Yamaha XP500 Service Manual page 464

Fault code No. 30
Used diagnostic code No. 08 (lean angle cut-off switch)
Order Inspection operation item and
probable cause
1 Defective lean angle cut-off switch
2 The scooter has overturned.
3 Installed condition of the lean
angle cut-off switch
4 Connected condition of connector
Inspect the coupler for any pins
that may have pulled out.
Check the locking condition of the
coupler.
Fault code No. 33
Used diagnostic code No. 30 (ignition coil)
Order Inspection operation item and
probable cause
1 Defective ignition coil (test the pri-
mary and secondary coils for conti-
nuity)
2 Open or short circuit in lead.
3 Connected condition of connector
Inspect the coupler for any pins
that may have pulled out.
Check the locking condition of the
coupler.
FUEL INJECTION SYSTEM
Symptom The scooter has overturned.
Operation item and countermeasure
Replace if defective.
1. Remove the lean angle cut-off switch from the
scooter.
2. Connect the lean angle cut-off switch coupler to
the wire harness.
3. Connect the pocket tester (DC 20 V) to the lean
angle cut-off switch coupler as shown.
Positive tester probe → blue 1
Negative tester probe → yellow/green 2
4. When turn the lean angle cut-off switch approx.
45°, the voltage reading change from 0.9 V to
4.1 V.
5. Is the emergency stop switch OK?
Raise the scooter upright.
Check the installed area for looseness or pinching.
If there is a malfunction, repair it and connect it
securely.
Lean angle cut-off switch coupler
Main wiring harness ECU (engine) coupler
Symptom Malfunction detected in the primary lead of the ignition coil.
Operation item and countermeasure
Replace if defective.
Refer to "IGNITION SYSTEM" in chapter 8.
Repair or replace if there is an open or short circuit.
Between ignition coil coupler and ECU (engine) cou-
pler/ main harness
orange – orange
red/black – red/black
If there is a malfunction, repair it and connect it
securely.
Ignition coil primary side coupler – orange
Main wiring harness ECU (engine) coupler
7 - 19
FI
Reinstatement
method
Reinstated by turn-
ing the main switch
ON (however, the
engine cannot be
restarted unless
the main switch is
first turned OFF).
Reinstatement
method
Reinstated by
starting the engine
and operating it at
idle.
In case of multiple
cylinder open or
short circuit in lead,
make sure to turn
ON and OFF the
main switch after
each time of crank-
ing.