Revotron 1.2T
145
Connector View :
Component Specification :
TMAP Sensor is used to measure the
temperature & pressure of the Intake Air at
Intake Manifold (Before Turbo). The piezo-
resistive pressure sensor element and a
suitable circuitry for signal amplification are
integrated on a silicon chip. The measured
pressure operates from above to the active
side of the silicon diaphragm. Temperature
sensor is a NTC Element. The manifold air
pressure sensor is mounted on intake
manifold plenum and the bolt tightened at
specified torque. The T-MAP sensor is a four
pin peizo-resistance semiconductor device
with a negative temperature coefficient. The
T-MAP sensor provides intake air pressure
and temperature details to ECU, which then
calculates the correct quantity of fuel to be
injected to each cylinder. A DC signal voltage
is produced by the sensor, which gets excited
due to varying manifold air pressure which is
felt on semiconductor diaphragm
Sensor Stand alone Diagnosis :
Use multimeter to check for signal voltage at
pin1 and pin3.
Supply voltage :- 5V DC.
Signal Voltage :
0.4 V at 10 kpa (absolute)
4.65 V at 115 kpa (absolute)
Connector details :
1. M2A2 : Ground
2. M1A2 : Temperature signal
3. M2E1 : Supply 5V
4. M2C1 : Pressure signal
Use TATA diagnostic tool to check for 'Intake
manifold pressure and Air temperature'
values.
1. Give 5V Power Supply to the Sensor
Supply pin and Ground to the Sensor
Ground Pin
2. Keep the sensor in a pressurized
environment of 50 bar.
3. Measure the Voltage between the Sensor
pressure Signal Pin and Ground, it should
be 2.1 Volts approx.
4. Check the resistance between the Sensor
Temperature signal pin and EMS ECU, at
Room temperature of 30
5. Degrees, it should be ~1080 Ohms.
