Navigation cannot control HVAC by voice command
- Always check for and resolve all CAN DTCs before troubleshooting the navigation system.
- Always check the connectors for poor connections or loose terminals.
- Before troubleshooting, get the navigation system anti-theft codes.
- After troubleshooting, enter the navigation system anti-theft codes.
- Verify that the correct navigation unit is installed for this model. Go into the Diagnostic mode and use Version (see VERSION ).
- Always make sure that the correct DVD color and version are installed.
- Check any official Honda Web site for more service information about the navigation system.
- Connect the HDS to the DLC. Check for B-CAN or F-CAN DTCs in the data list.
Are there any DTCs in the B-CAN or F-CAN systems?
YES - Troubleshoot and repair all CAN related DTCs, and then retest.
NO - Go to step 2.
- Go into the diagnostic mode and use the NAVI SYSTEM LINK diagnostic (see
) to check the A/C.
Is the A/C icon red?
YES - Go to step 3.
NO -Substitute a known-good climate control unit, and recheck. If the symptom/indication goes away, replace the original climate control unit. If the symptom/indication does not go away, replace the navigation unit.
- Disconnect climate control unit connector B (16P) and navigation unit connector A (20P).
- Check for continuity between climate control unit connector B (16P) and navigation unit connector A (20P) according to the table.CONNECTORS REFERENCE
Climate control unit connector B (16P) terminal Navigation control unit connector A (20P) terminal Wire color No. 1 No. 14 RED No. 9 No. 15 BLU No. 10 No. 4 YEL Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity on all wires?
YES - Go to step 5.
NO - Repair open in the affected wire(s) between climate control unit connector B (16P) and navigation unit connector A (20P).
- Check for continuity between each wire in the navigation unit connector A (20P) according to the table.CONNECTORS REFERENCE
Navigation control unit connector A (20P) terminal Wire color No. 4 YEL No. 14 RED No. 15 BLU 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 connector B (17P) and navigation unit connector A (20P).
NO - Go to step 6.
- Check for continuity between navigation unit connector A (20P) and body ground according to the table.CONNECTORS REFERENCE
Navigation control unit connector A (20P) terminal Wire color No. 4 YEL No. 14 RED No. 15 BLU - Turn the ignition switch to ON (II).
- Measure the voltage between navigation unit connector A (20P) No. 4, No. 14, and No. 15 terminals and body ground.CONNECTORS REFERENCE
Navigation control unit connector A (20P) terminal Wire color No. 4 YEL No. 14 RED No. 15 BLU 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 9.
- Substitute and a known-good climate control unit. Reconnect all connectors and retest.
Does the symptom go away?
YES - Replace the original climate control unit.
NO - Replace the navigation unit.