Yamaha FJR1300A(D), Service Manual

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ABS (ANTI-LOCK BRAKE SYSTEM)
8-136
EAS1MC1005
[B-1] A FAULT CODE NUMBER IS NOT DISPLAYED IN THE MULTI-FUNCTION METER RIGHT
DISPLAY
1. The ABS warning light remains on.
A malfunction is detected. [B-2]
2. The ABS warning light flashes every 0.5 second for more than 6 seconds.
A malfunction is not detected.
The ABS warning light flashes every 0.5 second if a fault code for a past malfunction is not stored in
the memory of the ABS ECU. The ABS warning light flashes quicker if a fault code is displayed on
the multi-function meter right display. If no fault code is displayed, make sure that the customer un-
derstands the possible conditions that may cause the ABS warning light to come on or flash even if
the system is normal.
TIP
• The ABS fault codes will not be displayed if a fault code for the fuel injection system is displayed on
the multi-function meter right display. To display the ABS fault codes, delete the fuel injection system
fault codes, and then start the check again.
• The test coupler adapter must be connected to the ABS test coupler to display the fault codes. If the
adapter is not connected, the ABS warning light will come on or flash, but no fault codes will be dis-
played.
EAS1MC1006
[B-2] THE ABS WARNING LIGHT REMAINS ON
1. The battery voltage is low.
• Check the condition of the battery.
Refer to “CHECKING AND CHARGING THE BATTERY” on page 8-174.
• If the battery voltage is low, clean the battery terminals and recharge it, or replace the battery.
2. ABS ECU fuse
• Check the ABS ECU fuse for continuity.
Refer to “CHECKING THE FUSES” on page 8-173.
• If the ABS ECU fuse is blown, replace the fuse.
3. ABS ECU coupler
• Check that the ABS ECU coupler is connected properly.
• Connect the couplers properly if necessary.
4. There is a break in the wire harness between the main switch and the ABS ECU or between the ABS
ECU and the ground.
• Check for continuity between the brown/blue terminal of the main switch coupler and brown/blue
terminal of the ABS ECU fuse.
• Check for continuity between the brown/white terminal of the ABS ECU fuse and the brown/white
terminal of the ABS ECU coupler.
• If there is no continuity, the wire harness is defective. Replace the wire harness.
• Check for continuity between the black/white terminal of the ABS ECU coupler and the ground.
• If there is no continuity, the wire harness is defective. Replace the wire harness.
5. There is a break in the wire harness between the ABS ECU and the meter assembly (ABS warning
light).
• Check for continuity between the green/red terminal of the ABS ECU coupler and the green/red
terminal of the meter assembly coupler.
6. The meter assembly circuit is defective.
• Disconnect the ABS ECU coupler.
• The green/red terminal of the ABS ECU coupler is short-circuited to the ground.
• Turn the main switch to “ON”, and then check the ABS warning light.
• If the ABS warning light is on, the internal circuit of the meter assembly is defective. Replace the
meter assembly.