[C-5] Diagnosis By The Malfunction Code - Yamaha YP250A 1999 Supplementary Service Manual

[C-5] DIAGNOSIS BY THE MALFUNCTION CODE

Malfunction codes explained in [B-4] and [B-5] are used to judge what type of problems have occurred. They
are judged by using the table as follows.
NOTE:
Records all indicated malfunction codes and check the contents for confirmation.
Malfunc-
tion code
Front wheel sensor signal does not
11
come in correctly.
1
*
Rear wheel sensor signal does not
come in correctly.
12
Error signal is detected by the front "13"
13 / 14 or rear "14" wheel sensor.
No continuity in sensor circuits
15 / 16
Solenoid circuit is disconnected or
21 short-circuited.
Disconnection is detected on the
31 system of fail-safe relay and solenoid.
Defective operation of the fail-safe
32 relay is detected.
Defective operation of the motor is
detected.
33
(Motor stops and will not rotate.)
Defective operation of the motor is
34 detected.
(Motor keeps running and will not stop.)
ANTI-LOCK BRAKE SYSTEM (ABS)
Problem Check point
S Installation of the front wheel sensor
S Front wheel sensor lead, connector
S ABS harness circuit
S Front sensor housing
S Installation of the rear wheel sensor
S Rear wheel sensor lead, connector
S ABS harness circuit
S Rear sensor housing
S Installation of sensors
S Sensor housings
S Sensor rotors
S Continuity of sensors
S ABS harness circuit
S Connection of sensor connectors
S ABS harness circuit
S Connector of solenoid
S Solenoid
S ABS harness circuit
S Fail-safe relay circuit
S Connector of solenoid
S Fail-safe relay
S ABS harness circuit
S ABS harness circuit
S Connector of motor
S Fail-safe relay
S HU motor circuit
S Fail-safe relay
S ABS harness circuit
S HU motor circuit
50
CHAS
Reference
[C-5-1] and
the electricity
group
[C-5-2] and
the electricity
group
[C-5-3]
[C-5-4]
[C-5-5] and
the electricity
group
[C-5-6]
[C-5-7] and
the electricity
group
[C-5-8] and
the electricity
group
[C-5-9] and
the electricity
group