Honda CR-V: System Description
Overview
The audio unit acts as the "processor" for all audio functions. Select audio functions from the audio unit, the audio remote (on the steering wheel), or by using the navigation voice control system. The audio display provides the current audio status. For vehicles with navigation, additional audio information is available by touching the audio button on the Navigation Audio Screen. (See the owner's manual and the navigation system manual for more details.) The XM receiver and audio disc changer passes its signal to the audio unit. In addition, it communicates with the audio unit via the GA-Net bus. Any open connections in the GA-Net bus circuit will cause audio and navigation functions to appear inoperative.
For vehicles with navigation, pressing the "open/close" switch on the navigation display panel allows access to the CD slot and PC card.
A security signal is daisy-chained between the audio and vehicle components for integration into the vehicle's security system.
Speed-sensitive volume compensation (SVC)
Some audio systems are equipped with speed-sensitive volume compensation (SVC). The navigation or audio unit receives the vehicle speed pulse (VSP) from the ECM/PCM. The system processes the speed input and increases the navigation or audio system volume level as the vehicle speed increases to compensate for the various interior noise that occurs at higher speeds. When the vehicle slows down, the volume returns to its normal level. The SVC has four settings: SVC OFF, LOW, MID and HIGH that can be adjusted using the navigation or audio unit. The SVC comes from the factory with MID set as the default.
To change the audio unit SVC setting, press the "tune folder sound" knob repeatedly until the SVC is displayed, then rotate the knob to adjust the SVC to the desired setting (SVC OFF, LOW, MID, or HIGH) To change the navigation unit SVC setting, press the AUDIO button, and then select the SOUND icon on the navigation display. Press the navigation display to select the desired setting (OFF, LOW, MID, HI)
The navigation system allows voice control for the audio, XM, PC card, and CD player. The GA-Net (audio unit) communicates the voice control commands. When using the TALK/BACK button, the audio is muted on all speakers and you hear navigation sound on the front channels. When using the navigation or route guidance (RG), the front speakers provides the navigation sound and the rear speakers continue to play. For more information, see the navigation section. The outline of the interruption function is shown in this table.
GA-Net Bus Configuration
The GA-Net bus passes audio and navigation commands throughout the navigation and audio components.
These commands include navigation touch screen and hard button signals, audio/XM selections by voice, and XM station and music title names. Because the entire bus is daisy-chained between components (see diagram); any open or short in the GA-Net bus harness will cause any or all of these functions to become inoperative. The addition of any audio accessory must maintain the continuity of the GA-Net bus by installing the "Y" cable included with the accessory kit.
With navigation
NOTE: All items may not apply to this vehicle. See the owner's manual for more information.
Audio Glossary
Audio Glossary
Audio Glossary
Audio Unit Connector for Inputs and Outputs
With navigation
Without navigation, with XM radio
Without navigation, 1 DIN audio unit type
Audio Unit Connector A (17P)
With navigation
Without navigation
Audio Unit Connector B (22P) (with navigation)
With navigation
Audio Unit Connector B (20P) (without navigation)
Without navigation
Audio Unit Connector C (12P)
With navigation
Audio Unit Connector E (14P)
With navigation (USA, EX-L model)
Without navigation (USA, EX-L model)
Audio Unit Connector G (3P)
All models
Stereo Amplifier Connector for Inputs and Outputs (With navigation)
XM Receiver Connector for Inputs and Outputs
With navigation
Without navigation
Audio Disc Changer Connector for Inputs and Outputs (With navigation)
Auxiliary Jack Assembly Connector for Inputs and Outputs
With navigation
Without navigation
* 1: LX model
* 2: Except LX model
Circuit Diagram
With Navigation
With Navigation
Without Navigation
Without Navigation, with Audio
READ NEXT:
Self-diagnostic Function
Without Navigation
The audio system has a self-diagnostic function. To run the self-diagnostic
function, do the following:
How to check for audio system condition
NOTE: The audio unit must be in the
Poor AM or FM radio reception or
interference (with navigation)
NOTE:
Check the radio reception in an open area.
Compare it to a known-good vehicle of the same
model, year, and trim level whenever possible.
If necessary, have the customer demonstrate the
sym
SEE MORE:
Trim Removal/Installation
Trim Removal/Installation-Door Areas
Special Tools Required
KTC trim tool set SOJATP2014 *
* Available through the American Honda Tool and
Equipment Program; call 888-424-6857
SRS components are located in this area. Review the
SRS component locations and the
precautions and procedures before
doin
DTC P0712: Short in ATF Temperature Sensor
Circuit
NOTE:
Before you troubleshoot, record all freeze data and any on-board
snapshot, and review General Troubleshooting Information.
This code is caused by an electrical circuit problem
and cannot be caused by a mechanical problem in the
transmission.
1. Check the ATF temperature sensor voltage
