Audio System Symptom Troubleshooting - Rearview camera image does not change when selecting different views(Without Navigation, With Display Audio)

NOTE: 

• Check the vehicle 12 volt battery condition first .
• You can select three different rearview camera angles for backing up. If there is no camera image on the display, refer to Audio System Symptom Troubleshooting - Rearview camera image does not come on or work properly(Without Navigation, With Display Audio)  .
• Check the connectors for poor connections or loose terminals.

• 1. Problem verification:

  - 1. Turn the vehicle to the ON mode.

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

  - 3. Operate the audio unit to see if the rearview image changes between the wide view, the normal view, and the top down view.

  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. Turn the vehicle to the OFF (LOCK) 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	Vehicle OFF (LOCK) mode
  	Audio unit connector G (24P): disconnected
  	Rearview camera 12P connector: disconnected
  Test point 1	Audio unit connector G (24P) No. 5 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)
  Test point 2	Body ground

  Test point 1	Audio unit connector G (24P) No. 18 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)
  Test point 2	Body ground

  Is there continuity?

  YES 

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

  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	Vehicle OFF (LOCK) mode
  	Audio unit connector G (24P): disconnected
  	Rearview camera 12P connector: disconnected
  Test point 1	Audio unit connector G (24P) No. 5 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)
  Test point 2	Audio unit connector G (24P) No. 18 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)

  Is there continuity?

  YES 

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

  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	Vehicle OFF (LOCK) mode
  	Audio unit connector G (24P): disconnected
  	Rearview camera 12P connector: disconnected
  Test point 1	Audio unit connector G (24P) No. 5 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)
  Test point 2	Rearview camera 12P connector No. 2

  Test point 1	Audio unit connector G (24P) No. 18 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio)Audio Unit Connector for Inputs and Outputs(With Normal Audio)
  Test point 2	Rearview camera 12P connector No. 1

  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 rearview camera and the audio unit.

• 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 - Refer to: Audio Unit Removal and Installation(With Display Audio)Audio Unit Removal and Installation(With Normal Audio) .