DTC 2: HandsFreeLink Steering Wheel Switch Failure

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 2 (MIC<->HFT Unit NG) 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 switch (see HFL SWITCH REMOVAL/INSTALLATION ).
Disconnect the HandsFreeLink control unit 32P connector.
Disconnect the HFL 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 switch.

NO -Go to step 8.
Turn the ignition switch to ON (II).
Measure the voltage between HFL switch 5P connector terminal No. 4 and body ground.

Fig 2: Measuring Voltage Between HFL Switch 5P Connector Terminal 4 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there voltage?

YES -Repair a short to power in the wire between the HFL switch, the cable reel, and the HandsFreeLink control unit.

NO -Go to step 10.
Turn the ignition switch to LOCK (0).
Check for continuity between HandsFreeLink control unit 32P connector terminal No. 15 and HFL switch 5P connector terminal No. 4.

Fig 3: Checking Continuity Between Handsfreelink Control Unit 32P Connector Terminal 15 And HFL Switch 5P Connector Terminal 4
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 12.

NO -Repair an open in the wire between the switch, the cable reel, and the HandsFreeLink control unit.
Turn the ignition switch to ON (II).
Measure the voltage between HandsFreeLink control unit 32P connector terminal No. 15 and body ground.

Fig 4: Measuring Voltage Between Handsfreelink Control Unit 32P Connector Terminal 15 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there voltage?

YES -Repair a short to power in the wire between the HandsFreeLink control unit and the HFL switch.

NO -Go to step 14.
Turn the ignition switch to LOCK (0).
Check for continuity between HFL switch 5P connector terminal No. 2 and body ground.

Fig 5: Checking Continuity Between HFL Switch 5P Connector Terminal 2 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Replace the HandsFreeLink control unit (see HANDSFREELINK CONTROL UNIT REMOVAL/INSTALLATION ).

NO -Repair open in the wire between the HFL switch, the cable reel, and the audio-navigation unit.