Honda CBR650RA Shop Manual page 172

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PGM-FI SYSTEM
4. Front Wheel Speed Sensor Signal Output Line
Short Circuit Inspection
Check for continuity between the wire harness side
ECM 33P (Gray) connector [1] and ground.
TOOL:
Test probe
CONNECTION: White/blue – Ground
Is there continuity?
YES
NO
5. ECM Inspection
Replace the ECM with a known good one (page 4-
76).
Connect the ABS modulator 18P (Black) connector.
Erase the DTC (page 4-9).
Test-ride the motorcycle above 20 km/h (12 mph)
for more than 30 seconds.
Stop the engine.
Check the DTC with the GST or MCS.
Is P1500 indicated?
YES
NO
4-68
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– Short circuit in the White/blue wire
– GO TO STEP 5.
– Replace the ABS modulator with a known
good one and recheck (page 19-26).
– Faulty original ECM.
[1]
W/Bu
(Terminal side of the wire harness)