•
Short-circuit to positive: see that the parameter of the rear cylinders air Pressure Sensor on
the diagnostic tool reads approx. 1,200 mbar; disconnect the sensor connector: if the value
does not change, this means there is a short circuit in the cable between the control unit
connector and the sensor connector, restore the wiring harness; if the value changes, re-
place the sensor.
•
If open circuit, short circuit to negative: check the Marelli control unit connector and the
sensor connector; if not ok restore, if everything is OK, with key OFF, check the continuity
between Marelli control unit connector PIN 24 and sensor connector PIN 3: if there is no
continuity, restore the wiring harness, if there is continuity, check the ground insulation of
the cable: if there is continuity to ground, restore the wiring harness, if there is no continuity,
check (with key in ON position) that there is a voltage of approx. 5 V present at PIN 1 on the
sensor connector: if not ok turn the key to OFF and check continuity between ENGINE
connector PIN 25 and PIN 1 on the sensor connector: if not OK, restore the wiring harness;
if OK, replace the control unit; if a voltage of 5 V is present at PIN 1, check (with key in ON
position) for continuity between PIN 3 on the sensor connector and ground: if not OK, restore
the wiring harness; if OK, replace the sensor.
Front bank air pressure sensor P1105
•
short circuit to positive / open circuit, short circuit to negative, signal not plausible.
Error cause
•
Short-circuit to positive: excessive voltage has been detected on PIN 49. If open circuit, short
circuit to negative: voltage equal to zero detected at PIN 49.
Troubleshooting
•
Short-circuit to positive: check on the diagnostic tool if the parameter of the rear cylinders
air Pressure Sensor reads approx. 1,200 mbar; disconnect the sensor connector: if the value
does not change, this means there is a short circuit in the cable between the control unit
connector and the sensor connector, restore the wiring harness; if the value changes, re-
place the sensor.
•
If open circuit, short circuit to negative: check the Marelli control unit connector and the
sensor connector; if not ok restore, if everything is OK, with key OFF, check the continuity
between Marelli control unit connector PIN 49 and sensor connector PIN 3: if there is no
continuity, restore the wiring harness, if there is continuity, check the ground insulation of
the cable: if there is continuity to ground, restore the wiring harness, if there is no continuity,
check (with key in ON position) that there is a voltage of approx. 5 V present at PIN 1 on the
sensor connector: if not ok turn the key to OFF and check continuity between ENGINE
connector PIN 25 and PIN 1 on the sensor connector: if not OK, restore the wiring harness;
if OK, replace the control unit; if a voltage of 5 V is present at PIN 1, check (with key in ON
Electrical system
Tuono V4 1100 Factory
ELE SYS - 186
Содержание 2Q000504
Страница 1: ...SERVICE STATION MANUAL 2Q000504 Tuono V4 1100 Factory ...
Страница 4: ......
Страница 6: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...
Страница 12: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Страница 55: ...INDEX OF TOPICS SPECIAL TOOLS S TOOLS ...
Страница 63: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Страница 103: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Страница 270: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Страница 299: ...INDEX OF TOPICS ENGINE ENG ...
Страница 415: ...INDEX OF TOPICS POWER SUPPLY P SUPP ...
Страница 425: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Страница 463: ...INDEX OF TOPICS CHASSIS CHAS ...
Страница 493: ... Remove the lateral screw Remove the upper screw Remove the chain slider shoe Tuono V4 1100 Factory Chassis CHAS 493 ...
Страница 508: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Страница 510: ...Operating diagram ABS functional diagram key Braking system Tuono V4 1100 Factory BRAK SYS 510 ...
Страница 548: ...INDEX OF TOPICS COOLING SYSTEM COOL SYS ...
Страница 561: ...INDEX OF TOPICS BODYWORK BODYW ...