Navigation System DTC Troubleshooting: 2605

DTC 2605:
 H/U Diag: Connect
NOTE:
  1. Turn the ignition switch to LOCK (0), and then back ON (II).
Is Hard Error 2601 indicated?
YES -
Do the 2601 troubleshooting.
NO -
Go to Step 4 .
  1. Select the System Links.
Is the Radio icon red?
YES -
Go to Step 6 .
NO -
Intermittent failure, the system is OK at this time.■
  1. Turn the ignition switch to LOCK (0).
  1. Check for poor connections or loose terminals at audio unit connector C (14P), USB adapter unit connector A (14P), and navigation display 20P connector.
Are there connections OK?
YES -
Go to Step 8 .
NO -
  1. Disconnect audio unit connector C (14P), and navigation display 20P connector.
  1. Connect the audio unit connector C (14P) terminals No. 9 and No. 10 with a jumper wire.

  1. Check for continuity between the navigation display 20P connector terminals No. 3 and No. 13.
Is there continuity?
YES -
Do the audio unit troubleshooting.■
NO -
Repair open in the wire(s) between audio unit and navigation display.■