Basic Troubleshooting Process - Yamaha 2003 FJR1300 Service Manual

ANTI-LOCK BRAKE SYSTEM (FJR1300A)
EAS00886

Basic troubleshooting process

Does not come on.
[B-1]
Warning light does
not come on.
[C-2]
[C-1]
All indicator
Only ABS warn-
lights do not
ing light does
come on.
not come on.
Check the
Check the
connectors
fuse.
and couplers.
[D-1]
ECU (ABS)
Return to [A]
NOTE:
_
Do not delete the malfunction codes during troubleshooting. Delete the malfunction codes only after service
has been completed.
WARNING
_
When maintenance or checks have been performed on components related to the ABS, be sure to per-
form a final check before delivering the motorcycle to the customer. (Refer to "[D-6] Final check".)
[A]
Check the ABS warning
light.
Flashing
[B-3] [B-2]
Warning light Warning light
keeps flashing. remains on.
[C-3]
Warning light
flashes continu-
ously.
Check the
brake switch
circuit.
Check the
test coupler
adaptor.
[D-3, D-4]
Sensor
Have all problems been corrected?
NO
[D-6-4] Delete the mal-
function code record.
Cannot delete
[D-6-6] Delete function test
Comes on for 2 seconds, then goes off.
Remains on.
[B-5]
Present
malfunction
YES
NOTE: Display the
malfunction code
number and record it.
[C-5]
Diagnose by
malfunction
codes.
Check the
ECU (ABS)
connector.
For details, use the diag-
nostic codes listed from
[C-5-1] to [C-5-13].
Check the
wire harness.
[D-2]
Fail-safe relay
Check the
hose routing.
OK
Delete
OK
– 83 –
CHAS
[B-4]
Past
malfunction
NO YES
[C-4]
ABS warning light
flashes every
0.5 second.
Check the
wire har-
nesses.
[D-1]
[D-5]
ECU (ABS)
Hydraulic unit
Not
OK
Hydraulic unit test
[D-6-3-1] [D-6-3-2]
OK
Finished
NO
Normal