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PANEL ERRORS" SECTION. IF THERE ARE ERRORS PRESENT, SOLVE THE FAULT

AND SELECT "CLEAR ERRORS"; IF THERE ARE NO ERRORS PRESENT, go to 12

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12 - IN THE "ENGINE PARAMETER READING" SCREEN PAGE, DOES THE "AIR TEM-

PERATURE" PARAMETER INDICATE A VALUE EQUIVALENT TO ROOM TEMPERA-

TURE?

YES, go to 13; NO, note A

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13 - IN THE "ENGINE PARAMETER READING" SCREEN PAGE, DOES THE ENGINE

TEMPERATURE PARAMETER WITH COLD ENGINE INDICATE A VALUE SIMILAR TO

THAT OF THE AIR TEMPERATURE PARAMETER? AFTER STARTING THE ENGINE,

DOES THE PARAMETER INCREASE GRADUALLY INDICATING A CORRECT VALUE?

YES, go to 14; NO, note B

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14 - IN THE "ENGINE PARAMETER READING" AND THE "LAMBDA CORRECTION"

SCREEN PAGES, WITH ENGINE AT IDLE AND ENGINE TEMPERATURE AT > 65°C,

DOES THE VALUE VARY WITHIN THE 0.85 - 1.15 RANGE?

YES, go to 15; NO, note C

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15 - IN THE "ENGINE PARAMETER READING" WITH ENGINE AT IDLE AND ENGINE

TEMPERATURE >65°c, "FRONT THROTTLE CORRECTION" OR "REAR THROTTLE

CORRECTION", WITH ENGINE AT IDLE, ARE THE PARAMETERS INCLUDED WITHIN

(-0.8° - +0.8°) INTERVAL? AND IN THE SAME SCREEN PAGE, ARE THE "FRONT

THROT., POT. 1 (DEGREES)" AND " "REAR THROT., POT. 1 (DEGREES)", WITH EN-

GINE AT IDLE, > OR = A 0.5°? CAUTION: THE DIFFERENCE OF THE THROTTLE

CORRECTION VALUES BETWEEN THE REAR AND FRONT CYLINDER MUST NOT BE

>1°

YES, go to 16; NO, note D

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16 - CHECK: ENGINE SPEED SENSOR, FUEL PRESSURE, INJECTORS (MECHANICAL

OPERATION), COILS (SPARK), ENGINE MECHANICS - END

Note A: SEE THE CHAPTER TITLED " ELECTRICAL SYSTEM/CHECKS AND INSPECTIONS/AIR

TEMPERATURE SENSOR".

Note B: SEE THE CHAPTER TITLED " ELECTRICAL SYSTEM/CHECKS AND INSPECTIONS/EN-

GINE TEMPERATURE SENSOR".

Note C: SEE THE CHAPTER TITLED " ELECTRICAL SYSTEM/CHECKS AND INSPECTIONS/

LAMBDA PROBE".

Note D: SEE THE CHAPTER TITLED " ELECTRICAL SYSTEM/CHECKS AND INSPECTIONS/

THROTTLE BODY".

APRILIA TUONO V4 R a-PRC ABS User Manual

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