Honda CBR650RA Shop Manual page 174

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PGM-FI SYSTEM
3. ECM Serial Line Output Voltage Inspection
Turn the ignition switch OFF.
Disconnect the combination meter 20P (Gray)
connector (page 21-6).
Connect the ECM 33P (Gray) connector (page 4-
76).
Remove the dummy connector [1] from the DLC.
Short the DLC terminals using the special tool.
CONNECTION: Brown – Green
TOOL:
[2] SCS short connector
Rotate and hold the throttle grip [1] to the fully open
position.
Turn the ignition switch ON while holding the throttle
grip at the fully open position over 10 seconds.
The ECM enters the communication diagnostic
mode.
Measure the voltage at the combination meter 20P
(Gray) connector [1] of the wire harness side and
ground.
CONNECTION:
CBR650RA: White (+) – Ground (–)
CB650RA:
STANDARD:
Does the standard voltage exist?
YES
NO
4-70
070MZ-0010300
Red/blue (+) – Ground (–)
8 V or more (Every 5 seconds)
– Inspect the combination meter (page 21-
6).
– Replace the ECM with a known good one,
and recheck.
[1]
[1]
[1]
CBR650RA: W
CB650RA: R/Bu
[2]