With Navigation System

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2015 Honda Crosstour, 2014 Honda Crosstour, 2013 Honda Crosstour, 2012 Honda Crosstour, and 2011 Honda Accord Crosstour. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the audio-HVAC subdisplay unit 12P connector.
Turn the ignition switch to ON (II).
Measure the voltage between audio-HVAC subdisplay unit 12P connector terminal No. 2 and body ground.

Fig 1: Measuring Voltage Between Audio-HVAC Subdisplay Unit 12P Connector Terminal No. 2 And Body Ground

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Turn the ignition switch to LOCK (0).
Disconnect climate control unit connector A (28P).
Check for continuity between the following terminals of climate control unit connector A (28P) and the audio-HVAC subdisplay unit 12P connector.
28P: 12P:

No. 23 No. 11

No. 24 No. 12

Fig 2: Checking For Continuity Between Following Terminals Of Climate Control Unit Connector A (28P) And Audio-HVAC Subdisplay Unit 12P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 7.

NO -Repair an open in the wire between the climate control unit and the audio-HVAC subdisplay unit.
Check for continuity between body ground and climate control unit connector A (28P) terminals No. 23 and No. 24 individually.

Fig 3: Checking For Continuity Between Body Ground And Climate Control Unit Connector A (28P) Terminals No. 23 And No. 24 Individually
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair a short to body ground in the wire between the climate control unit and the audio-HVAC subdisplay unit.

NO -Go to step 8.
Reconnect climate control unit connector A (28P).
Connect the audio-HVAC subdisplay unit 12P connector terminals No. 11 and No. 12 with a jumper wire.

Fig 4: Connecting Audio-Hvac Subdisplay Unit 12P Connector Terminals No. 11 And No. 12 With Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch to ON (II).
Press and hold both the WINDOWSHIELD DEFROSTER button and the ON/OFF button.
Check the WINDSHIELD DEFROSTER button LED.
Is the LED blinking?

YES -Audio-HVAC subdisplay unit is faulty, replace the audio-HVAC subdisplay unit (see AUDIO-HVAC SUBDISPLAY UNIT REMOVAL/INSTALLATION ).

NO -Climate control unit is faulty, replace the climate control unit (see CLIMATE CONTROL UNIT REMOVAL/INSTALLATION ).