Navigation System Symptom Troubleshooting - Picture is missing a color or tone or is an odd color
  1. Check for continuity between the appropriate terminals of navigation unit connector B (32P) and the navigation display unit 28P connector based on the missing color(s).
    Missing color
    Navigation unit connector B (32P)
    Navigation display unit 28P connector
    Blue
    B17
    10, 24
    Green
    B2
    10, 24
    Red
    B1
    10, 24

Is there continuity?
YES -
There is a short to body ground in the circuit between the navigation display unit and the navigation unit. Replace the affected shielded harness.■
NO -
Replace the navigation unit. If the problem is still unresolved, replace the navigation display unit. ■