1.2L REVOTRON TWIN CYLINDER CNG ENGINE 206 Sensor Standalone Diagnosis : With ignition key is 'ON' position and supply voltage at 5V DC, use multi meter to measure the signal voltage at pin no. 2 and 3. Signal Volt = 0.68 V DC at idle position. Signal Volt = 4.25 ± 0.15V DC at wide open throttle (WOT) position. Use diagnostic tester to check throttle sensor by pressing and releasing the accelerator pedal. 1. Connect variable power supply to the Throttle Actuator DC Motor pins XX and XX. Give 5V power supply to Throttle Position Sensor supply pins xx, xx and connect ground to sensor ground pins xx, xx. 2. Vary the supply voltage from 0 to 5 Volts and check whether the Throttle plate is moving in counter clockwise direction. 3. Also measure the voltage at the Throttle position sensor signal pins xx, xx. These voltage signals should vary according to the graph shown in above snapshot. VI. CNG Fuel Injectors : Component Details : CNG Fuel injectors are normally closed solenoid valves which operate when the electromagnetic core is energized by ECU. Based on engine operating conditions, ECU adjusts injection pulse widths to inject precise amount of fuel required. Component Location : CNG Injector Properties Operating Pressure – 4 bar (Gauge) Operating Temperature Range – - 40 Deg C to 125 Deg C Connector View : Connector Details: Connector Description 1 Supply 2 Ground
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