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ENGINE
172
3.TEMPERATURE AND MANIFOLD ABSOLUTE
PRESSURE SENSOR
(TMAP) (BOOST SEN-
SOR)
The TMAP sensor is fitted in the outlet of intercooler
and gives the temperature and pressure of the air
entering the intake manifold to the EMS ECU
The temperature sensor element is a NTC-resistor.
Fuel quantity and injection timing are optimized
based on these inputs.
LOCATION
This sensor is fitted on intercooler outlet near the
pipe connecting intercooler to engine intake.
TIGHTENING TORQUE
DESCRIPTION
TORQUE
Hex screw M4 x16 0.6 Kgfm
CONNECTOR DETAILS
PIN OUT DETAILS
PIN NO
DESCRIPTION
Pin 1
Boost air temperature return
Pin 2
Boost air temperature input
Pin 3
Boost pressure sensor supply
Pin 4
Boost pressure sensor input
REMOVAL
1. Lift the vehicle on two-post lift.
2. Disconnect the electrical connection from sen-
sor.
3. Remove one mounting Bolt of sensor and take
out the sensor from its location.
INSPECTION
With Ignition 'ON', check Voltage between Pin 4 and
Pin1 using multimeter.
0.4 V at 20 kPa (
abs
)
4.65 V at 270 kPa (
abs
)
RESITANCE VS TEMPERATURE CHART
Measure resistance between Pin no. 3 & 4 at vari-
ous temperature given in below table.
T [°C] Rnom [Ω]
Tolerance
Rmin [Ω]
Tolerance
Rmax [Ω]
-10
9202
8716
9689
0
5774
5497
6050
10
3714
3553
3875
20
2448
2353
2544