•
If no switching from high: is shown when the ratio control is in closed loop and when the
secondary air valve is not operating. The error is validated if the engine is in CUTOFF status
and the probe signal is close to 1V, or if the engine is in another operating condition that
requires the injection but the switching from the"HIGH RATIO" to "LOW RATIO" is missing
for a certain"adjusted" number of dead points (PMS or TDC).
•
If no switching from low: is shown when the ratio control is in closed loop and when the
secondary air valve is not operating. The error is validated if during the ratio control stage,
the switching from "HIGH RATIO" to "LOW RATIO" is missing for a certain"adjusted" number
of upper dead points (PMS or TDC).
The instrument panel indicates this error by lighting up in a fixed manner the MI warning light.
Troubleshooting:
•
If no switching from high: the fault may be generated in the supply system (poor pin sealing)
or in the probe. Check the wiring harness. if NOT OK restore; if OK, replace the lambda
probe.
•
If no switching from low: the fault may be generated in the supply system (dirty injector, low
fuel supply system pressure) or in the probe. Check the wiring harness. if NOT OK restore;
if OK, replace the lambda probe.
•
For the (non polarised) type of probes, this error may be caused also by a short circuit to
the wiring harness ground.
NOTE
THIS ERROR DISABLES THE RATIO CONTROL IN CLOSED LOOP.
(REAR CYLINDER BANK)
Function
In charge of telling the control unit whether the
mixture is lean or rich
Operation / Operating principle
The Marelli injection control unit reads and inter-
prets a voltage generated by the difference in oxy-
gen content between the exhaust fumes and the
ambient. It does not require an external supply
source but, in order to work properly, it should
reach a high operating temperature: that is why
there is a heating circuit inside
Level in electrical circuit diagram:
Lambda probe
Position:
Tuono V4 1100 Factory
Electrical system
ELE SYS - 197
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 ...