193 / 1002
1.2L REVOTRON ENGINE
156
Connector View :
Connector Details:
Connector
Description
1
Coolant Temp Signal
2
Ground
Component Specification :
The engine coolant temperature sensor measures
the temperature of the engine coolant. Coolant
temperature sensor is a Negative Temperature
Coefficient type Sensor. The sensing element,
together with the resistance network in the Engine
Management System (EMS) module, provides a
signal proportional to the coolant temperature to
the EMS module. A reference voltage is provided
to the sensor/network by the module.
The water temperature sensor, 16TT provides
water temperature input to ECU when placed in
water stream. The 16TT has negative
temperature coefficient with a 2 pin connector, is
a semiconductor material which changes
resistance depending on the surrounding
temperature. The resistance decreases as
temperature increases. Water temperature sensor
is mounted on cylinder head (before thermostat),
which is in contact with the engine coolant and
tightened to a specified torque
Sensor Stand alone Diagnosis :
Use multimeter to check for coil resistance across
pin 1 and pin 2, which should be between 2500_
at 200C and 833.9_ at 500C.
1. ECU M1D4 :- -ve
2. ECU M1E4 :- +ve
Use TATA diagnosis tool to check for 'Water
Temp' values.
Measure the temperature between the Sensor
terminals. At room temperature of 35 degrees, the
resistance shall be 1763 Ohms.
v.