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 (1) are ON. If the value on the display does not match the actual vehicle status, then check the wire carrying the signal.

• VSP-Vehicle Speed Pulse from ECM/PCM (Pin 6 of navigation unit 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 (see the TIRE CALIBRATE  diagnostic screen).

• BACK-Reverse indication from multiplex integrated control unit (A/T) or back-up light switch (M/T) (Pin 5 of navigation unit 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.

• ILL CANCEL

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

  1. OFF (0) if illumination cancel is not selected
  2. ON (1) if illumination cancel is activated

The illumination cancel function is activated by increasing the dash brightness to "MAX" using the "+" button. The CAN bus passes this information from the gauge control module to the navigation unit.

• 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 on

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)

Fig 1: Diagnostic Menu Screen Display - Car Status

Courtesy of AMERICAN HONDA MOTOR CO., INC.