Car Status

WARNING: This page is about a different car, the 2005 Acura TSX and 2004 Acura TSX. However, it is still accessible from the selected car via links, so may be relevant.

Use this screen to confirm that the navigation unit is properly receiving input signals. Signals equal to (0) are OFF, and signals equal to (1) are ON. If the value on the display does not match the actual vehicle status, then check the wire carrying the signal.

CHG-(OBSELETE-NOT USED) Charge indicator (Pin 3 of C-connector)
1. OFF (0) when engine is off, or alternator is not charging
2. ON (1) when engine is running

This signal was used by the previous DVD navigation system. If CHG was off, then the screen was shut off after 10 minutes of inactivity to minimize battery consumption.

VSP-Vehicle Speed Pulse from ECM/PCM (Pin 6 of C-connector)
1. OFF (0) when vehicle is not moving
2. ON (1) when vehicle is moving

The VSP comes from the ECM/PCM as a dedicated signal. Internally, the navigation unit compares the actual VP on the map against street data to adjust the pulse to speed scaling factor. As this scaling factor becomes more accurate, the "Level" gradually increases from 0 to 10.

BACK-Reverse indication from tail light relay (Pin 5 of C-connector)
1. OFF (0) when shift lever is in any position other than reverse
2. ON (1) when shift lever is in reverse

The Back signal is used by the navigation unit to allow the map screen to show the VP moving backwards when in reverse. This signal is needed because the Speed Pulse has no direction indication.

CHG (CAN)-Charge indicator from ECM/PCM using F-CAN bus (Pin 8,18 of navigation unit A-connector)
1. OFF (0) when engine is off
2. ON (1) when engine is running

This signal is obtained off of the F-CAN bus. For problems, see the service manual section for troubleshooting F-CAN. Diagnostic trouble codes (DTCs) for the F-CAN can be retrieved with a HDS (Honda Diagnostic System).

ILL-Illumination Indication
(Pin 5 of navigation unit A-connector)
1. OFF (0) when parking lights, or headlights are off
2. ON (1) when parking lights, or headlights are off

This signal is used by the navigation unit to determine whether to put the navigation screen into the Day or Night brightness mode. (Setup screen 1)

DVD Lid-senses if DVD door is open
1. (Close) when door is closed
2. (Open) when door is open

The navigation unit has a micro switch to detect this. If open is indicated when the door is closed, replace the navigation unit.

PC Card Lid-Senses if PC Card door is open
1. (Close) when door is closed
2. (Open) when door is open

The navigation unit has a micro switch to detect this. If open is indicated when the door is slid shut, then replace the navigation unit. This slot is for insertion of PC Flash memory cards for gathering diagnostic information. This is for factory use only.

Fig 1: Navigation Screen Display - Car Status