•
Short-circuit to positive: an excessive voltage was detected at PIN 44 of the ENGINE con-
nector.
•
If open circuit, short circuit to negative: a voltage equal to zero was detected at PIN 44 of
the ENGINE connector.
The instrument panel indicates this error by lighting up in a fixed manner the MI warning light.
Troubleshooting:
•
Short-circuit to positive: disconnect the probe connector and check the correct sensor re-
sistance: if NOT OK, replace the sensor, if OK, restore the wiring harness (Black/Violet
cable).
•
If open circuit, short circuit to negative: check the continuity from the probe connector (PIN
3 and 4) to the probe: if NOT OK, replace the probe; if ok, perform the check procedure for
the sensor connector and for the Marelli control unit connector:if NOT OK restore; if OK, with
the key ON and the sensor connector disconnected, check if there is battery voltage at PIN
4: if NOT OK, check the continuity of the Red//Brown cable between the probe connector
and the injection relay (no. 33 in the electrical circuit diagram, position under the saddle,
close to the battery positive; however, CHECK the relay identification with the cable colours);
if there are also errors regarding the coils, lower and upper injectors and secondary air,
check the relay and its energy and power line; if there is voltage at PIN 4, check ground
insulation of the Black/Violet cable (PIN 3): if NOT OK, restore the wiring harness; if OK,
check the continuity of the Black/Violet cable (between PIN 3 of the sensor connector and
ENGINE PIN 44) and restore the wiring harness.
WARNING
The control unit does not detect the following malfunctions of the lambda probe circuit relative
to the signal: interrupted circuit, short circuit to ground or malfunction of the sensor (for ex-
ample, voltage not variable). If the indication is abnormal, perform the troubleshooting indicated
below.
Troubleshooting
•
Check the continuity of the circuit from the probe connector (PIN 1 and PIN 2) towards the
probe: replace the lambda probe if there is no continuity; if there is continuity, check the
sensor connector and the Marelli control unit connector: if NOT OK, restore; if OK, check
the continuity between the ENGINE connector PIN 9 and PIN 38 and restore the wiring
harness.
DIAGNOSTIC TOOL: LOGIC ERRORS
P0154 Front bank lambda probe
Functional diagnosis:
•
no switching from high / no switching from low
Error cause:
Electrical system
Tuono V4 1100 Factory
ELE SYS - 196
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 ...