FUEL SYSTEM 20 Wiring details (ECU & Sensor): Stand Alone Diagnosis: (At NTP conditions) By using Multimeter: Output voltage (between pin 1 & 2): Approx 0.5 VDC at 1 bar G Approx 3.6 VDC at 200 bar G Use TATA Diagnostic Tool & perform actuator test. REMOVAL OF H.P SENSOR FROM PRESSURE REGULATOR (On vehicle): NOTE Park the vehicle with brakes ON and duel selector switch is kept in CNG mode. Manually turn of the tank valve and connect the TML tester tool and start the service “Empty CNG lines” Crank the engine and run in idle condition until engine stop at its own. Re crank the engine it should not start (tank pressure should be 0 bar) WARNING : Do not turn OFF Cylinder Valves , in vehicle running in CNG mode. This may wrongly detect the leakage error. Disconnect. Battery negative cable. Disconnect Solenoid valve connection. Disconnect electrical connection of HP sensor Remove the HP sensor by using 27 metric. Wrench. RE-FITMENT OF H.P SENSOR ON PRESSURE REGULATOR (On vehicle): Before installing the sensor, always ensure good condition of the “O” ring. Refit the H.P sensor on pressure regulator. Tighten the H.P sensor to a torque of 50 + 5 Nm (Note: Apply torque only at the hexagonal area). Do a leak check after fitment.
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