Common Fault Signals And Troubleshooting - Hyundai 12ESH Operation Manual

13. Common Fault Signals and Troubleshooting

Fault Code List and Troubleshooting of 1230 Controller
LED code 1311 display
1,2 motor speed encoder
Motor Failsafe
1,3 Motor Overcurrent
Motor Output Fault
1，4 Static Return To Off
2，1 Throttle Wiper High
2，2 EMR Wiring Open
2，3 High Pedal Disable
2，4 Throttle Wiper Low
3，1 Multiplexer Fault
3，2 Main Contactor
Pre charge
3，3 Brake Fault
25
Fault explanation
Signal of speed sensor cannot be
detected
Motor speed out of normal range 1 Speed sensor faulted
Motor overcurrent
Abnormal controller output
SRO sequence fault
Accelerator voltage too high
EMR connecting wire fault
HPD
Accelerator voltage too low
Multiplexer fault
Contactor missing or welded
Pre charge fault
Electromagnetic brake fault
Fault cause
1 False connecting wire of speed sensor of failure
2 Controller faulted
2 Electromagnetic brake of motor not fully released
3 Braking torque too small
4 Improper setting of P,I
5 Failsafe time too short
1 False connecting wire of motor
2 Controller faulted
1 False connecting wire of motor
2 Controller faulted
1 KSI,INTERLOCK,F/R switch sequence error
2 SRO type error
3 Direction switch fault
4 Sequence delay time too short
1 Accelerator damaged
2 False accelerator type
1 EMR connecting wire or connecting wire check is
disconnected
1 Incorrect operation sequence of accelerator and
KSI,INTERLOCK
2 False HPD type
3 Accelerator fault
4 Key switch, INTERLOCK power off
5 Sequence delay time too short
6 False accelerator type
1 Accelerator damaged
2 False accelerator type
Multiplexer fault
1 Contactor coil open circuit
2 Contacts cannot close
3 Contactor welded
4 Contactor coil driver short circuit
1 Controller damaged
2 Battery voltage too low
1 Brake coil short and open circuit
2 Electromagnetic brake driver fault