ZDX V6-3.7L (2010)
Network "Loss of Communication" Error Checking Function
The ECUs on the CAN circuit send messages to each other. If there are any communication malfunctions on the network, the multi information display
(MID) on the gauge control module can indicate the error messages by entering the gauge control module self-diagnostic function See: Instrument
Panel, Gauges and Warning Indicators/Instrument Cluster / Carrier/Testing and Inspection/Initial Inspection and Diagnostic Overview.
Self-Diagnostic Function (On-board diagnosis)
By connecting the HDS to the data link connector (DLC), the HDS can retrieve the diagnostic information from the driver's MICU via a diagnostic line
called the K-LINE. The K-LINE is a separate communication line from the CAN lines, but it is connected to most of the CAN related ECUs. The driver's
MICU is a gateway between the HDS and B-CAN related ECUs, and sends B-CAN diagnostic information to the HDS. When doing a function test with
the HDS, the HDS sends an output signal through the K-LINE to the driver's MICU. The driver's MICU either relays the request to another ECU, or
commands the function itself.
