TIAGO TIGOR CNG - SERVICE MANUAL

1.2L REVOTRON Bi FUEL CNG ENGINE B ENGINE ASSEMBLY........................................................................................................................ 139 I ASSEMBLY OF CYLINDER BLOCK SUB-ASSEMBLIES .......................................................... 139 II ASSEMBLY OF PISTON AND CONNECTING ROD SUB-ASSEMBLIES.................................. 141 III ASSEMBLY OF CYLINDER HEAD SUB-ASSEMBLIES............................................................. 143 IV ASSEMBLY OF CYLINDER HEAD ............................................................................................. 145 V ASSEMBLY OF TIMING CHAIN.................................................................................................. 146 VI ASSEMBLY OF ACCESSORIES DRIVING BELT ...................................................................... 149 VII ASSEMBLY OF ENGINE SENSORS AND PERIPHERALS ....................................................... 151 VIII ASSEMBLY OF OIL SUMP .......................................................................................................... 152 IX ASSEMBLY OF EXHAUST MANIFOLD...................................................................................... 153 X ASSEMBLY OF INTAKE MANIFOLD .......................................................................................... 154 1.9. ENGINE MANAGEMENT SYSTEM .............................................................................................. 156 A ABBREVIATIONS ............................................................................................................................. 156 B AN OVERVIEW................................................................................................................................. 156 C ELECTRONIC CONTROL UNIT....................................................................................................... 157 D SENSORS…..................................................................................................................................... 162 I T-MAP SENSOR.......................................................................................................................... 163 II LAMBDA SENSOR ...................................................................................................................... 164 III CAMSHAFT POSITION SENSOR (INTAKE / EXHAUST) .......................................................... 166 IV KNOCK SENSOR ........................................................................................................................ 167 V CRANKSHAFT POSITION SENSOR .......................................................................................... 168 VI COOLANT TEMPERATURE SENSOR ....................................................................................... 169 VII OIL PRESSURE SWITCH ........................................................................................................... 170 VIII PRESSURE / TEMPERATURE SENSOR................................................................................... 171 IX CNG HIGH PRESSURE SENSOR (NON SERVICEABLE) ........................................................ 172 E ACTUATORS.. .................................................................................................................................. 173 I IGNITION COIL............................................................................................................................ 174 II PURGE CONTROL VALVE ......................................................................................................... 175