•
Disconnect the control unit connector and the sensor connector.
•
Verify that there is no short to battery positive on sensor connector PIN 1 (corresponding to
control unit connector PIN 11); if there is a short, restore the cabling.
•
Verify that there is no short to battery positive on sensor connector PIN 2 (corresponding to
control unit connector PIN 12); 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 11 - sensor PIN 1 and control unit PIN 12 - sensor PIN 2. 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 and the control unit connector.
•
Check the sensor connector PIN 1 ground insulation. In the absence of insulation restore
the cabling.
•
Check the sensor connector PIN 2 ground insulation. In the absence of insulation restore
the cabling.
•
If PIN 1 and PIN 2 are insulated from the ground and the error persists, this means that there
is a probable fault in the control unit.
Lambda probe heater P0141 -
shorted to positive / shorted to negative / open circuit.
Error cause
Short-circuit to positive: excessive voltage at PIN 35 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 31); 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 31 - 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:
V7 II ABS
Electrical system
ELE SYS - 115
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 ...