Car Status

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

Fig 1: Screen Display - Car Status

Courtesy of AMERICAN HONDA MOTOR CO., INC.

• VSP-Vehicle Speed Pulse from PCM (Navigation unit connector A (8P) terminal No. 6)
  1. OFF (0) when vehicle is not moving
  2. ON (1) when vehicle is moving

  The VSP comes from the 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 taillight relay (Navigation unit connector A (8P) terminal No. 5)
  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 and to trigger the optional rear view camera. This signal is needed because the Speed Pulse has no direction indication.

• ILL CANCEL

  This item detects whether the illumination cancel function is in use.

  1. OFF (0) when the dashlights brightness control button is less than 90% brightness with the headlights turned on.
  2. ON (1) when the dashlights brightness control button is more than 90% brightness with the headlights turned on.

  The illumination cancel signal comes from the HVAC unit. The HVAC unit gets the signal off of B-CAN from the gauge control module and sends it to the Navi ECU using the U-ART communication bus between A/C and Navigation unit connector B (32P) terminal No. 4, No. 20, and No. 21.

• ILL-Illumination Indication (Navigation unit connector B (32P) terminal No. 5)
  1. OFF (0) when parking lights, or headlights are off
  2. ON (1) when parking lights, or headlights are on

  The navigation unit uses the signal to determine whether to put the navigation screen into the Day or Night brightness mode. (Setup screen 1)

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

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