Honda SH300I 2006, Manual

Page: 405 / 511

ANTI-LOCK BRAKE SYSTEM (ABS; SH300A/AII/AIII)
18-11
TROUBLESHOOTING
• Perform inspection with the ignition switch
turned "OFF", unless otherwise specified.
• All connector diagrams in the troubleshooting
are viewed from the terminal side.
• Use a fully charged battery. Do not diagnose with
a charger connected to the battery.
• When the ABS modulator assembly is detected
to be faulty, recheck the wire harness and con-
nector connections closely before replacing it.
• After diagnostic troubleshooting, erase the prob-
lem code (page 18-9) then test ride the scooter
above 30 km/h (18 mph) and check the other
problem code by retrieving the self-diagnosis
system (page 18-8).
NO PROBLEM CODE FAILURE
ABS INDICATOR DOES NOT COME ON (when the
ignition switch turned "ON")
1. Combination Meter Power/ground Line Inspec-
tion
Check the combination meter power and ground
lines (page 22-8).
Are the wires normal?
YES – GO TO STEP 2.
NO – Open circuit in related wires.
2. Indicator Operation Inspection
Disconnect the ABS modulator 25P connector.
Turn the ignition switch "ON" and check the ABS
indicator.
Does the indicator come on?
YES – Faulty ABS modulator.
NO – GO TO STEP 3.
3. Indicator Signal Line Short Circuit Inspection
Disconnect the combination meter connector
(page 22-8).
Check for continuity between the ABS modulator
connector of the wire harness side and ground.
Is there continuity?
YES – Short circuit in Red/Black wire between
the combination meter and ABS modu-
lator.
NO – Faulty combination meter.
ABS MODULATOR
25P CONNECTOR
CONNECTION: Red/Black – Ground
Red/Black
ABS MODULATOR
25P CONNECTOR