Yamaha N MAX GPD150-A 2015 Service Manual page 412

Fault code No. 51, 52
Fault code No.
Item
Symptom
Order Item/components and probable cause
1 Defective battery
2 Disconnected battery terminal
3 Defective charging system
Fault code No. 53
TIP
Turn the main switch to "OFF" before disconnecting or connecting a coupler.
Fault code No.
Item
Symptom
Order Item/components and probable cause
1 Defective battery
2 Defective coupler between the battery
and the hydraulic unit assembly
3 Open or short circuit in the wire harness
between the battery and the hydraulic unit
assembly
4 Defective charging system
Fault code No. 54
TIP
Turn the main switch to "OFF" before disconnecting or connecting a coupler.
ABS (ANTI-LOCK BRAKE SYSTEM)
51
52
• Vehicle system power supply (voltage of ABS ECU power supply is
high) (for fault code No. 51)
• Vehicle system power supply (voltage of wheel sensor power supply
is high) (for fault code No. 52)
• Power voltage supplied to the ABS ECU in the hydraulic unit assem-
bly is too high. (for fault code No. 51)
• Power voltage supplied to the wheel sensor is too high. (for fault
code No. 52)
Check or maintenance job
Recharge or replace the battery.
Refer to "CHECKING AND CHARGING THE BATTERY"
on page 8-99.
Check the connection. Replace or reconnect the termi-
nal if necessary.
Check the charging system.
Refer to "CIRCUIT DIAGRAM" on page 8-11.
53
Vehicle system power supply (voltage of ABS ECU power supply is
low)
Power voltage supplied to the ABS ECU in the hydraulic unit assem-
bly is too low.
Check or maintenance job
Recharge or replace the battery.
Refer to "CHECKING AND CHARGING THE BATTERY"
on page 8-99.
• Check the coupler for any pins that may be pulled out.
• Check the locking condition of the coupler.
• If there is a malfunction, repair it and connect the cou-
pler securely.
See TIP.
• Replace if there is an open or short circuit.
• Between ABS ECU coupler and ABS control unit fuse.
(Brown/White–Brown/White)
Check the charging system.
Refer to "CIRCUIT DIAGRAM" on page 8-11.
8-87