Honda SH300I 2006, Manual

Page: 410 / 511

ANTI-LOCK BRAKE SYSTEM (ABS; SH300A/AII/AIII)
18-16
PROBLEM CODE 13, 14, 23 or 43 (Rear Wheel Speed Sensor)
• The ABS indicator might blink under unusual
riding or conditions (page 18-10). This is tempo-
rary failure. Erase the problem code (page 18-9)
then test ride the scooter above 30 km/h (18
mph) and check the problem code by retrieving
the self-diagnosis system (page 18-8).
• If the problem code 43 is indicated, check the
rear brake for drag.
1. Speed Sensor Air Gap Inspection
Place the scooter on its centerstand.
Measure the clearance (air gap) between the
sensor and pulser ring at several points by turn-
ing the wheel slowly.
Is the air gap correct?
YES – GO TO STEP 2.
NO – Check each part for deformation and
looseness and correct accordingly.
Recheck the air gap.
2. Speed Sensor Condition Inspection
Inspect the area around the rear wheel speed
sensor:
Check that there is iron or other magnetic depos-
its between the pulser ring and wheel speed sen-
sor, and the pulser ring slots for obstructions.
Check installation condition of the pulser ring or
wheel speed sensor for looseness.
Check the pulser ring and sensor tip for defor-
mation or damage (e.g., chipped pulser ring
teeth).
Are the sensor and pulser ring in good condi-
tion?
YES – GO TO STEP 3.
NO – Remove any deposits. Install properly
or replace faulty part.
3. Speed Sensor Line Short Circuit Inspection (at
control unit side)
Disconnect the ABS modulator 25P connector
and the rear wheel speed sensor 6P connector.
Check for continuity between the ABS modulator
connector of the wire harness side and ground.
Is there continuity?
YES – Short circuit in wire between the ABS
modulator and speed sensor.
NO – GO TO STEP 4.
STANDARD: 0.2 – 1.2 mm (0.01 – 0.05 in)
SPEED SENSOR
PULSER RING
CONNECTION: Pink – Ground
Green/Red – Ground
Pink
Green/Red
ABS MODULATOR
25P CONNECTOR