Checking The Abs Warning Light; Only The Abs Warning Light Fails To Come On; The Abs Warning Light And All Other Indicator Lights Fail To Come On - Yamaha 2012 TMAX XP500A Service Manual

EWA59C2803
WARNING
When maintenance or checks have been performed on components related to the ABS, be
sure to perform a final check before delivering the vehicle to the customer. (Refer to "[C-3]
FINAL CHECK" on page 8-117.)
EAS27830
[A] CHECKING THE ABS WARNING LIGHT
Set the main switch to "ON". (Do not start the engine.)
1. The ABS warning light does not come on.
• Only the ABS warning light fails to come on. [A-1]
• The ABS warning light and all other indicator lights fail to come on. [A-2]
2. The ABS warning light flashes. [A-3]
3. The ABS warning light comes on. [A-4]
EAS59C2801
[A-1] ONLY THE ABS WARNING LIGHT FAILS TO COME ON
1. Check for a short circuit to the ground between the White/Red terminal of the ABS ECU coupler
and White/Red terminal of the meter assembly.
• If there is short circuit to the ground, the wire harness is defective. Properly repair or replace
the defective harness.
2. Disconnect the ABS ECU coupler and check that the ABS warning light comes on when the
main switch is set to "ON".
• If the ABS warning light does not come on, the meter assembly circuit (including the ABS
warning light [LED]) is defective. Replace the meter assembly.
• If the ABS warning light comes on, the ABS ECU is defective. Replace the hydraulic unit
assembly.
EAS59C2802
[A-2] THE ABS WARNING LIGHT AND ALL OTHER INDICATOR LIGHTS FAIL TO COME ON
1. Main switch
• Check the main switch for continuity.
Refer to "CHECKING THE SWITCHES" on page 8-123.
• If there is no continuity, replace the main switch/immobilizer unit.
2. Battery
• Check the condition of the battery.
Refer to "CHECKING AND CHARGING THE BATTERY" on page 8-127.
• If the battery is defective, clean the battery terminals and recharge it, or replace the battery.
3. Main fuse
• Check the fuse for continuity.
Refer to "CHECKING THE FUSES" on page 8-127.
• If the main fuse is blown, replace the fuse.
4. Circuit
• Check the meter assembly circuit.
Refer to "CIRCUIT DIAGRAM" on page 8-85.
• If the meter assembly circuit is open, properly repair or replace the wire harness.
ABS (ANTI-LOCK BRAKE SYSTEM)
8-94