APRILIA RSV4 Factory Service Station Manual page 174

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Electrical system

cable (PIN 3): if not OK, restore the cable harness. If it is OK, check the continuity of the

green cable (between the sensor connector PIN 3 and the ENGINE PIN 32) and restore the

cable harness.

The control unit does not detects the following malfunctions of the lambda probe circuit according to

the signal: interrupted circuit, shorted to ground or sensor malfunction (for example non variable volt-

age). In case of fault indication, carry out the following troubleshooting.

Troubleshooting

Check circuit continuity from probe connector (PIN 1 and PIN 2) toward 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 continuity between

the ENGINE connector PIN 22 and PIN 10 and restore the cable harness.

Lower injectors key:

1. Lower injector 1

2. Lower injector 3

3. Lower injector 2

4. Lower injector 4

ELE SYS - 174

RSV4 Factory