Yamaha RST90GTZ, Руководство по обслуживанию

Страница: 354 / 504

FI
7-27
Fault code No. 43 Symptom Power supply to the fuel injectors and fuel pump is not normal.
Diagnostic code No. d:09 (fuel system voltage)
Order
Item/components and probable cause Check or maintenance job Reinstate-
ment method
1
Connections
• Fuel injection system relay coupler
• Wire harness ECU coupler Check the couplers for any pins that may have
pulled out.
Check the locking condition of the couplers.
If there is a malfunction, repair it and connect the
coupler securely. Setting the
engine stop
switch to
“RUN” and
turning the
main switch
on.
2
Open or short circuit in wire harness. Repair or replace if there is an open or short circuit.
Between the fuel injection system relay coupler and
ECU coupler.
Blue/Red – Blue/Red
Between the fuel injection system relay coupler and
engine stop switch coupler.
Red/White – Red/White
Between the engine stop switch coupler and main
switch coupler.
Brown – Brown
3
Malfunction or open circuit in fuel injection
system relay. Execute the diagnostic mode (code No. d:09).
Replace if defective.
TIP
• Refer to diagnostic mode (code No. d:50).
• When the leads are disconnected, the voltage
check by the code No. d:09 is impossible.
1. Disconnect the fuel injection system relay from
the wire harness and remove it.
2. Connect the pocket tester (
Ω ×
1) and battery
(12 V) to the fuel injection system relay terminals
as shown.
3. Does the fuel injection system relay have conti-
nuity between the red/green and red/blue termi-
nals?
4 Malfunction in ECU. Replace the ECU.
Positive battery terminal
→
Red/White
Negative battery terminal
→
Blue/Red
Positive tester probe
→
Red/Green
Negative tester probe
→
Red/Blue
FUEL INJECTION SYSTEM