Circuit/System Verification

Auxiliary Audio Input Jack

1. Ignition ON, radio ON.
2. Verify the infotainment system switches to AUX as the audio source with the EL-50334-20  Multi-Media Interface Tester (MIT) connected to the auxiliary audio input jack.
   • If the infotainment system does not switch to AUX as the audio source 

     Refer to Auxiliary Audio Input Malfunction .

   • If the infotainment system switches to AUX as the audio source 
3. Verify DTC B1278 or DTC B1279 is not set.
   • If DTC B1278 or DTC B1279 is set 

     Refer to Circuit/System Testing.

   • If DTC B1278 or DTC B1279 is not set 
4. Verify the audio from the EL-50334-20  Multi-Media Interface Tester (MIT) is heard through the vehicle infotainment system while operating the test tool to begin audio playback.
   • If audio is not heard from the test tool. 

     Refer to Circuit/System Testing.

   • If audio is heard from the test tool. 
5. All OK