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FI
FUEL INJECTION SYSTEM
Fault code No.
43
Symptom
The ECU (engine) is unable to monitor the battery voltage.
Used diagnostic code No. 09 (fuel system voltage)
Order
Inspection operation item and
probable cause
Operation item and countermeasure
Reinstatement
method
1
Malfunction in ECU (engine)
Fuel injection system relay is on.
Reinstated by
starting the engine
and operating it at
idle.
2
Open or short circuit in the wiring
harness.
Repair or replace if there is an open or short circuit.
Between starting circuit cut-off relay (fuel injection
system relay), fuel pump, fuel injector (#1, #2)
red/blue – red/blue
3
Malfunction or open circuit in fuel
injection system relay
Replace if defective.
1. Disconnect the fuel injection system relay from
the wire harness.
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 red/blue and red/blue?
4
Connected condition of connector
Inspect the coupler for any pins
that may have pulled out.
Check the locking condition of the
coupler.
If there is a malfunction, repair it and connect it
securely.
Fuel injection system relay coupler
ECU (engine) coupler
Positive battery terminal
→
red/black
1
Negative battery terminal
→
blue/yellow
2
Positive tester probe
→
red/blue
3
Negative tester probe
→
red/blue
4
2
1
3
4
R/L
R/L
R/B
L/Y
R
/
L
R
/
L
R
/
B
L
/
Y
Summary of Contents for tmax XP500A
Page 1: ...2005 XP500 XP500A5VU5 AE1 SERVICE MANUAL ...
Page 2: ......
Page 8: ......
Page 9: ...GEN INFO 1 ...
Page 11: ...GEN INFO ...
Page 38: ...SPEC 2 ...
Page 40: ...SPEC ...
Page 68: ...2 28 SPEC OIL FLOW DIAGRAMS 1 Oil strainer 2 Crankshaft ...
Page 69: ...2 29 SPEC OIL FLOW DIAGRAMS 1 Clutch 2 Right main journal bearing 3 Main gallery plug ...
Page 118: ......
Page 119: ...CHK ADJ 3 ...
Page 193: ......
Page 194: ...CHAS 4 ...
Page 198: ...CHAS ...
Page 292: ...4 94 CHAS ANTI LOCK BRAKE SYSTEM XP500A ...
Page 326: ......
Page 327: ...ENG 5 ...
Page 331: ...ENG ...
Page 424: ...COOL 6 ...
Page 426: ...COOL ...
Page 442: ......
Page 443: ...FI 7 ...
Page 445: ...FI ...
Page 476: ...ELEC 8 ...
Page 544: ......
Page 545: ...TRBL SHTG 9 ...
Page 553: ......
Page 556: ......
Page 557: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN ...