Audio Unit Connector for Inputs and Outputs

Audio Unit Connector A (24P) (female terminals)

Cavity
Terminal Name
Description
A1
GND
Ground for audio unit (G504)
A2
Not used
???
A3
+B AUDIO
Continuous power source
A4
Not used
???
A5
RL SPKR+
Outputs sound signal for left rear speaker
A6
RL SPKR?
Outputs sound signal for left rear speaker
A7
RR SPKR+
Outputs sound signal for right rear speaker
A8
RR SPKR?
Outputs sound signal for right rear speaker
A9*1
AUDIO REMOTE SW
Detects control signal from audio remote switch
A10
Not used
???
A11
Not used
???
A12
K LINE
Detects scan tool signal (serial data)
A13
Not used
???
A14
B-CAN_H
Communication signal
A15
FL SPKR+
Outputs sound signal for driver's door speaker
A16
FL SPKR?
Outputs sound signal for driver's door speaker
A17
FR SPKR+
Outputs sound signal for front passenger's door speaker
A18
FR SPKR?
Outputs sound signal for front passenger's door speaker
A19*1
REMOTE SW GND
Ground for audio remote-HFL switch
A20*1
HFT/NAVI REMOTE SW
Detects control signal from HFL switch
A21
Not used
???
A22
Not used
???
A23
RR CAMERA ACC DIODE*2
Power source for accessories or detects reverse signal
ACC*3
Power source for accessories
A24
B-CAN_L
Communication signal
*1: Without multi-information display (MID)
*2: USA and Canada models
*3: Mexico models


Audio Unit Connector C (32P) (female terminals)

Cavity
Terminal Name
Description
C1
Not used
???
C2
Not used
???
C3
Not used
???
C4
Not used
???
C5
Not used
???
C6
SH MIC
Shield for terminals No. 22 and No. 23
C7
Not used
???
C8
Not used
???
C9
Not used
???
C10
IG1 METER
IG1 power source (not used)
C11
Not used
???
C12
Not used
???
C13*
CAMERA VCC
Power source for rearview camera
C14*
CAMERA GND
Ground for rearview camera
C15
Not used
???
C16*
CAMERA ADPT
Detects connection for rearview camera
C17
Not used
???
C18
Not used
???
C19
Not used
???
C20
Not used
???
C21
Not used
???
C22
MIC+
Inputs sound signal from HFL microphone
C23
MIC GND
Ground for HFL microphone
C24
Not used
???
C25
Not used
???
C26
Not used
???
C27
Not used
???
C28*
SH CAMERA
Shield for terminals No. 13, No. 14, and No. 29
C29*
CAMERA V
Inputs NTSC video signal from rearview camera
C30
Not used
???
C31*
CAMERA BIT0
Outputs mode select signal for rearview camera
C32*
CAMERA BIT1
Outputs mode select signal for rearview camera
*: With rearview camera


Audio Unit Connector E (3P) (female terminals)

Cavity
Terminal Name
Description
E1
ANT+B
Power source for AM/FM antenna amplifier
E2
RF IN
Inputs AM/FM signal
E3
SH(RF IN)
Shield for terminal No. 2
Audio Unit Connector F (5P) (female terminals)

Cavity
Terminal Name
Description
F1
USB1 GND
Ground for USB port
F2
USB1 VBUS
Outputs power source for USB port
F3
USB1 DATA+
Communication signal
F4
USB1 DATA?
Communication signal
F5
USB1 SH
Shield for terminals No. 1, No. 2, No. 3, and No. 4