Yamaha BT1100 2002 Service Manual page 343

EASB0043
SELF-DIAGNOSIS
This model is equipped with a self-diagnosis device for the following electrical circuits:
- tachometer
- speedometer
- oil level warning light
- fuel level warning light
- throttle position sensor
- speed sensor.
When the key is turned to "ON", the tachometer and speedometer needles should move to the maximum,
then back to zero.
In addition, the oil level warning light and fuel level warning light should come on for a few seconds, then
go off.
If the tachometer or speedometer needle does not move as described or either of the warning lights does
not come on, check the electrical circuits.
If the throttle position sensor or speed sensor are defective, the tachometer will repeatedly display the fol-
lowing error code:
Use the chart below to identify the faulty electrical circuit.
When the tachometer displays the error code check the throttle position sensor or speed sensor as de-
scribed in the following pages.
0 r/min (for 3 seconds)
Circuit-specific number of r/min for 2.5
seconds (see the table below)
Current engine speed for 3 seconds
Specific r/min Faulty electrical circuit
3,000 r/min Throttle position sensor
4,000 r/min
7-49
ELEC
SELF-DIAGNOSIS
Speed sensor