Honda CBR650RA Shop Manual page 436

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ANTI-LOCK BRAKE SYSTEM (ABS)
DTC 5-4 (Fail Safe Relay)
1. Fuse Inspection
Turn the ignition switch OFF.
Remove the main seat (page 2-11).
Remove the fuse/relay box cover [1] and check the
FSR fuse (30 A) [2] for blown.
Is the fuse blown?
YES
NO
2. Relay Input Line Short Circuit Inspection
Disconnect
connector (page 19-9).
With the FSR fuse (30 A) removed, check for
continuity between the wire harness side ABS
modulator 18P (Black) connector [1] terminal and
ground.
TOOL:
Test probe
CONNECTION: 18 – Ground
Is there continuity?
YES
NO
3. Relay Input Line Open Circuit Inspection
Install the FSR fuse (30 A).
Disconnect
connector (page 19-9).
Measure the voltage between the wire harness side
ABS modulator 18P (Black) connector [1] terminal
and ground.
TOOL:
Test probe
CONNECTION: 18 (+) – Ground (–)
Is there battery voltage?
YES
NO
19-20
– GO TO STEP 2.
– GO TO STEP 3.
the ABS modulator
07ZAJ-RDJA110
– Short circuit in the Red/black wire between
the fuse/relay box and ABS modulator 18P
(Black) connector
– Intermittent failure. Replace the FSR fuse
(30 A) with a new one, and recheck.
the ABS modulator
07ZAJ-RDJA110
– GO TO STEP 4.
– Open circuit in the Red/black wire between
the battery and ABS modulator 18P
(Black) connector
[2]
18P (Black)
[1]
(Terminal side of the wire harness)
[1]
18P (Black)
(Terminal side of the wire harness)
[1]
18
18