Honda CBR650RA Shop Manual page 472

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LIGHTS/METERS/SWITCHES
ESS SYSTEM INSPECTION
• While the hazard system is operating, the ESS system will not operate.
Check the following:
– No ABS DTC indicated (page 19-7)
– Turn signal light operating
– Hazard system operating
– Turn signal relay (page 21-21)
– Brake light switch (page 21-17)
– Brake light switch line open circuit (page 21-22)
– Brake light switch line short circuit (page 21-23)
– ESS line open circuit (page 21-23)
– ESS line short circuit (page 21-23)
• Even if any turn signal lights are abnormal, other normal turn signal lights will work with the ESS system.
• If the ESS system operates at all times, replace the ABS modulator with a new one (page 19-26).
To forcibly activate the ESS system, perform the procedure as follows:
1. Connect the SCS short connector to the DLC (page 4-9).
2. Turn the ignition switch ON.
3. Apply the front or rear brake and check the turn signal lights operation.
The turn signal lights should be blinking with the brake applied and turning OFF with the brake released.
BRAKE LIGHT SWITCH LINE OPEN CIRCUIT INSPECTION
Disconnect the following:
– Right handlebar switch 6P (Gray) connector (page
21-16) (CBR650RA)
– Right handlebar switch 5P (Gray) connector (page
21-16) (CB650RA)
– Rear brake light switch 2P (Black) connector (page
21-17)
– ABS modulator 18P (Black) connector (page 19-9)
Check for continuity between the right handlebar switch
(Gray) [1], rear brake light switch 2P (Black) [2] and
ABS modulator 18P (Black) [3] connector terminals at
the harness side.
CONNECTION:
Green/yellow – Green/yellow
There should be continuity.
If there is no continuity, check for open circuit in Green/
yellow wire.
21-22
CBR650RA:
[1]
G/Y
CB650RA:
[1]
G/Y
Rear:
[2]
G/Y
[3]
G/Y
[3]
G/Y
[3]
G/Y