No.
  | Name
  | Terminal Description
  | Condition
  | Specified Condition
  | 
B1
  | -
  | -
  | ?
  | ?
  | 
B2
  | -
  | -
  | ?
  | ?
  | 
B3
  | -
  | -
  | ?
  | ?
  | 
B4
  | Steering remocon
  | Steering Wheel Remote Control
  | Steering Wheel switch pushed
  | 0.5V ~ 3V
  | 
B5
  | -
  | -
  | ?
  | ?
  | 
B6
  | USB D (+)
  | USB D+
  | USB device is inserted
  | 3.2V ~ 3.45
  | 
B7
  | USB/ iPod VDD
  | USB /iPod power
  | USB/iPod device is inserted
  | 4.9V ~ 5.1V
  | 
B8
  | AUX R input
  | AUX Right Sound Signal
  | External Auxiliary device is Audio playing (At time of Aux jack use)
  | A waveform synchronized with sound is output
  | 
B9
  | AUX ground
  | AUX Reference Ground
  | Always
  | Below 1 ohm
  | 
B10
  | Mic (+) (Bluetooth)
  | Bluetooth MIC+
  | Input the Voice Signal via MIC
  | A waveform synchronized with Voice data via MIC
  | 
B11
  | ACC
  | Accessory
  | Engine switch on(ACC)
  | 11 ~ 14 V
  | 
B12
  | Battery (+)
  | Battery
  | Always
  | 11 ~ 14 V
  | 
B13
  | -
  | -
  | ?
  | ?
  | 
B14
  | -
  | -
  | ?
  | ?
  | 
B15
  | -
  | -
  | ?
  | ?
  | 
B16
  | Vehicle speed
  | Speed Sensor Signal
  | Engine switch on(IGN), car is moved slowly
  | Approx. 5V Level Pulse Generation
  | 
B17
  | Remote control ground
  | Steering Wheel Remote Control Gnd
  | Always
  | Below 1 ohm
  | 
B18
  | USB D (-)
  | USB D-
  | USB device is inserted
  | 3.2V ~ 3.45
  | 
B19
  | USB/ iPod ground
  | iPod detection line
  | iPod device is inserted
  | GND
  | 
B20
  | AUX detect
  | AUX Signal Input Detect
  | Auxiliary device is inserted
  | 0V(Low) > 5V(High)
  | 
B21
  | AUX L input
  | AUX Left Sound Signal
  | External Auxiliary device is Audio playing (At time of Aux jack use)
  | A waveform synchronized with sound is output
  | 
B22
  | Mic (-) (Bluetooth)
  | Bluetooth MIC-
  | Input the Voice Signal via MIC
  | A waveform synchronized with Voice data via MIC
  | 
B23
  | -
  | -
  | ?
  | ?
  | 
B24
  | Power ground
  | Ground
  | Always
  | Below 1 ohm
  |