Circuit/System Verification

Display RPO UFD

1. Ignition ON, radio ON,
2. Verify the info display turns on and information is shown on the display.
   • If the info display module does not turn on, or information is not shown in the display. 

     Refer to Radio Information Display Malfunction (Monochrome Display)  or Radio Information Display Malfunction (Color Display) 

   • If the info display turns on and information is shown on the display. 
3. Verify that all radio controls operate and perform the correct function.
   • If some, or all, of the radio controls do not operate normally. 

     Replace the A22 Radio Controls.

   • If all radio controls operate and perform the correct function. 
4. All OK.

Display RPO UAG

1. Ignition ON, A11 Radio ON.
2. Verify that all radio controls operate and perform the correct function.
   • If some, but not all, controls operate normally. 

     Replace the A22 Radio Controls.

   • If all controls are inoperative. 

     Refer to Circuit/System Testing below.

   • If all radio controls operate and perform the correct function. 
3. All OK.