Circuit/System Testing

Auxiliary Audio Input Jack

1. Ignition OFF, disconnect the X1 harness connector at the X83 Auxiliary Audio Input. Ignition ON, radio ON.
2. Test for 2.5 - 3.5 V between the signal circuit terminal 5 and ground.
   • If less than 2.5 V 
   1. Ignition OFF, disconnect the X1 harness connector at the A11 Radio.
   2. Test for infinite resistance between the signal circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
   3. Test for less than 2 Ω in the signal circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the A11 Radio.
   • If greater than 3.5 V 
   1. Ignition OFF, disconnect the X1 harness connector at the A11 Radio, ignition ON.
   2. Test for less than 1 V between the signal circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the A11 Radio.
   • If between 2.5 - 3.5 V 
3. Test for less than 1 V between the signal circuits listed below and ground:
   • Left auxiliary audio signal circuit terminal 1
   • Right auxiliary audio signal circuit terminal 2
   • Auxiliary audio common signal circuit terminal 3
   • If 1 V greater 
   1. Ignition OFF, disconnect the X1 harness connector at the A11 Radio. Ignition ON.
   2. Test for less than 1 V between the signal circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the A11 Radio.
   • If less than 1 V 
4. Ignition OFF, disconnect the X1 harness connector at the A11 Radio.
5. Test for infinite resistance between the signal circuits listed below and ground:
   • Auxiliary audio common signal circuit terminal 23
   • Left auxiliary audio signal circuit terminal 24
   • Right auxiliary audio signal circuit terminal 10
   • If less than infinite resistance 

     Repair the short to ground on the circuit.

   • If infinite resistance 
6. Test for less than 5 Ω between the signal circuit terminals listed below:
   • A11 Radio terminal 24 X1 and the X83 Auxiliary Audio Input terminal 1 X1
   • A11 Radio terminal 10 X1 and the X83 Auxiliary Audio Input terminal 2 X1
   • A11 Radio terminal 23 X1 and the X83 Auxiliary Audio Input terminal 3 X1
   • If 5 Ω greater 

     Repair the open/high resistance in the circuit.

   • If less than 5 Ω 
7. Replace the X83 Auxiliary Audio Input. Connect all harness connectors.
8. Connect and operate the EL-50334-20  Multi-Media Interface Tester (MIT).
9. Verify the audio from the test tool is heard through the vehicle infotainment system.
   • If audio is not heard from the test tool 

     Replace the A11 Radio.

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

USB Port

1. Ignition OFF, disconnect the USB cable connection at the A11 Radio.
NOTE:

USB cables and adapters for the following tests are found in the EL-50334-50  USB Cable and Adapter Kit.

2. Connect the EL-50334-2 Type A female to Mini B male USB Cable to the A11 Radio.
3. Connect the EL-50334-20  Multi-Media Interface Tester (MIT) to the EL-50334-2 cable. Ignition ON, radio ON.
4. Verify the infotainment system switches to USB as the audio source.
   • If the infotainment system does not switch to USB as the audio source 

     Replace the A11 Radio.

   • If the infotainment system switches to USB as the audio source 
5. Ignition OFF, connect the vehicle USB cable to the A11 Radio. Disconnect the USB cable at the X83 Auxiliary Audio Input.
NOTE:

The EL-50334 - 4 adapter may be required for the following test.

6. Connect the EL-50334-20  Multi-Media Interface Tester (MIT) to the vehicle USB cable. Ignition ON, radio ON.
7. Verify the infotainment system switches to USB as the audio source.
   • If the infotainment system does not switch to USB as the audio source 

     Replace the USB cable assembly.

   • If the infotainment system switches to USB as the audio source 
8. Test or replace the X83 Auxiliary Audio Input.