DTC B1780: HandsFreeLink Steering Wheel Switch Line Short
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 Honda Odyssey, 2016 Honda Odyssey, 2015 Honda Odyssey, 2014 Honda Odyssey, and 2013 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Check the vehicle battery condition first (see
BATTERY TEST
).
- Start the engine, and turn the steering wheel back and forth several times.
- Do the HFL Self-Diagnostic Function (see 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.
- Turn the ignition switch to LOCK (0).
- Do the HFL Switch Test (see HFL SWITCH TEST
).
Is the switch OK?
YES -Go to step 5.
NO -Replace the HFL-navigation voice control switch (see HFL SWITCH REMOVAL/INSTALLATION ).
- Disconnect the HandsFreeLink control unit 32P connector.
- Disconnect the HFL-navigation voice control switch 5P connector.
- Check for continuity between HandsFreeLink control unit 32P connector terminal No. 15 and body ground.Fig 1: Checking Continuity Between Handsfreelink Control Unit 32P Connector Terminal 15 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Repair a short to body ground in the wire between the HandsFreeLink control unit, the cable reel, and the HFL-navigation voice control switch.
NO -Replace the HandsFreeLink control unit (see HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION ).