Navigation cannot control HVAC with voice command

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2014 Honda Ridgeline, 2013 Honda Ridgeline, 2012 Honda Ridgeline, 2011 Honda Ridgeline, and 2010 Honda Ridgeline. 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 ).
Check the connectors for poor connections or loose terminals.
Check for and resolve all CAN DTCs before troubleshooting the navigation system.
Before troubleshooting, make sure you have the anti-theft code for the audio system and navigation system.
After troubleshooting, enter the anti-theft code for the audio system and navigation system.
Verify that the correct navigation unit is installed for this model. Go into the Diagnostic mode and use Version (see SOLAR ANGLE ).
Make sure that the correct navigation DVD color and version are installed.
Check any official Honda service website for more service information about the navigation system.

Turn the ignition switch to ON (II).
Check the navigation system function.
Does the navigation system function normally in all other aspects of operation?

YES -Go to step 3.

NO -Refer to the navigation symptom troubleshooting. Resolve any other problems and then retest the system function. ■
Check the HVAC system function.
Does the HVAC system function normally in all other aspects of operation?

YES -Go to step 4.

NO -Refer to HVAC symptom troubleshooting. Resolve any other problems, then retest the system function. ■
Go into the System Diagnostic Mode (see SYSTEM DIAGNOSTIC MODE ), then select Navi System (see SYSTEM DIAGNOSTIC MODE ).
Is the Air-con icon and link red?

YES -Go to step 5.

NO -Substitute a known-good climate control unit (see CLIMATE CONTROL UNIT REMOVAL/INSTALLATION ), navigation control unit and navigation display control unit one at a time, in this order. Retest the system function after each unit substitution until the problem is resolved, then replace the malfunctioning unit. ■
Disconnect the climate control unit connector (30P) and the navigation unit connector B (32P).

Check for continuity between climate control unit 30P connector and navigation unit connector B (32P) according to the table.

WIRE COLOR REFERENCE

Climate control unit 30P connector terminal	Navigation unit connector B (32P) terminal	Wire color
No. 24	B4	WHT/BLU
No. 25	B21	WHT/BLK
No. 26	B20	WHT/RED

Fig 1: Identifying Navigation Unit Connector B (32P) Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 2: Identifying Navigation Unit Connector (30P) Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity on all wires?

YES -Go to step 7.

NO -Repair an open in the wire(s) between climate control unit and navigation unit connector.

Check for continuity between each wire in the navigation unit connector B (32P) according to the table.

WIRE COLOR REFERENCE

Navigation unit connector B (32P) terminal	Wire color
B4	WHT/BLU
B20	WHT/RED
B21	WHT/BLK

Fig 3: Identifying Navigation Unit Connector B (32P) Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the continuity to any other wire?

YES -Repair short in the affected wire(s) between climate control unit 30P connector and navigation unit connector B (32P). ■

NO -Go to step 8.

Check for continuity between navigation unit connector B (32P) and body ground according to the table.

WIRE COLOR REFERENCE

Navigation unit connector B (32P) terminal	Wire color
B4	WHT/BLU
B20	WHT/RED
B21	WHT/BLK

Fig 4: Identifying Navigation Unit Connector B (32P) Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity to ground on any wire?

YES -Short in the wire(s) between the navigation unit and the body ground. Repair short in the wire(s) between the navigation unit and the climate control unit. ■

NO -Go to step 9.

Turn the ignition switch to ON (II).

Measure the voltage between navigation unit connector B (32P) and body ground according to the table.

WIRE COLOR REFERENCE

Navigation unit connector B (32P) terminal	Wire color
B4	WHT/BLU
B20	WHT/RED
B21	WHT/BLK

Fig 5: Identifying Navigation Unit Connector B (32P) Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there more than 0.2 V to ground on any wire?

YES -Repair short to power on the affected wire(s). ■

NO -Go to step 11.

Substitute a known-good climate control unit (see CLIMATE CONTROL UNIT REMOVAL/INSTALLATION ). Reconnect all connectors, and recheck.
Does the symptom go away?

YES -Replace the original climate control unit (see CLIMATE CONTROL UNIT REMOVAL/INSTALLATION ). ■

NO -Replace the navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ).