
Condenser
Electric cooling fans
Engine oil level dipstick
Washer fluid tank
Engine oil
With the engine at operating temperature and turned off, check the oil
level on the dips ...
Circuit inspection
A description of the main areas of each circuit inspection
is below.
Item
Description
description
The major role, operation of the circuit and its component parts are
explained.
Dtc no., Dtc detection condition, trouble area
Indicates the diagnostic trouble cod ...