Yamaha 2007 XP500, Руководство по обслуживанию, Страница: 398 / 450

ABS (ANTI-LOCK BRAKE SYSTEM) (XP500A)
8-83
●
Check the battery voltage. (Refer to “ CHECKING AND CHARGING THE BATTERY ” on page
8-107.)
●
Check if the main fuse or signal fuse is blown. If the main fuse is blown, determine the cause and
repair.
Replace with a new fuse. (Refer to
“ CHECKING THE FUSES ” on page 8-106.)
2. Check the connections.
●
Check that the main fuse coupler is securely connected.
●
Check that the main switch coupler is securely connected.
●
Check that the meter assembly coupler is securely connected. (Refer to “ ABS CONNECTOR LO-
CATION CHART ” on page 8-69.)
When these checks are finished, return to [A] and check the ABS again.
EAS15B3014
[C-3] ABS WARNING LIGHT FLASHES
With the engine off, check the front and rear brake switches.
Check if the brake light comes on when the front or rear brake is applied.
1. The light does not come on for only one brake.
→
The corresponding brake switch connector is disconnected. (Refer to “ CIRCUIT DIAGRAM ” .)
→
The corresponding brake switch is defective.
2. The light does not come on for either brake.
→
The wire harness (ABS system circuit) may be disconnected or the fuse may be blown. Check
the fuse and make sure the wire harness (ABS system circuit) (brown lead) is connected to the pow-
er source end of the brake switch. (Refer to
“ CIRCUIT DIAGRAM ” .)
3. The brake light comes on.
→
The wire harness (ABS system circuit) couplers may be disconnected.
4. Adjust the rear brake switch to the specified setting.
EAS15B3015
[C-4] ABS WARNING LIGHT FLASHES EVERY 0.5 SECOND
If the ABS warning light flashes every 0.5 second, the malfunction code of a past malfunction has not
been stored in the memory of the ECU (ABS). If a malfunction code is displayed on the multifunction
display, the ABS warning light flashes. Make sure that the customer understands the possible condi-
tions when the ABS warning light comes on.
1. Voltage drop
For the ABS to operate correctly, the voltage should be always higher than the specified voltage. If
the voltage drops to lower than 10 V, the ABS warning light comes on and the ABS does not operate.
When the voltage recovers to higher than 10 V, the ABS operates. However, the magneto, battery
and rectifier/regulator must be checked. Follow the regular procedures for service of the power sup-
ply system.
2. ABS is stopped by the ECU (ABS)
The ECU (ABS) may stop the ABS operation if it is exposed to extremely strong electromagnetic
waves or static electricity.
When the ECU (ABS) is no longer exposed to the electromagnetic waves, static electricity, and the
ABS warning light is not flashing, there is no effect on the operation of the ABS. Explain to the cus-
tomer that the ABS will operate normally.
EAS27880
[C-5] DIAGNOSIS BY THE MALFUNCTION CODE
Malfunction codes are used to determine the malfunctions that have occurred. (Refer to “ [B-4] MAL-
FUNCTION CHECK BY THE ABS SELF-DIAGNOSIS (PAST MALFUNCTION) ” and “ [B-5] MAL-
FUNCTION CHECK BY THE ABS SELF-DIAGNOSIS (PRESENT MALFUNCTION) ” .) The
malfunction codes are explained in the following table.
NOTE:
Record all of the malfunction codes displayed and check the check points.