Engine Coolant Temperature Sensor (ECTS) is located in the
engine coolant passage of the cylinder head for detecting the engine
coolant temperature. The ECTS uses a thermistor whose resistance changes
with the temperature.
The electrical resistance of the ECTS decreases as the
temperature increases, and increases as the temperature decreases. The
reference +5V is supplied to the ECTS via a resistor in the ECM. That
is, the resistor in the ECM and the thermistor in the ECTS are connected
in series. When the resistance value of the thermistor in the ECTS
changes according to the engine coolant temperature, the output voltage
also changes.ion duration and controls the ignition timing using the
information of engine coolant temperature to avoid engine stalling and
improve drivability.
During cold engine operation, the ECM increases the fuel
injection duration and controls the ignition timing using the
information of engine coolant temperature to avoid engine stalling and
improve drivability.
Inspection
1.
Connect the GDS on the Data Link Connector (DLC).
2.
Measure the output voltage of the MAPS at idle and IG ON.
ConditionOutput Voltage (V)IG ONApprox. 4.44VIdleApprox. 0.75V
...
Removal
1.
Remove the air duct (A).
2.
Disconnect the battery (-) terminal (A)and then (+) terminal (B).
3.
Remove the battery mounting bracket (D) and the insulation pad (C), and then remove the battery (E).
4.
Disconnect the front connector mounting clip (A).
5.
Remove the batt ...
Reverse Parking Collision-Avoidance
Assist may not assist braking or alert
the driver under the following conditions
even if there are pedestrians or
objects.
Any non-factory equipment or
accessories have been installed.
The condition of the vehicle is
unstable due to an accident ...