APRILIA SHIVER 900 Service Station Manual page 160

Electrical system
1. + 12 V - Orange/Green colour, from the fuel
pump to the power supply
2. ground - Blue colour - Section 1.5
3. + 12 V (signal) reserve sensor - Green/Grey
colour - Section 0.5
4. reserve sensor ground, from PIN 4 to PIN 34
of the instrument panel - Blue/black colour -
Section 0.5
CAUTION
BEFORE CARRYING OUT ANY TROUBLESHOOTING,
CAREFULLY READ THE GENERAL TROUBLESHOOTING
CONCEPTS FOR ELECTRICAL DEVICES AT THE BEGIN-
NING OF THE CHECK AND CONTROL SECTION IN THE
ELECTRICAL SYSTEM CHAPTER.
DIAGNOSTIC TOOL: ACTIVATIONS
Fuel pump
NOTES: Energy is applied for 30 seconds to the secondary injection relay (35 in the electrical circuit
diagram, located in the filter housing, right side; however, CHECK the identification of the relay with the
colour of the cables). Electrical continuity is required in the wiring for the relay to activate correctly: no
errors are generated in case of no activation.
DIAGNOSTIC TOOL: ELECTRICAL ERRORS
Fuel pump relay command P0230
•
short circuit to positive/ open circuit, short circuit to negative
Error cause
•
Short-circuit to positive: excessive voltage has been detected at PIN 73 of the VEHICLE
connector. If open circuit, short circuit to negative: a voltage equal to zero was detected at
PIN 73 of the ENGINE connector.
Troubleshooting
•
Short-circuit to positive: check the relay electrical specifications are correct by disconnecting
it from the cable harness. If not OK, replace the relay; if OK, restore the cable harness
(Brown/Black cable).
•
If open circuit, short circuit to negative: check the relay electrical characteristics are correct
by disconnecting it from the cable harness; if it is not OK, replace the relay, if it is OK, check
relay connector, engine-vehicle cable harness connector and VEHICLE connector of the
Marelli control unit: if not OK, restore; if OK, check continuity of cable harness (Brown/Black
cable)
ELE SYS - 160
SHIVER 900