Audio System - Rearview camera image does not change when selecting different views(Without Navigation with Touch Screen) (2016 2017 2018)

Rearview camera image does not change when selecting different views 

NOTE: 

• Check the vehicle battery condition first .
• You can select three different rearview camera angles for backing up. If there is no camera image on the display, go to Rearview camera image does not come on or work properly troubleshooting .
• Check the connectors for poor connections or loose terminals.

1. Problem verification

   -1. Press the engine start/stop button to select the ON mode.

   -2. Shift the transmission to R position/mode.

   -3. Press the ENTER button to see if the rearview image changes between the wide view, the normal view, and the top down view in this order.

   Does the rearview camera image change properly?

   YES 

   Intermittent failure, the system is OK at this time.

   NO 

   The failure is duplicated, go to step 2.

2. Shorted wire check (CAMERA BIT0 line, CAMERA BIT1 line)

   -1. Shift the transmission to P position/mode.

   -2. Press the engine start/stop button to select the OFF mode.

   -3. Disconnect the following connectors.

   Audio unit connector G (24P)

   Rearview camera 12P connector

   -4. Check for continuity between test points 1 and 2.

   Test condition	OFF mode
   	Audio unit connector G (24P): disconnected
   	Rearview camera 12P connector: disconnected
   Test circuit	CAMERA BIT0
   Test point 1	Audio unit connector G (24P) No. 5 (GRN)
   Test point 2	Body ground

   Test circuit	CAMERA BIT1
   Test point 1	Audio unit connector G (24P) No. 18 (BLU)
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   Repair a short to body ground in the wire(s) between the audio unit and the rearview camera.

   NO 

   The CAMERA BIT0 and the CAMERA BIT1 wires are not shorted to ground. Go to step 3.

3. Shorted wire check (CAMERA BIT0 line to CAMERA BIT1 line)

   -1. Check for continuity between test points 1 and 2.

   Test condition	OFF mode
   	Audio unit connector G (24P): disconnected
   	Rearview camera 12P connector: disconnected
   Test circuit	CAMERA BIT0, CAMERA BIT1
   Test point 1	Audio unit connector G (24P) No. 5 (GRN)
   Test point 2	Audio unit connector G (24P) No. 18 (BLU)

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   Repair a short in the wires between the audio unit and the rearview camera.

   NO 

   The CAMERA BIT0 and the CAMERA BIT1 wires are not shorted. Go to step 4.

4. Open wire check (CAMERA BIT0 line, CAMERA BIT1 line)

   -1. Check for continuity between test points 1 and 2.

   Test condition	OFF mode
   	Audio unit connector G (24P): disconnected
   	Rearview camera 12P connector: disconnected
   Test circuit	CAMERA BIT0
   Test point 1	Audio unit connector G (24P) No. 5 (GRN)
   Test point 2	Rearview camera 12P connector No. 2 (LT GRN)

   Test circuit	CAMERA BIT1
   Test point 1	Audio unit connector G (24P) No. 18 (BLU)
   Test point 2	Rearview camera 12P connector No. 1 (YEL)

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The CAMERA BIT0 and the CAMERA BIT1 wires are OK. Go to step 5.

   NO 

   Repair an open in the wire(s) between the audio unit and the rearview camera.

5. Rearview camera check (substitution)

   -1. Substitute a known-good rearview camera .

   -2. Reconnect all the connectors, and recheck.

   Does the symptom go away?

   YES 

   Replace the original rearview camera.

   NO 

   Replace the audio unit .