•
Measure the resistance value of the sensor at different temperatures between PIN 13 and
15.
•
Disconnect the sensor connector.
•
Verify continuity of the cabling between the sensor connector and the control unit connector:
Control unit PIN 13 - sensor PIN 2 and control unit PIN 15 - sensor PIN 1. Restore the cabling
if necessary.
•
If the cabling is intact but the sensor resistance value is incorrect, this means that the sensor
is faulty and must be replaced, otherwise proceed with the checks.
Shorted to positive:
•
With the sensor connector and the control unit disconnected, verify that the fault is shorted
with the battery positive of sensor connector PIN 2 (or control unit PIN 13) and restore the
cabling.
Shorted to negative:
•
Disconnect the sensor connector.
•
Check the sensor connector PIN 2 ground insulation.
•
If there is no ground insulation restore the cabling.
•
If PIN 2 is insulated from the ground and the error persists, this means that there is a probable
fault in the control unit.
Lambda sensor
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:
Right Lamb-
da probe
Location:
•
sensor: right exhaust pipe
Electrical system
NEVADA - NEVADA ANNIVERSARIO
ELE SYS - 88
Содержание nevada
Страница 1: ...SERVICE STATION MANUAL B043105 NEVADA NEVADA ANNIVERSARIO ...
Страница 6: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Страница 34: ...INDEX OF TOPICS SPECIAL TOOLS S TOOLS ...
Страница 37: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Страница 56: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Страница 108: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Страница 121: ...INDEX OF TOPICS ENGINE ENG ...
Страница 123: ...INDEX OF TOPICS POWER SUPPLY P SUPP ...
Страница 133: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Страница 152: ... Undo and remove the lower screw Suspensions NEVADA NEVADA ANNIVERSARIO SUSP 152 ...
Страница 153: ...INDEX OF TOPICS CHASSIS CHAS ...
Страница 181: ...INDEX OF TOPICS BODYWORK BODYW ...
Страница 193: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...