Audio System - Center display unit does not work(Without Navigation) (2016 2017 2018)

Center display unit does not work 

NOTE: 

• Check the vehicle battery condition first .
• 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. Check if any information appears on the center display.

   Is there any information displayed?

   YES 

   Intermittent failure, the system is OK at this time.

   NO 

   The failure is duplicated, go to step 2.

2. Determine possible failure area (audio system, others)

   -1. Check if audio information appears on the ODMD (TM) (touch screen).

   Is the audio information displayed on the ODMD (TM) (touch screen)?

   YES 

   Go to step 3.

   NO 

   Go to Audio unit power will not turn on (No information display) troubleshooting .

3. Determine possible failure area (center display unit power and ground circuit, others)

   -1. Shield the center display unit from the sun with your hand, and check that the display is back lit (only the back light is on).

   Can you see the back light?

   YES 

   Go to step 7.

   NO 

   Go to step 4.

4. Open wire check (+B BACK UP line)

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

   -2. Disconnect the following connector.

   Center display unit connector A (12P)

   -3. Measure the voltage between test points 1 and 2.

   Test condition	OFF mode
   	Center display unit connector A (12P): disconnected
   Test circuit	+B BACK UP
   Test point 1	Center display unit connector A (12P) No. 6 (GRN)
   Test point 2	Body ground

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

   Is there battery voltage?

   YES 

   The +B BACK UP wire is OK. Go to step 5.

   NO 

   Repair an open in the wire between the No. A29 (10 A) fuse in the under-hood fuse/relay box and the center display unit.

5. Open wire check (ACC line)

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

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

   Test condition	ON mode
   	Center display unit connector A (12P): disconnected
   Test circuit	ACC
   Test point 1	Center display unit connector A (12P) No. 5 (PUR)
   Test point 2	Body ground

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

   Is there battery voltage?

   YES 

   The ACC wire is OK. Go to step 6.

   NO 

   Repair an open in the wire between the No. B19 (7.5 A) fuse in the under-dash fuse/relay box and the center display unit.

6. Open wire check (GND line)

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

   -2. Reconnect center display unit connector A (12P).

   -3. Press the engine start/stop button to select the ON mode.

   -4. Measure the voltage between test points 1 and 2.

   Test condition	ON mode
   Test circuit	GND
   Test point 1	Center display unit connector A (12P) No. 12 (BLK)
   Test point 2	Body ground

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   Is there less than 0.2 V?

   YES 

   Replace the center display unit .

   NO 

   Repair an open or high resistance in the wire between the center display unit and body ground (G502).

7. Shorted wire check (GVIF lines)

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

   -2. Disconnect the following connectors.

   Audio unit connector L (3P)

   Center display unit connector B (3P)

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

   Test condition	OFF mode
   	Audio unit connector L (3P): disconnected
   	Center display unit connector B (3P): disconnected

   Test circuits	Connector: Audio unit connector L (3P)
   	Test point 1	Test points 2
   GVIF- to GVIF+, SH GVIF	No. 1	No. 2, No. 3
   GVIF+ to SH GVIF	No. 2	No. 3

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

   Is there continuity between any of the terminals?

   YES 

   There is a short in the wires between the audio unit and the center display unit. Replace the affected shielded harness.

   NO 

   The GVIF wires are not shorted in the wires. Go to step 8.

8. Open wire check (GVIF lines)

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

   Test condition	OFF mode
   	Audio unit connector L (3P): disconnected
   	Center display unit connector B (3P): disconnected

   Test circuit	Test point 1:Audio unit connector L (3P)	Test point 2:Center display unit connector B (3P)
   GVIF-	No. 1	No. 1
   GVIF+	No. 2	No. 2
   SH GVIF	No. 3	No. 3

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

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

   Is there continuity?

   YES 

   The GVIF wires are OK. Go to step 9.

   NO 

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

9. Center display unit check (substitution)

   -1. Substitute a known-good center display unit .

   -2. Reconnect all the connectors, and recheck.

   Does the symptom go away?

   YES 

   Replace the original center display unit.

   NO 

   Replace the audio unit .