Yamaha tmax XP500A, Service Manual

Page: 464 / 559

7 - 19
FI
FUEL INJECTION SYSTEM
Fault code No. 30 Symptom The scooter has overturned.
Used diagnostic code No. 08 (lean angle cut-off switch)
Order Inspection operation item and
probable cause Operation item and countermeasure Reinstatement
method
1 Defective lean angle cut-off switch 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.
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?
Reinstated by turn-
ing the main switch
ON (however, the
engine cannot be
restarted unless
the main switch is
first turned OFF).
2 The scooter has overturned. Raise the scooter upright.
3 Installed condition of the lean
angle cut-off switch Check the installed area for looseness or pinching.
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.
Lean angle cut-off switch coupler
Main wiring harness ECU (engine) coupler
Fault code No. 33 Symptom Malfunction detected in the primary lead of the ignition coil.
Used diagnostic code No. 30 (ignition coil)
Order Inspection operation item and
probable cause Operation item and countermeasure Reinstatement
method
1 Defective ignition coil (test the pri-
mary and secondary coils for conti-
nuity) Replace if defective.
Refer to “IGNITION SYSTEM” in chapter 8. 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.
2 Open or short circuit in lead. 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
3 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.
Ignition coil primary side coupler – orange
Main wiring harness ECU (engine) coupler
Positive tester probe
→
blue
1
Negative tester probe
→
yellow/green
2