Audio System - CarPlay and Android Auto unit does not work(Without Navigation) (2019 2020 2021 2022)

CarPlay and Android Auto unit does not work 

NOTE: 

• Check the vehicle battery condition first .
• Refer to the Owner's Manual for smartphone connection methods.
• Make sure the client's smartphone is approved and configured correctly.
• See if you can duplicate the symptom in a known-good vehicle under the same conditions. If you can, it is probably a characteristic of the system.
• Check the connectors for poor connections or loose terminals.

1. System Diagnostic Mode check 1

   -1. Go into the System Diagnostic Mode, and use the System Links to check the Carplay Box icon status .

   Is the Carplay Box icon green?

   YES 

   Go to step 3.

   NO 

   Go to step 2.

2. System Diagnostic Mode check 2

   -1. Go into the System Diagnostic Mode, and use the Carplay Box to check the CP/AA Connection status .

   Is the CP/AA Connection OK?

   YES 

   The HDMI circuit is faulty. Replace the affected shielded harness.

   NO 

   Go to step 5.

3. System Diagnostic Mode check 2

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

   -2. Connect a known-good USB device to the USB port.

   -3. With the USB device connecting, go into the System Diagnostic Mode, and use the System Links to check the USB icon status .

   Is the USB icon green?

   YES 

   Go to step 9.

   NO 

   Go to step 4.

4. Open wire check (USB OTG lines)

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

   -2. Disconnect the following connector.

   CarPlay and Android Auto unit connector C (5P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	CarPlay and Android Auto unit connector C (5P): disconnected

   Test circuit	Test point 1:CarPlay and Android Auto unit connector C (5P)	Test point 2:USB port 5P connector(female terminals):
   USB OTG VBUS	No. 2	No. 1
   USB OTG DATA+	No. 3	No. 3
   USB OTG DATA-	No. 4	No. 2
   USB OTG GND	No. 1	No. 4

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

   Is there continuity?

   YES 

   Replace the CarPlay and Android Auto unit .

   NO 

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

5. Open wire check (+B AUDIO(ODMD) line)

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

   -2. Disconnect the following connector.

   CarPlay and Android Auto unit connector A (20P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	CarPlay and Android Auto unit connector A (20P): disconnected
   Test point 1	CarPlay and Android Auto unit connector A (20P) No. 10
   Test point 2	Body ground

   Is there battery voltage?

   YES 

   The +B AUDIO(ODMD) wire is OK. Go to step 6.

   NO 

   Repair an open in the wire.

6. Open wire check (GND line)

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

   Test condition	Vehicle OFF (LOCK) mode
   	CarPlay and Android Auto unit connector A (20P): disconnected
   Test point 1	CarPlay and Android Auto unit connector A (20P) No. 9
   Test point 2	Body ground

   Is there continuity?

   YES 

   The GND wire is OK. Go to step 7.

   NO 

   Repair an open in the wire or poor ground (G504).

7. Open wire check (SWD+B line)

   -1. Turn the vehicle to the ON mode.

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

   Test condition	Vehicle ON mode
   	CarPlay and Android Auto unit connector A (20P): disconnected
   Test point 1	CarPlay and Android Auto unit connector A (20P) No. 8
   Test point 2	Body ground

   Is there battery voltage?

   YES 

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

   NO 

   Repair an open in the wire.

8. Open wire check (CP/AA USB lines)

   -1. Disconnect the following connectors.

   Audio unit connector K (5P)

   CarPlay and Android Auto unit connector D (5P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Audio unit connector K (5P): disconnected
   	CarPlay and Android Auto unit connector A (20P): disconnected
   	CarPlay and Android Auto unit connector D (5P): disconnected

   Test point 1:Audio unit connector K (5P)	Test point 1:CarPlay and Android Auto unit connector D (5P)
   No. 1	No. 1
   No. 3	No. 3
   No. 4	No. 4

   Is there continuity?

   YES 

   Replace the CarPlay and Android Auto unit .

   NO 

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

9. Shorted wire check (CP/AA SIRI RG lines) 1

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

   -2. Disconnect the following connectors.

   Audio unit connector H (16P)

   CarPlay and Android Auto unit connector A (20P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Audio unit connector H (16P): disconnected
   	CarPlay and Android Auto unit connector A (20P): disconnected
   Test point 1	Audio unit connector H (16P) No. 13

   Test point 2

   Body ground

   Test point 1	Audio unit connector H (16P) No. 14
   Test point 2	Body ground

   Is there continuity?

   YES 

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

   NO 

   The CP/AA SIRI RG+ and CP/AA SIRI RG- wires are not shorted to ground. Go to step 10.

10. Shorted wire check (CP/AA SIRI RG lines) 2

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

    Test condition	Vehicle OFF (LOCK) mode
    	Audio unit connector H (16P): disconnected
    	CarPlay and Android Auto unit connector A (20P): disconnected

    Test point 1:  Audio unit connector H (16P)	Test point 2:  Audio unit connector H (16P)
    No. 5	No. 13, No. 14
    No. 13	No. 14

    Is there continuity between any of the terminals?

    YES 

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

    NO 

    The CP/AA SIRI RG wires are not shorted. Go to step 11.

11. Open wire check (CP/AA SIRI RG+, CP/AA SIRI RG- lines)

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

    Test condition	Vehicle OFF (LOCK) mode
    	Audio unit connector H (16P): disconnected
    	CarPlay and Android Auto unit connector A (20P): disconnected
    Test point 1	Audio unit connector H (16P) No. 13
    Test point 2	CarPlay and Android Auto unit connector A (20P) No. 14

    Test point 1	Audio unit connector H (16P) No. 14
    Test point 2	CarPlay and Android Auto unit connector A (20P) No. 13

    Is there continuity?

    YES 

    The CP/AA SIRI RG+ and CP/AA SIRI RG- wires are OK. Go to step 12.

    NO 

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

12. Shorted wire check (CP/AA MIC lines) 1

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

    Test condition	Vehicle OFF (LOCK) mode
    	Audio unit connector H (16P): disconnected
    	CarPlay and Android Auto unit connector A (20P): disconnected
    Test point 1	Audio unit connector H (16P) No. 3
    Test point 2	Body ground

    Test point 1

    Audio unit connector H (16P) No. 12

    Test point 2

    Body ground

    Is there continuity?

    YES 

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

    NO 

    The CP/AA MIC and CP/AA MIC GND wires are not shorted to ground. Go to step 13.

13. Shorted wire check (CP/AA MIC lines) 2

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

    Test condition	Vehicle OFF (LOCK) mode
    	Audio unit connector H (16P): disconnected
    	CarPlay and Android Auto unit connector A (20P): disconnected

    Test point 1:  Audio unit connector H (16P)	Test point 2:  Audio unit connector H (16P)
    No. 4	No. 3, No. 12
    No. 3	No. 12

    Is there continuity between any of the terminals?

    YES 

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

    NO 

    The CP/AA MIC wires are not shorted. Go to step 14.

14. Open wire check (CP/AA MIC, CP/AA MIC GND lines)

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

    Test condition	Vehicle OFF (LOCK) mode
    	Audio unit connector H (16P): disconnected
    	CarPlay and Android Auto unit connector A (20P): disconnected
    Test point 1	Audio unit connector H (16P) No. 3
    Test point 2	CarPlay and Android Auto unit connector A (20P) No. 5

    Test point 1	Audio unit connector H (16P) No. 12
    Test point 2	CarPlay and Android Auto unit connector A (20P) No. 15

    Is there continuity?

    YES 

    The CP/AA MIC and CP/AA MIC GND wires are OK. Go to step 15.

    NO 

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

15. Shorted wire check (CP/AA MAIN lines) 1

    -1. Check for continuity between the following test points and body ground individually.

    Test condition	Vehicle OFF (LOCK) mode
    	Audio unit connector H (16P): disconnected
    	CarPlay and Android Auto unit connector A (20P): disconnected

    Connector	Terminal
    Audio unit connector H (16P)	No. 7
    	No. 8
    	No. 15
    	No. 16

    Is there continuity?

    YES 

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

    NO 

    The CP/AA MAIN wires are not shorted to ground. Go to step 16.

16. Shorted wire check (CP/AA MAIN lines) 2

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

    Test condition	Vehicle OFF (LOCK) mode
    	Audio unit connector H (16P): disconnected
    	CarPlay and Android Auto unit connector A (20P): disconnected

    Test point 1:  Audio unit connector H (16P)	Test point 2:  Audio unit connector H (16P)
    No. 6	No. 7, No. 8, No. 15, No. 16
    No. 7	No. 8, No. 15, No. 16
    No. 8	No. 15, No. 16
    No. 15	No. 16

    Is there continuity?

    YES 

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

    NO 

    The CP/AA MAIN wires are not shorted. Go to step 17.

17. Open wire check (CP/AA MAIN lines)

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

    Test condition	Vehicle OFF (LOCK) mode
    	Audio unit connector H (16P): disconnected
    	CarPlay and Android Auto unit connector A (20P): disconnected

    Test point 1:  Audio unit connector H (16P)	Test point 2:  CarPlay and Android Auto unit connector A (20P)
    No. 7	No. 11
    No. 8	No. 1
    No. 15	No. 2
    No. 16	No. 12

    Is there continuity?

    YES 

    The CP/AA MAIN wires are OK. Go to step 18.

    NO 

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

18. CarPlay and Android Auto unit check

    -1. Substitute a known-good CarPlay and Android Auto unit .

    -2. Reconnect all the connectors, and recheck.

    Does the symptom go away?

    YES 

    Replace the original CarPlay and Android Auto unit.

    NO 

    Replace the audio unit .