With Navigation

DTC Troubleshooting: B1780

DTC B1780:

HandsFreeLink steering wheel switch line short (with navigation)

NOTE: Check the vehicle battery condition first Battery Test.

1. Start the vehicle, and turn the steering wheel left and right several times.

2. Do the HFL Self-Diagnostic Function, and check for HFL DTCs.

Is DTC B1780 indicated?

YES -

Go to step 3.

NO -

Intermittent failure, the system is OK at this time.

3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

4. Do the HFL Switch Test HFL Switch Test.

Is the switch OK?

YES -

Go to step 5.

NO -

Replace the audio remote, HFL-navigation voice control switch Overhaul.

5. Remove the center console panel Center Console Panel Removal / Installation.

6. Disconnect the HandsFreeLink control unit 32P connector.

7. Disconnect the audio remote, HFL-navigation voice control switch 12P connector, and connect the cable reel connectors.

8. Check for continuity between HandsFreeLink control unit 32P connector terminal No. 2 and body ground.





Is there continuity?

YES -

Repair a short to body ground in the wire between the switch, the cable reel, and the HandsFreeLink control unit.

NO -

Replace the HandsFreeLink control unit Service and Repair.