Audio System - Interface dial and center switch panel buttons do not work(Without Navigation) (2019 2020 2021 2022)

Interface dial and center switch panel buttons do not work

Check the vehicle battery condition first .
Check the connectors for poor connections or loose terminals.

Problem verification
-1. Turn the vehicle to the ON mode.

-2. Check if the center display operates by using the interface dial and the center switch panel hard buttons.

Do the interface dial and the center switch panel hard buttons workΩ

YES

Intermittent failure, the system is OK at this time.

NO

The failure is duplicated, go to step 2.

Open wire check (ACC/RR CAMERA ACC DIODE line)

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

-2. Disconnect the following connector.

Center switch panel/interface dial 7P connector

-3. Turn the vehicle to the ON mode.

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

Test condition	Vehicle ON mode
	Center switch panel/interface dial 7P connector: disconnected
Test circuit	ACC/RR CAMERA ACC DIODE
Test point 1	Center switch panel/interface dial 7P connector No. 1 (YEL)
Test point 2	Body ground

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

Is there battery voltage?

YES

The ACC/RR CAMERA ACC DIODE wire is OK. Go to step 3.

Repair an open in the wire.

Open wire check (GND line)

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

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

Test condition	Vehicle OFF (LOCK) mode
	Center switch panel/interface dial 7P connector: disconnected
Test circuit	GND
Test point 1	Center switch panel/interface dial 7P connector No. 6 (BLK)
Test point 2	Body ground

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

Is there continuity?

YES

The GND wire is OK. Go to step 4.

Repair an open in the wire or poor ground (G502).

Shorted wire check (JOG line)

-1. Disconnect the following connector.

Audio unit connector F (18P)

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

Test condition	Vehicle OFF (LOCK) mode
	Center switch panel/interface dial 7P connector: disconnected
	Audio unit connector F (18P): disconnected
Test circuit	JOG
Test point 1	Center switch panel/interface dial 7P connector No. 4 (WHT)
Test point 2	Body ground

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

Is there continuity?

YES

There is a short to body ground in the wire. Replace the affected shielded harness.

The JOG wire is not shorted to ground. Go to step 5.

Shorted wire check (JOG SH line to JOG line)

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

Test condition	Vehicle OFF (LOCK) mode
	Center switch panel/interface dial 7P connector: disconnected
	Audio unit connector F (18P): disconnected
Test circuit	JOG SH, JOG
Test point 1	Center switch panel/interface dial 7P connector No. 4 (WHT)
Test point 2	Center switch panel/interface dial 7P connector No. 5 (BLK)

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

Is there continuity?

YES

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

The JOG SH and the JOG wires are not shorted. Go to step 6.

Open wire check (JOG line)

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

Test condition	Vehicle OFF (LOCK) mode
	Center switch panel/interface dial 7P connector: disconnected
	Audio unit connector F (18P): disconnected
Test circuit	JOG
Test point 1	Audio unit connector F (18P) No. 16 (WHT)
Test point 2	Center switch panel/interface dial 7P connector No. 4 (WHT)

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

Is there continuity?

YES

The JOG wire is OK. Go to step 7.

There is an open in the wire. Replace the affected shielded harness.

Center switch panel/interface dial check
-1. Substitute a known-good center switch panel/interface dial .

-2. Reconnect all the connectors, and recheck.

Does the symptom go away?

YES

Replace the original center switch panel/interface dial.

NO

Replace the audio unit .