Yamaha Fz6 N Service Manual

ABS (ANTI-LOCK BRAKE SYSTEM)
8-98
WARNING
EWA4S81009
Only use genuine Yamaha parts. Using other brake pipes, hoses and union bolts may close 
the brake hose lines. Check that the connections of the brake hose lines  from the brake master cylinder to the hydrau-
lic unit and to the front brake caliper from the hydraulic unit are correct.
WARNING
EWA4S81010
The front brake will not function properly if the connections are reversed.
 Front brake hose “1” inlet: from the front brake master cylinder
...

ABS (ANTI-LOCK BRAKE SYSTEM)
8-99
 Check that the brake fluid pressure is correctly transmitted to the brake disc when the brake pedal is operated and that the pressure decreases when the pedal is released.
3. Brake fluid  Visually check the brake fluid in the brake master cylinder reservoir and check the fluid for water,  foreign materials, solidification and contamination.
 Check for air in the brake hose lines.
4. Brake hose lines  Check the brake hose lines for kinks and deterioration...

ABS (ANTI-LOCK BRAKE SYSTEM)
8-100
Malfunction code 51 (Front wheel will not recover from the locking tendency even though the
signal is continuously transmitted from the ABS ECU to release the hydraulic state [when the
battery voltage is low].)
Check the following:
1. Rotation of the front wheel
Refer to “Malfunction code 41”.
2. Brake master cylinder and brake caliper Refer to “Malfunction code 41”.
3. Brake fluid Refer to “Malfunction code 41”.
4. Brake hose lines
Refer to “Malfunction code 41”.
5....

ABS (ANTI-LOCK BRAKE SYSTEM)
8-101
Malfunction code 61 (front), 62 (rear) (Sensor power supply is low)
1. Battery voltage lowCharge, check or replace the battery.
2. Battery terminal is disconnected.
Malfunction code 63 (front), 64 (r ear) (Sensor power supply failure)
1. GND short-circuit of the wire harness Remove the ABS ECU coupler and wheel sensor coupler and check the conductivity between 
the wire harness and GND.
If short-circuit is detected, replace the wire  harness because the cause is the...

ABS (ANTI-LOCK BRAKE SYSTEM)
8-102
2. Turn the main switch on. The multi-function display indicates previously recorded malfunction codes.
NOTE:
The ABS error code is not displayed dur ing the diagnosis of the fuel injection.
3. Turn the engine stop switch off.
CAUTION:
ECA4S81019
If the starter switch is pushed without turning the engine stop switch off, it may damage the 
starting motor gears or other parts, therefore be sure to turn it off.
4. Push the starter switch more than 10 times in 4 seconds...

ABS (ANTI-LOCK BRAKE SYSTEM)
8-103
EAS4S81033
[D-6-6] DELETE FUNCTION TEST
1. Place the vehicle on the sidestand.
2. Set the main switch to “OFF”.
3. Connect the test coupler adapter to the test coupler.
4. Set the main switch to “ON”.
5. Check: ECU voltage Connect the pocket tester (DC 20 V) to the ECU coupler.
Tester positive probe  → Brown/White “1”
Tester negative probe  → Black/White “2”
Lower than 12.8 V  → Charge or replace the battery.
6. Check:  ECU-to-start-switch-lead continuity
Connect the...

ABS (ANTI-LOCK BRAKE SYSTEM)
8-104
8. If the above-mentioned check are within specification, replace the ECU.
EAS4S81028
[D-6] FINAL CHECK
Checking procedures
1. Check the brake fluid level in the brake master cylinder reservoir and brake fluid reservoir.Refer to CHECKING THE BRAKE FLUID LEVEL on page 3-24.
2. Check the wheel sensor housings and wheel sensors for proper installation. Refer to INSTALLING THE FRONT WHEEL on page 4-14 and INSTALLING THE REAR 
WHEEL on page 4-22.
3. Perform hydraulic unit...

ELECTRICAL COMPONENTS
8-105
EAS27970
ELECTRICAL COMPONENTS 

ELECTRICAL COMPONENTS
8-106
1. Main switch
2. Front brake light switch
3. Starter relay
4. Battery
5. ABS motor relay (FZ6-NA/FZ6-NAHG/FZ6-SA/FZ6-SAHG)
6. Fuse box
7. Rear brake light switch
8. Neutral switch
9. Sidestand switch
10.Oil level switch
11.Radiator fan motor
12.Horn
13.Ignition coil 

ELECTRICAL COMPONENTS
8-107