[B-5] Malfunction Are Currently Detected; [C-1] Only The Abs Warning Light Fails To Come On; [C-2] All Indicator Lights Fail To Come On - Yamaha VMAX 2009 Service Manual

2. The ABS warning light flashes every 0.5 second for more than 6 seconds.
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 display. If no fault code is displayed, make sure that the customer understands 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 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.
EAS2S31069

[B-5] MALFUNCTION ARE CURRENTLY DETECTED

Remove the left side cover to access the ABS test coupler. Connect the test coupler adapter to the ABS
test coupler.
When the test coupler adapter is connected to the ABS test coupler, the fault codes will be displayed
in the multi-function display. Record all of the displayed fault codes.
1. No fault codes are displayed in the multi-function display and the ABS warning light is on. [C-3]
2. No fault codes are displayed in the multi-function display and the ABS warning light is flashing. [C-4]
EAS2S31070

[C-1] ONLY THE ABS WARNING LIGHT FAILS TO COME ON

1. Check for a short circuit to the ground between the green/red terminal of the ABS ECU coupler and
green/black terminal of the meter assembly 1.
• If there is no 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 turned to "ON".
• If the ABS warning light does not come on, the meter assembly 1 circuit (including the ABS warning
light [LED]) is defective. Replace the meter assembly 1.
• If the ABS warning light comes on, the ABS ECU is defective. Replace the hydraulic unit assembly.
EAS2S31071

[C-2] ALL INDICATOR LIGHTS FAIL TO COME ON

1. Main switch
• Check the main switch for continuity.
Refer to "CHECKING THE SWITCHES" on page 8-129.
• 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 8-134.
ABS (ANTI-LOCK BRAKE SYSTEM)
1
8-91