DTC 2624: Upper Display Diag (Display Audio) (2016-17)

NOTE: 

• Check the vehicle battery condition first .
• This navigation DTC sets when NG is indicated in the Rear Wide Camera diagnosis (the Rear Wide Camera icon is red in the System Link).
• Before you troubleshoot, make sure to follow the General Troubleshooting Information - Refer to: How to Troubleshoot the Audio System, or Audio System Self-Diagnostic Function (Without Navigation, Without Touch Screen), or Audio System Self-Diagnostic Function (Without Navigation, With Touch Screen), or How to Troubleshoot the Audio System (Display Audio) (2016-17) .
• Check the connectors for poor connections or loose terminals.

1. Problem verification

   -1. Clear the hard error codes.

   - 2. Turn the vehicle to the OFF (LOCK) mode then the ON mode.

   - 3. Check for hard error codes.

   Is DTC 1406 indicated with DTC 2612?

   YES 

   The failure is duplicated, go to step 2.

   NO: Only DTC 2612 is indicated

   The failure is duplicated, go to step 7. Refer to:  7

   NO: DTC is not indicated

   Intermittent failure, the system is OK at this time.

2. Determine possible failure area (related unit, others)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Disconnect the following connector.

   Tuner unit connector A (12P)

   - 3. Clear the hard error codes.

   - 4. Turn the vehicle to the ON mode.

   - 5. Check for hard error codes.

   Is DTC 2612 indicated?

   YES 

   Go to step 3.

   NO 

   Replace the tuner unit .

3. Shorted wire check (GA BUS+ line, GA BUS- line)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Disconnect the following connectors.

   Audio-navigation unit connector D (12P)

   Multi-information display unit connector A (12P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Audio-navigation unit connector D (12P): disconnected
   	Multi-information display unit connector A (12P): disconnected
   	Tuner unit connector A (12P): disconnected
   Test point 1	Multi-information display unit connector A (12P) No. 1 - Refer to: Multi-Information Display Unit Connector for Inputs and Outputs, or Multi-Information Display Unit Connector for Inputs and Outputs (Display Audio (With Navigation)) (2016-17)
   Test point 2	Body ground

   Test point 1	Multi-information display unit connector A (12P) No. 2 - Refer to: Multi-Information Display Unit Connector for Inputs and Outputs, or Multi-Information Display Unit Connector for Inputs and Outputs (Display Audio (With Navigation)) (2016-17)
   Test point 2	Body ground

   Is there continuity?

   YES 

   There is a short to body ground in the GA BUS wire (s). Replace the affected shielded harness.

   NO 

   The GA BUS+ and the GA BUS- wires are not shorted to ground. Go to step 4.

4. Shorted wire check (GA BUS+ line to GA BUS- line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Audio-navigation unit connector D (12P): disconnected
   	Multi-information display unit connector A (12P): disconnected
   	Tuner unit connector A (12P): disconnected
   Test point 1	Multi-information display unit connector A (12P) No. 1 - Refer to: Multi-Information Display Unit Connector for Inputs and Outputs, or Multi-Information Display Unit Connector for Inputs and Outputs (Display Audio (With Navigation)) (2016-17)
   Test point 2	Multi-information display unit connector A (12P) No. 2 - Refer to: Multi-Information Display Unit Connector for Inputs and Outputs, or Multi-Information Display Unit Connector for Inputs and Outputs (Display Audio (With Navigation)) (2016-17)

   Is there continuity?

   YES 

   There is a short in the GA BUS wires. Replace the affected shielded harness.

   NO 

   The GA BUS+ and the GA BUS- wires are not shorted. Go to step 5.

5. Shorted wire check (SH GA BUS line to another lines)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Audio-navigation unit connector D (12P): disconnected
   	Multi-information display unit connector A (12P): disconnected
   	Tuner unit connector A (12P): disconnected
   Test point 1	Multi-information display unit connector A (12P) No. 7 - Refer to: Multi-Information Display Unit Connector for Inputs and Outputs, or Multi-Information Display Unit Connector for Inputs and Outputs (Display Audio (With Navigation)) (2016-17)
   Test point 2	Multi-information display unit connector A (12P) No. 1 - Refer to: Multi-Information Display Unit Connector for Inputs and Outputs, or Multi-Information Display Unit Connector for Inputs and Outputs (Display Audio (With Navigation)) (2016-17)

   Test point 1	Multi-information display unit connector A (12P) No. 7 - Refer to: Multi-Information Display Unit Connector for Inputs and Outputs, or Multi-Information Display Unit Connector for Inputs and Outputs (Display Audio (With Navigation)) (2016-17)
   Test point 2	Multi-information display unit connector A (12P) No. 2 - Refer to: Multi-Information Display Unit Connector for Inputs and Outputs, or Multi-Information Display Unit Connector for Inputs and Outputs (Display Audio (With Navigation)) (2016-17)

   Is there continuity?

   YES 

   There is a short in the GA BUS wires. Replace the affected shielded harness.

   NO 

   The SH GA BUS wire is OK. Go to step 6.

6. Open wire check (GA BUS+ line, GA BUS- line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Audio-navigation unit connector D (12P): disconnected
   	Multi-information display unit connector A (12P): disconnected
   	Tuner unit connector A (12P): disconnected
   Test point 1	Multi-information display unit connector A (12P) No. 1 - Refer to: Multi-Information Display Unit Connector for Inputs and Outputs, or Multi-Information Display Unit Connector for Inputs and Outputs (Display Audio (With Navigation)) (2016-17)
   Test point 2	Audio-navigation unit connector D (12P) No. 7 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (2013), or Audio-Navigation Unit Connector for Inputs and Outputs (2014), or Audio-Navigation Unit Connector for Inputs and Outputs (2015 2016), or Audio-Navigation Unit Connector for Inputs and Outputs (Display Audio) (2016-17)

   Test point 1	Multi-information display unit connector A (12P) No. 2 - Refer to: Multi-Information Display Unit Connector for Inputs and Outputs, or Multi-Information Display Unit Connector for Inputs and Outputs (Display Audio (With Navigation)) (2016-17)
   Test point 2	Audio-navigation unit connector D (12P) No. 1 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (2013), or Audio-Navigation Unit Connector for Inputs and Outputs (2014), or Audio-Navigation Unit Connector for Inputs and Outputs (2015 2016), or Audio-Navigation Unit Connector for Inputs and Outputs (Display Audio) (2016-17)

   Is there continuity?

   YES 

   Replace the multi-information display unit .

   NO 

   There is an open in the wire (s) between the multi-information display unit and the audio-navigation unit. Replace the affected shielded harness.

7. Open wire check (+B AUDIO line)

   -1. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle ON mode
   Test point 1	Multi-information display unit connector A (12P) No. 6 - Refer to: Multi-Information Display Unit Connector for Inputs and Outputs (Without Navigation), or Multi-Information Display Unit Connector for Inputs and Outputs (Display Audio (Without Navigation)) (2016-17)
   Test point 2	Body ground

   Is there battery voltage?

   YES 

   The +B AUDIO wire is OK. Go to step 8.

   NO 

   Repair an open in the wire between the No. A22 (10 A) fuse in the under-hood fuse/relay box and the multi-information display unit.

8. Open wire check (ACC line)

   -1. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle ON mode
   Test point 1	Multi-information display unit connector A (12P) No. 5 - Refer to: Multi-Information Display Unit Connector for Inputs and Outputs (Without Navigation), or Multi-Information Display Unit Connector for Inputs and Outputs (Display Audio (Without Navigation)) (2016-17)
   Test point 2	Body ground

   Is there battery voltage?

   YES 

   The ACC wire is OK. Go to step 9.

   NO 

   Repair an open in the wire between the No. B37 (7.5A) fuse in the under-dash fuse/relay box and the multi-information display unit.

9. Open wire check (GND line)

   -1. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle ON mode
   Test point 1	Multi-information display unit connector A (12P) No. 12 - Refer to: Multi-Information Display Unit Connector for Inputs and Outputs (Without Navigation), or Multi-Information Display Unit Connector for Inputs and Outputs (Display Audio (Without Navigation)) (2016-17)
   Test point 2	Body ground

   Is there less than 0.2 V?

   YES 

   The GND wire is OK. Go to step 10.

   NO 

   Repair an open or high resistance in the wire between the multi-information display unit and body ground (G505).

10. Open wire check (GA BUS+ line, GA BUS- line)

    -1. Disconnect the following connectors.

    Multi-information display unit connector A (12P)

    Audio-navigation unit connector D (12P)

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

    Test condition	Vehicle OFF (LOCK) mode
    	Multi-information display unit connector A (12P): disconnected
    	Audio-navigation unit connector D (12P): disconnected
    Test point 1	Multi-information display unit connector A (12P) No. 1 - Refer to: Multi-Information Display Unit Connector for Inputs and Outputs, or Multi-Information Display Unit Connector for Inputs and Outputs (Display Audio (With Navigation)) (2016-17)
    Test point 2	Audio-navigation unit connector D (12P) No. 7 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (2013), or Audio-Navigation Unit Connector for Inputs and Outputs (2014), or Audio-Navigation Unit Connector for Inputs and Outputs (2015 2016), or Audio-Navigation Unit Connector for Inputs and Outputs (Display Audio) (2016-17)

    Test point 1	Multi-information display unit connector A (12P) No. 2 - Refer to: Multi-Information Display Unit Connector for Inputs and Outputs, or Multi-Information Display Unit Connector for Inputs and Outputs (Display Audio (With Navigation)) (2016-17)
    Test point 2	Audio-navigation unit connector D (12P) No. 1 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (2013), or Audio-Navigation Unit Connector for Inputs and Outputs (2014), or Audio-Navigation Unit Connector for Inputs and Outputs (2015 2016), or Audio-Navigation Unit Connector for Inputs and Outputs (Display Audio) (2016-17)

    Is there continuity?

    YES 

    Replace the multi-information display unit .

    NO 

    There is an open in the wire (s) between the multi-information display unit and the audio-navigation unit. Replace the affected shielded harness.