1.2L REVOTRON Bi FUEL CNG ENGINE 171 DIAGNOSTIC TROUBLESHOOTING If the tell-tale is ON in the Instrument Cluster, please check the following things: - 1. Please check that oil level in dip stick should be above minimum mark. If yes, got to step 2 or else top-up the engine oil and recheck the tell-tale status after engine restart. 2. Please check if there is any leakage of oil from oil pressure sensor. If yes, please tighten the oil pressure switch mounting bolt with 4 Kgfm. 3. Please check whether the oil pressure switch connector is not loose. 4. Electrical diagnosis - to be supported from AED team. 5. If still solved then please replace with new switch. Circuit Schematic Diagram : VIII. PRESSURE / TEMPERATURE SENSOR Component Details : PT sensor measures CNG pressure in low pressure line and mounted on the gas fuel rail. It consists of piezo-resistive elements whose resistance changes with pressure acting on the piezo electric element. It also measures temperature of CNG in gas fuel rail. Measured gas pressure & temperature is used for calculating gas mass flow rate. LOCATION Connector View:
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