Error cause
Short-circuit to positive: excessive voltage at PIN 2 of the control unit connector.
Short-circuit to negative: lack of insulation from ground on the sensor connector PIN 4.
Open circuit: circuit interruption.
Troubleshooting
Short-circuit to positive:
•
Disconnect the control unit connector and the sensor connector.
•
Verify that there is no short to battery positive on sensor connector PIN 3 (corresponding to
control unit connector PIN 2); if there is a short, restore the cabling.
Open circuit:
•
Disconnect the control unit connector and the sensor connector.
•
Verify continuity of the cabling between the sensor connector and the control unit connector:
Control unit PIN 2 - sensor PIN 3. If necessary, restore the cable harness.
•
Verify continuity of the cabling between the sensor connector and the injection relay: sensor
PIN 4 - injection relay PIN 3. If necessary, restore the cable harness.
•
If the cabling is intact and the error persists, proceed with the following checks.
Short-circuit to negative:
•
Disconnect the sensor connector.
•
Check the sensor connector PIN 3 ground insulation. In the absence of insulation restore
the cabling.
•
If PIN 3 is insulated from ground and in the absence of other errors (fuel pump, injector, coil),
this means that the control unit is most likely faulty.
LEFT LAMBDA
Level in electrical circuit diagram:
Left lambda
probe
Location:
•
sensor: right exhaust pipe
•
connector: adjacent to the filter box, left
side
Electrical specifications:
Heater circuit: 12 -14
Ω
at 20 °C (68 °F)
Pin-out:
1. Sensor (pink wire)
2. Sensor signal - (green/white wire)
3. Heater ground (violet/white)
4. Heater power (red/brown cable)
V7 II ABS
Electrical system
ELE SYS - 109
Summary of Contents for V7 II ABS
Page 1: ...SERVICE STATION MANUAL 2Q000105 V7 II ABS ...
Page 4: ......
Page 6: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Page 44: ...INDEX OF TOPICS SPECIAL TOOLS S TOOLS ...
Page 47: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Page 69: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Page 132: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Page 146: ...INDEX OF TOPICS ENGINE ENG ...
Page 148: ...INDEX OF TOPICS POWER SUPPLY P SUPP ...
Page 158: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Page 173: ...V7 II ABS Suspensions SUSP 173 ...
Page 179: ...INDEX OF TOPICS CHASSIS CHAS ...
Page 220: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Page 253: ...INDEX OF TOPICS BODYWORK BODYW ...
Page 270: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...
Page 278: ... Place the two seat saddle Pre delivery V7 II ABS PRE DE 278 ...