connector of the throttle body and the control unit connector and check cable continuity; if
there is no continuity, restore the cable harness. If there is continuity, with the throttle body
connector connected, check that the resistance, from the throttle control unit connector,
between PIN 3 and 15 is within 1 and 2.5 Ohm; if not ok replace the throttle body, if ok check
that the throttle body is not mechanically blocked: if blocked, remove the cause or replace
the body, if not blocked replace the control unit
DIAGNOSTIC TOOL: LOGIC ERRORS
Rear bank throttle valve position potentiometer sensor P0121
•
Signal not plausible
Error cause
•
Signal outside the specified value determined based on the values of the intake pressure
Troubleshooting
•
Check the parameter of the Potentiometer 1 front Throttle (voltage) to get which signal the
control unit receives and to compare it to the Potentiometer 1 rear Throttle (voltage). Check
the throttle body connector and the control unit connector. Check that cable resistance be-
tween the throttle body connector (PIN 1) and the control unit (PIN48) is a few tenths of an
Ohm. Otherwise, restore the wiring harness if ok replace the complete throttle body
Rear throttle valve potentiometer CF2 P2121
•
Signal not plausible
Error cause
•
Signal outside the specified value determined based on the values of the intake pressure
Troubleshooting
•
Check the parameter of the Potentiometer 2 front Throttle (voltage) to get which signal the
control unit receives and to compare it to the Potentiometer 2 rear Throttle (voltage). Check
the throttle body connector and the control unit connector. Check that the resistance of the
cable between the throttle body connector (PIN 4) and the control unit (PIN 50) is a few
tenths of ohm. Otherwise, restore the wiring harness if ok replace the complete throttle body
Throttle valve position potentiometers P2135
•
Signal not congruent
Error cause
•
Potentiometer 1 and potentiometer 2 do not provide a congruent value: the sum of the two
voltages must be constant. The cause could be the malfunction of one of the two sensors
or an abnormal resistance in one of the two circuits
Troubleshooting
Electrical system
Tuono V4 1100 Factory
ELE SYS - 218
Summary of Contents for 2Q000504
Page 1: ...SERVICE STATION MANUAL 2Q000504 Tuono V4 1100 Factory ...
Page 4: ......
Page 6: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...
Page 12: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Page 55: ...INDEX OF TOPICS SPECIAL TOOLS S TOOLS ...
Page 63: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Page 103: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Page 270: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Page 299: ...INDEX OF TOPICS ENGINE ENG ...
Page 415: ...INDEX OF TOPICS POWER SUPPLY P SUPP ...
Page 425: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Page 463: ...INDEX OF TOPICS CHASSIS CHAS ...
Page 508: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Page 548: ...INDEX OF TOPICS COOLING SYSTEM COOL SYS ...
Page 561: ...INDEX OF TOPICS BODYWORK BODYW ...