Audio System Symptom Troubleshooting - Multi-information display unit does not work

Multi-information display unit does not work 

NOTE: 

• Check the vehicle 12 volt battery condition first .
• Check for B-CAN DTCs and resolve them before troubleshooting.
• Check the connectors for poor connections or loose terminals.

• 1. Problem verification:

  - 1. Turn the vehicle to the ON mode.

  - 2. Check if any MID information appears on the multi-information display unit.

  Is there any information displayed?

  YES 

  Intermittent failure, the system is OK at this time.

  NO 

  The failure is duplicated, go to step 2.

• 2. Fuse check:

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

  - 2. Check the following fuses.

  Fuse	No. A29 (10 A)
  Location	Under-hood fuse/relay box

  Is the fuse OK?

  YES 

  Go to step 3.

  NO 

  Replace the fuse, and recheck. If the fuse blows again, check for a short in the No. A29 (10 A) fuse circuits.

• 3. Open wire check (+B BACK UP line):

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

  Test condition	Vehicle OFF (LOCK) mode
  Test point 1	Multi-information display unit connector A (32P) No. 16
  Test point 2	Body ground

  Is there battery voltage?

  YES 

  The +B BACK UP wire is OK. Go to step 4.

  NO 

  Repair an open in the wire between the No. A29 (10 A) fuse in the under-hood fuse/relay box and the multi-information display unit.

• 4. Open wire check (GND line):

  - 1. Turn the vehicle to the ON mode.

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

  Test condition	Vehicle ON mode
  Test point 1	Multi-information display unit connector A (32P) No. 10
  Test point 2	Body ground

  Is there less than 0.2 V?

  YES 

  Replace the multi-information display unit .

  NO 

  Repair an open in the wire between the multi-information display unit and body ground (G502).