Principles of Operation: Notes
WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
When installing a new instrument cluster, it is necessary to upload the module configuration to the scan tool. Following installation of the instrument cluster, download the module configuration from the scan tool into the new instrument cluster. Refer to MODULE CONFIGURATION
. It is also necessary to carry out a parameter reset procedure whenever a new instrument cluster or PCM is installed. Refer to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS)
.
The instrument cluster is a hybrid electronic cluster (HEC) that utilizes a microprocessor to control the gauge and indicator functions. Data is sent to the instrument cluster over the high speed controller area network (HS-CAN), the medium speed controller area network (MS-CAN) bus lines and through hardwired circuitry from individual components. The instrument cluster uses each input to output an action to the gauges or indicators.
It is very important to understand:
- where the input originates.
- all the information necessary in order for a feature to operate.
- which module(s) receive(s) the input or command message.
- does the module which received the input control the output of the feature, or does it output a message over the communication network to another module.
- which module controls the output of the feature.