Bajaj pulsar DTS-i, Service Station Manual

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ELECTRICAL CHECKING
PROCEDURES
Pulsar 150/180 DTS-i
Service Station Manual
228
Dealer Development Center
Akurdi Pune
• Non contact Wheel Sensor - In LCD speedo console there are no moving
parts as wheel speed is sensed through a non contact hall effect sensor.
The hall sensor is an electronic switch which operates due to magnetic
field. The sensor has 3 wires - Supply, Earth & Output. This sensor
converts one rotation of front wheel into 8 pulses & these are transmitted
to digital speedometer through a sensor cable.
Do’s & Don’ts
• Do not apply pressurized water jet on vehicle speed sensor.
• Handle wheel sensor carefully while working on front brake drum related
repairs.
• Ensure sensor cable is intact & not fouling with any other part.
• Speed sensor should not physically touch to magnetic ring.
Note: Gap between speed sensor & magnetic ring must be : max 4 mm &
min - 0.5 mm. Ensure intact condition of ‘O’ Ring for speed sensor. Use
correct size ‘O’ Ring in case of replacement.
Vehicle Speed Sensor
1. Set multimeter to 20 VDC
2. Connect multimter to 4 pole coupler of wheel sensor as per table given
below.
Multve
Blue-White wire
Multimeter -ve Black-Yellow wire
3. Switch ON ignition switch
4. Rotate front wheel slowly, mark on the tyre for identification and to
ensure that one rotation is complete.
5. In one rotation of front wheel, 8 pulses are generated per revolution.
The reading on multimeter will vary between 4~4.5 VDC & 0VDC 8
times.
6 Conclusion -
Wheel Sensor
If 8 times reading on multimeter varies between
OK 4 ~ 4.5 VDC and 0 VDC in one rotation of front
wheel.
Wheel sensor If reading on multimeter does not vary & remains
Faulty continuously in the range of 4~4.5 VDC
If reading on multimeter does not vary & remains
continuously in the range of 0VDC.
SOP for checking wheel sensor
Measuring & Testing Equipment : Multimeter