APRILIA MSS Mana GT ABS, Service Station Manual

Page: 47 / 394

Engine
The engine does not start
CAUTION
BEFORE CARRYING OUT ANY TROUBLESHOOTING, CAREFULLY READ THE GENERAL TROU-
BLESHOOTING CONCEPTS FOR ELECTRICAL DEVICES AT THE BEGINNING OF THE CHECK
AND CONTROL SECTION IN THE ELECTRICAL SYSTEM CHAPTER.
CAUTION
AXONE SHOULD BE WORKING PROPERLY AND UPGRADED TO THE 5.1.6 VERSION MINIMUM.
CAUTION
BEFORE ANY TROUBLESHOOTING, MAKE SURE THAT:
1) BATTERY VOLTAGE IS ABOVE 12V;
2) THE MAIN 30A FUSE IS NOT DAMAGED AND IS ADEQUATELY FITTED;
3) SECONDARY FUSES ARE NOT DAMAGED AND ARE ADEQUATELY FITTED.
NOTE
THE RELAY NUMBER SPECIFIED REFERS TO THE WIRING DIAGRAM. THE POSITION OF THE
RELAY ON THE VEHICLE IS INDICATED IN THE "ELECTRICAL SYSTEM/COMPONENT LAYOUT/
RELAY LAYOUT" CHAPTER.
•
1 - WITH THE KEY TURNED TO "ON", THE INSTRUMENT PANEL LIGHTS UP BUT NO
FAILURE INDICATION IS SHOWN.
•
2 - IS THE FUEL PUMP ACTIVATED?
YES, go to 3; NO, go to 7.
•
3 - DOES THE MOTOR TURN WHEN THE STARTER BUTTON IS PRESSED?
YES, go to 4; NO, go to 12.
•
4 - SEE THE "ELECTRICAL SYSTEM/ CHECKS AND CONTROLS/ ENGINE REVOLU-
TION SENSOR" CHAPTER: SEE THE WARNING RELATED TO THE TROUBLESHOOT-
ING AT THE END OF THE PARAGRAPH
•
5 - HAS THE MALFUNCTION BEEN IDENTIFIED?
YES, END; NO, go to 6.
•
6 - CHECK INJECTORS AND ENGINE FOR CORRECT MECHANICAL OPERATION,
CHECK FUEL CIRCUIT PRESSURE. IN CASE OF A FAULTY SECONDARY CIRCUIT OF
A COIL, THE ENGINE STARTS BUT WITH ONE CYLINDER - END
•
7 - CHECK THE FUEL PUMP CONNECTOR AND CHECK IF THERE IS CONTINUITY IN
THE RED/BROWN CABLE FROM THE CONNECTOR TO RELAY 29 (INJECTION LOAD)
AND ITS GROUND INSULATION: IS EVERYTHING OK?
YES, go to 8; NO, go to 11.
•
8 - IS THERE CONTINUITY BETWEEN THE BLUE/GREEN CABLE OF THE PUMP CON-
NECTOR AND THE GROUND CONNECTION?
YES, go to 10; NO, go to 9.
MSS Mana GT ABS
Troubleshooting
TROUBL - 47