
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:
Oxygen sensor
Location:
•
on the vehicle: left side of the vehicle
•
connector: on the right of the pinion
cover (4-ways black connector)
Electrical specifications
•
Heater circuit: 7-9
Ω
at Ambient temp.
Pin out:
1. Sensor (black wire)
2. Sensor signal - (grey wire)
3. Heater ground connection (white cable)
4. Heater power supply (white cable)
DIAGNOSIS INSTRUMENT:
PARAMETERS
Oxygen sensor
•
Example value with key ON: 0 mV
•
Example value with engine on:
100--900 mV
If there is a short circuit at + 5 V or above, the oxy-
gen sensor parameter is not equal to the value
read by the control unit; a recovery value is dis-
played instead
Lambda correction
•
Example value with key ON: 1.00 mV
RSV4 Factory a-PRC
Electrical system
ELE SYS - 185
Summary of Contents for RSV4 Factory a-PRC 2009
Page 1: ...SERVICE STATION MANUAL 898952 RSV4 Factory a PRC ...
Page 4: ......
Page 6: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Page 52: ...INDEX OF TOPICS SPECIAL TOOLS S TOOLS ...
Page 60: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Page 84: ...INDEX OF TOPICS TROUBLESHOOTING TROUBL ...
Page 94: ... 7 REPLACE THE STARTER BUTTON COMPONENT END Troubleshooting RSV4 Factory a PRC TROUBL 94 ...
Page 95: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Page 249: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Page 270: ...INDEX OF TOPICS ENGINE ENG ...
Page 387: ...INDEX OF TOPICS POWER SUPPLY P SUPP ...
Page 398: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Page 436: ...INDEX OF TOPICS CHASSIS CHAS ...
Page 460: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Page 472: ...INDEX OF TOPICS COOLING SYSTEM COOL SYS ...
Page 483: ...INDEX OF TOPICS BODYWORK BODYW ...