LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Honda >> 2020 >> Fit EX >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Audio Visual System - Symptom Troubleshooting >> Connector For Inputs And Outputs >> Audio-Navigation Unit Connector for Inputs and Outputs
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Audio-Navigation Unit Connector for Inputs and Outputs

Connector Index
Audio-Navigation Unit Connector A (24P)
Audio-Navigation Unit Connector B (20P)
Audio-Navigation Unit Connector C (24P)
Audio-Navigation Unit Connector D (12P)
Audio-Navigation Unit Connector E (3P)
Audio-Navigation Unit Connector F (5P)
Audio-Navigation Unit Connector G (5P)
Audio-Navigation Unit Connector H (20P)
Audio-Navigation Unit Connector J (2P)

AUDIO-NAVIGATION UNIT CONNECTOR A (24P) 

GHH79027Courtesy of HONDA, U.S.A., INC.
Cavity Terminal Name Description Voltage (about) Symptom
A1 GND Ground for audio-navigation unit (G404) Vehicle in ACCESSORY mode: Less than 0.2 V If open: Audio-navigation unit screen goes black (backlight still operates). Audio system does not work.

If short to ground: No effect on system.

A2 Not used ------ ------ ------
A3 +B BACKUP MAIN Continuous power source Battery voltage If open: Audio-navigation unit screen goes black. Audio system does not work.

If short to ground: Blows the No. B21 (15 A) fuse in the under-hood fuse/relay box.

A4 Not used ------ ------ ------
A5 RL SPKR+ Outputs sound signal for left rear speaker ------ ------
A6 RL SPKR- Outputs sound signal for left rear speaker ------ ------
A7 Not used ------ ------ ------
A8 Not used ------ ------ ------
A9 RR SPKR+ Outputs sound signal for right rear speaker ------ ------
A10 RR SPKR- Outputs sound signal for right rear speaker ------ ------
A11 REMOTE SW GND Audio remote switch ground Vehicle in ACCESSORY mode: Less than 0.2 V ------
A12 Not used ------ ------ ------
A13 K LINE Detects scan tool signal (serial data) ------ ------
A14 Not used ------ ------ ------
A15 FL SPKR+ Outputs sound signal for left front speakers ------ ------
A16 FL SPKR- Outputs sound signal for left front speakers ------ ------
A17 Not used ------ ------ ------
A18 Not used ------ ------ ------
A19 FR SPKR+ Outputs sound signal for right front speakers ------ ------
A20 FR SPKR- Outputs sound signal for right front speakers ------ ------
A21 Not used ------ ------ ------
A22 AUDIO REMOTE SW Detects control signal from audio remote switch Vehicle in ACCESSORY mode: 2.5 V - 2.9 V ------
A23 DISPLAY SW Detects control signal from audio remote switch Vehicle in ACCESSORY mode: 2.5 V - 2.9 V ------
A24 ACC Power source for accessories Vehicle in ACCESSORY mode: Battery voltage If open: Audio-navigation unit screen goes black. Audio system does not work.

If short to ground: Blows the No. C37 (7.5 A) fuse in the under-dash fuse/relay box.

AUDIO-NAVIGATION UNIT CONNECTOR B (20P) 

GHH79028Courtesy of HONDA, U.S.A., INC.
Cavity Terminal Name Description Voltage (about) Symptom
B1 Not used ------ ------ ------
B2 Not used ------ ------ ------
B3 B-CAN_L Communication signal ------ If open/short to ground: System Links B-CAN icon shows red.
B4 Not used ------ ------ ------
B5 Not used ------ ------ ------
B6 Not used ------ ------ ------
B7 Not used ------ ------ ------
B8 Not used ------ ------ ------
B9 Not used ------ ------ ------
B10 Not used ------ ------ ------
B11 PARKING BRAKE SW Detects parking brake switch on signal Vehicle in ACCESSORY mode, parking brake switch is applied: Less than 0.2 V

Vehicle in ACCESSORY mode, parking brake switch is not applied: 3.3 V

------
B12 HFT/NAVI REMOTE SW Detects control signal from HFL switch Vehicle in ACCESSORY mode: 2.5 V - 2.9 V ------
B13 B-CAN_H Communication signal ------ If open/short to ground: System Links B-CAN icon shows red.
B14 Not used ------ ------ ------
B15 Not used ------ ------ ------
B16 Not used ------ ------ ------
B17 Not used ------ ------ ------
B18 Not used ------ ------ ------
B19 Not used ------ ------ ------
B20 Not used ------ ------ ------

AUDIO-NAVIGATION UNIT CONNECTOR C (24P) 

GHH79029Courtesy of HONDA, U.S.A., INC.
Cavity Terminal Name Description Voltage (about) Symptom
C1 F-CAN_L Communication signal ------ If open/short to ground: System Links F-CAN icon shows red.
C2 SH CAMERA Shield for terminals No. 3, No. 4, No. 15, and No. 16 ------ ------
C3 CAMERA V GND Ground for video signal Vehicle in ACCESSORY mode: Less than 0.2 V ------
C4 RC GND Ground for rear view camera for power source Vehicle in ACCESSORY mode: Less than 0.2 V ------
C5 CAMERA BIT0 Mode select signal for rearview camera 0 V or 5 V - 8 V (depends on rearview mode) ------
C6 LANEWATCH SW LaneWatch on/off signal from LaneWatch switch Vehicle in ACCESSORY mode, LaneWatch switch is pressed: Less than 0.2 V

Vehicle in ACCESSORY mode, LaneWatch switch is released: 3.3 V

------
C7 BACK LT Detects reverse signal of select lever from reverse relay circuit Vehicle in ON mode, transmission is shifted to R position/mode: Battery voltage

Vehicle in ON mode, transmission is shifted to any position/mode other than R position/mode: Less than 0.2 V

------
C8 LWC CAM VGND Ground for LaneWatch camera ------ ------
C9 SH LWC CAM Shield for terminals No. 8, No. 20, No. 21, No. 22, and No. 23 ------ ------
C10 Not used ------ ------ ------
C11 Not used ------ ------ ------
C12 Not used ------ ------ ------
C13 F-CAN_H Communication signal ------ If open/short to ground: System Links F-CAN icon shows red.
C14 VSP Detects vehicle speed pulse from PCM Vehicle in ACCESSORY mode: 5 V

Vehicle in ON mode: Pulses (depends on vehicle speed)

------
C15 CAMERA V Video signal for rearview camera ------ ------
C16 RC VCC Power source for rearview camera Vehicle in ACCESSORY mode: 8 V ------
C17 Not used ------ ------ ------
C18 CAMERA BIT1 Mode select signal for rearview camera 0 V or 5 V - 8 V (depends on rearview mode) ------
C19 CAMERA ADPT Detects connection for rearview camera Less than 0.2 V If open: System Links Rear Wide Camera icon shows red.
C20 LWC CAM VID Video signal for LaneWatch camera ------ ------
C21 LWC CAM VCC Power source for LaneWatch camera Vehicle in ACCESSORY mode: 8 V ------
C22 UNIT TO LWC Communication signal for LaneWatch camera ------ If open/short to ground: System Links LaneWatch icon shows red.
C23 LWC TO UNIT Communication signal for LaneWatch camera ------ If open/short to ground: System Links LaneWatch icon shows red.
C24 Not used ------ ------ ------

AUDIO-NAVIGATION UNIT CONNECTOR D (12P) 

GHH79030Courtesy of HONDA, U.S.A., INC.
Cavity Terminal Name Description Voltage (about) Symptom
D1 GA BUS- GA-Net bus communication signal ------ If open/short to ground: System Links XM icon shows red.
D2 SH GA BUS Shield for terminals No. 1 and No. 7 ------ ------
D3 GA AUDIO L- Inputs sound signal from XM receiver ------ ------
D4 GA AUDIO R- Inputs sound signal from XM receiver ------ ------
D5 SH GA AUDIO Shield for terminals No. 3, No. 4, No. 9, and No. 10 ------ ------
D6 GA GND GA-Net related units ground Vehicle in ACCESSORY mode: Less than 0.2 V If open: System Links XM icon shows red.
D7 GA BUS+ GA-Net bus communication signal ------ If open/short to ground: System Links XM icon shows red.
D8 GA SYS ON Output signal for GA-Net related units switching on/off Vehicle in ACCESSORY mode: Less than 0.2 V

Vehicle in OFF (LOCK) mode: 3.3 V - Battery voltage (depends on connected slave unit)

If open: System Links XM icon shows red.
D9 GA AUDIO L+ Inputs sound signal from XM receiver ------ ------
D10 GA AUDIO R+ Inputs sound signal from XM receiver ------ ------
D11 Not used ------ ------ ------
D12 GA+B Outputs power source for GA-Net related units Battery voltage If open/short to ground: System Links XM icon shows red.

AUDIO-NAVIGATION UNIT CONNECTOR E (3P) 

GHH79031Courtesy of HONDA, U.S.A., INC.
Cavity Terminal Name Description Voltage (about) Symptom
E1 SWD +B Power source for AM/FM antenna ------ ------
E2 AM/FM Inputs AM/FM signal ------ ------
E3 SH (AM/FM) Shield for terminal No. 2 ------ ------

AUDIO-NAVIGATION UNIT CONNECTOR F (5P) 

GHH79032Courtesy of HONDA, U.S.A., INC.
Cavity Terminal Name Description Voltage (about) Symptom
F1 USB1 GND Ground for communication signal ------ ------
F2 USB1 VBUS Outputs power source for USB port A ------ ------
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 ------ ------

AUDIO-NAVIGATION UNIT CONNECTOR G (5P) 

GHH79033Courtesy of HONDA, U.S.A., INC.
Cavity Terminal Name Description Voltage (about) Symptom
G1 USB2 GND Ground for communication signal ------ ------
G2 USB2 VBUS Outputs power source for USB port B ------ ------
G3 USB2 DATA+ Communication signal ------ ------
G4 USB2 DATA- Communication signal ------ ------
G5 USB2 SH Shield for terminals No. 1, No. 2, No. 3, and No. 4 ------ ------

AUDIO-NAVIGATION UNIT CONNECTOR H (20P) 

GHH79034Courtesy of HONDA, U.S.A., INC.
Cavity Terminal Name Description Voltage (about) Symptom
H1 T.M.D.S DATA2+ Inputs video/audio data signal ------ ------
H2 T.M.D.S DATA2 SHIELD Shield for terminals No. 1 and No. 3 ------ ------
H3 T.M.D.S DATA2- Inputs video/audio data signal ------ ------
H4 T.M.D.S DATA1+ Inputs video/audio data signal ------ ------
H5 T.M.D.S DATA1 SHIELD Shield for terminals No. 4 and No. 6 ------ ------
H6 T.M.D.S DATA1- Inputs video/audio data signal ------ ------
H7 T.M.D.S DATA0+ Inputs video/audio data signal ------ ------
H8 T.M.D.S DATA 0 SHIELD Shield for terminals No. 7 and No. 9 ------ ------
H9 T.M.D.S DATA0- Inputs video/audio data signal ------ ------
H10 T.M.D.S CLOCK+ TMDS synchronous signal ------ ------
H11 T.M.D.S CLOCK SHIELD Shield for terminals No. 10 and No. 12 ------ ------
H12 T.M.D.S CLOCK- TMDS synchronous signal ------ ------
H13 CEC HDMI control signal ------ ------
H14 UTILITY Not used ------ ------
H15 SCL I2C bus synchronous signal ------ ------
H16 SDA I2C bus communication signal ------ ------
H17 DDC, CEC GROUND Ground for HDMI control signal ------ ------
H18 +5V POWER 5 V power supply ------ ------
H19 HOT PLUG DETECT Detects connection signal ------ ------
H20 SHIELD Shield for all of terminals ------ ------

AUDIO-NAVIGATION UNIT CONNECTOR J (2P) 

GHH79035Courtesy of HONDA, U.S.A., INC.
Cavity Terminal Name Description Voltage (about) Symptom
J1 GPS ------ ------ If open/short to ground: System Links GPS antenna icon shows red.
J2 SH (GPS) ------ ------ If open: System Links GPS antenna icon shows red.