( TL19E00J10300000000FAAT21 )

Audio System Symptom Troubleshooting - Audio system information does not display on the center display unit (without navigation system)

Audio system information does not display on the center display unit (without navigation system)
NOTE:

- Check the vehicle battery condition first.
- Check the connectors for poor connections or loose terminals.

1. Remove the center display unit.

1. Check the connections at the center display unit 12P connector and audio unit connector B (20P).

Are the connectors and terminals connected properly?

YES | - | Go to Step 3 .
NO | - | Repair the connection and recheck.■

1. Turn the ignition switch to ON (II).

1. Measure the voltage between the center display unit 12P connector terminal No. 6 and body ground.

Is there battery voltage?

YES | - | Go to Step 5 .
NO | - | Repair open in the wire between No. 15 (10 A) fuse in the under-hood fuse/relay box and center display unit 12P connector terminal No. 6.■

1. Measure the voltage between the center display unit 12P connector terminal No. 9 and body ground.

Is there less than 0.5 V?

YES | - | Go to Step 6 .
NO | - | Repair open in the wire between the center display 12P connector terminal No. 9 and body ground (G401).■

1. Turn the ignition switch to LOCK (0).

1. Disconnect audio unit connector B (20P) and the center display unit 12P connector.

1. Check for continuity between audio unit connector B (20P) and the center display unit 12P connector according to the table.

   Audio unit connector | Center display unit connector | Wire color
   --- | --- | ---
   B6 | 2 | RED
   B7 | 1 | GRN
   B17 | 4 | BLU

Is there continuity?

YES | - | Go to Step 9 .
NO | - | Repair open in the wire(s) between the audio unit and center display unit.■

1. Check for continuity between the terminals of the center display unit 12P connector and body ground according to the table.

   Center display unit connector | Wire color
   --- | ---
   1 | GRN
   2 | RED
   4 | BLU

Is there continuity?

YES | - | Repair short to body ground in the wire(s) between the audio unit and center display unit.■
NO | - | Go to Step 10 .

1. Check for continuity between the terminals of the audio unit connector B (20P) according to the table.

   From terminal | To terminals
   --- | ---
   B16 (BLK) | B6 (RED), B7 (GRN)

Is there continuity between any of the terminals?

YES | - | Repair short in the wire(s) between the audio unit and center display unit (replace the appropriate shielded harness).■
NO | - | Substitute a known-good center display unit, and recheck. If the symptom/indication goes away, replace the original center display unit. If the symptom is still present, substitute a known-good audio unit, and recheck. If the symptom/indication goes away, replace the original audio unit. ■