( TL19E00J36100000000FAAT16 )

Navigation System Symptom Troubleshooting - Interface dial buttons do not work

1. Check for continuity between navigation unit connector B (32P) terminals No. 23 and No. 25.

Is there continuity?

YES | - | There is a short in the wire. Replace the affected shielded harness.
NO | - | Go to Step 9 .

1. Substitute a known-good interface dial, and recheck.

Is the system OK?

YES | - | Replace the original interface dial. ■
NO | - | Replace the navigation unit. ■