Self-Diagnosis - Yamaha XVS250 2001 Service Manual

SELF-DIAGNOSIS

The XVS125 features self-diagnosis.
When the main switch is turned to "ON", the following items are monitored and the condition codes are
displayed on the engine indicator light (irrespective of whether the engine is running or not).
NOTE:
The XVS125 features a self-diagnosing system.
In the XVS125, when the main switch is turned on the "Engine indicator light" in the speedometer
comes on for 1.4 seconds then goes off. However, if there is a malfunction, it comes on for 1.4 seconds,
goes off and then begins flashing. (However, it is on while the engine is running.)
Item
Throttle position
sensor (TPS)
Speed sensor
(5JX2)
Display order on the engine indicator light
Light on
Light off
1
Condition
D Enables the motorcycle to run
Disconnected
Short-circuit so that the ignition timing is
Locked fixed when the throttle is fully
opened.
D Displays the condition code
on the engine indicator light.
D Displays the condition code
Disconnected
short-circuit on the enigne indicator light.
Missing coupler
Failure in the
electronic
component
2
3
SELF-DIAGNOSIS
Response
(Example: for throttle position sensor trouble)
1 Light on (seconds)
2 Light off (seconds)
3 Number of blinks . . . . . .
4 Light off (seconds)
4
7-41
ELEC
Display condition
code
When
engine is
stationary
Blinks in Light on
Fault code: 3
Blinks in Light on
Fault code: 4
. . . . . 0.5 seconds
. . . . . 0.5 seconds
Fault code
. . . . . 3 seconds
Repetition
When
engine is
running