APRILIA CAPONORD 1200 Service Station Manual page 142

Electrical system
0.7 - 0.9 Ω at ambient temperature
Pin out:
1. Power supply + Vbatt
2. Secondary circuit to ground
3. Activation from control unit
DIAGNOSTICS INSTRUMENT:PARAMETERS
Example value with key ON: Current ignition advance.
Example value with engine on: Indicates the cylinder advance where combustion will take place.
CAUTION
BEFORE CARRYING OUT ANY TROUBLESHOOTING, CAREFULLY READ THE GENERAL TROU-
BLESHOOTING CONCEPTS FOR ELECTRICAL DEVICES AT THE BEGINNING OF THE CHECK
AND CONTROL SECTION IN THE ELECTRICAL SYSTEM CHAPTER.
DIAGNOSTICS INSTRUMENT: ACTIVATION
Front Central Coil:
The auxiliary relay (No. 46 in the wiring diagram, placed in the front relay box, left side; CHECK, how-
ever, the identification of the relay with the colour of the cables) is energised for 5 seconds and the coil
Pink cable is closed to ground for 2 ms per second. Disconnect the 4-way connector of the fuel pump
to be able to hear the relay and injector activation. The continuity of the wiring is necessary for correct
activation: no error indications are displayed in case of lack of activation.
Rear Central Coil:
The auxiliary relay (No. 46 in the wiring diagram, placed in the front relay box, left side; CHECK, how-
ever, the identification of the relay with the colour of the cables) is energised for 5 seconds and the coil
Purple/Grey cable is closed to ground for 2 ms per second. Disconnect the 4-way connector of the fuel
pump to be able to hear the relay and injector activation. The continuity of the wiring is necessary for
correct activation: no error indications are displayed in case of lack of activation.
Front Side Coil:
The auxiliary injection relay (No. 46 in the wiring diagram, placed in the front relay box, left side; CHECK,
however, the identification of the relay with the colour of the cables) is energised for 5 seconds and the
coil Brown/Green cable is closed to ground for 2 ms per second. Disconnect the 4-way connector of
the fuel pump to be able to hear the relay and injector activation. The continuity of the wiring is necessary
for correct activation: no error indications are displayed in case of lack of activation.
Rear Side Coil:
The auxiliary injection relay (No. 46 in the wiring diagram, placed in the front relay box, left side; CHECK,
however, the identification of the relay with the colour of the cables) is energised for 5 seconds and the
coil Brown/White cable is closed to ground for 2 ms per second. Disconnect the 4-way connector of the
fuel pump to be able to hear the relay and injector activation. The continuity of the wiring is necessary
for correct activation: no error indications are displayed in case of lack of activation.
DIAGNOSTICS INSTRUMENT: LOGIC ERRORS
Front cylinder central coil P0351
ELE SYS - 142
CAPONORD 1200