ENGINE 172 3.TEMPERATURE AND MANIFOLD ABSOLUTE PRESSURE SENSOR (TMAP) (BOOST SENSOR) 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 sensor. 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 various 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
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