Honda CBR650RA Shop Manual page 191

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MAIN RELAY DIODE
INSPECTION
Remove the air cleaner housing (page 7-12).
Remove the rubber cap [1] and main relay diode [2].
Installation is in the reverse order of removal.
Check for continuity between the diode terminals.
When there is continuity, a small resistance value will
register.
If there is continuity in direction shown by the arrow, the
diode is normal.
PGM-FI SYSTEM
[1]
A
A
B C
[2]
B
C
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