Ford Mustang Service Manual: Instrument Cluster Self-Diagnostic Mode

Principles of Operation

NOTE: A new instrument cluster must be reconfigured. Refer to Section.

The instrument cluster is a hybrid electronic cluster (HEC). The instrument cluster uses both hardwired and the standard corporate protocol (SCP) communication network to transmit and receive information. As a technician it is very important to understand:

  • where the input originates from.
  • all 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 SCP network to another module?
  • which module controls the output of the feature.

The instrument cluster carries out a display prove-out to verify that the warning/indicator miniature bulbs for monitored systems are functioning correctly. When the ignition switch is in the ON position with the engine off, the following warning indicators will prove out:

  • anti-lock brake (ABS) warning indicator
  • air bag warning indicator
  • BRAKE warning indicator
  • charging system indicator
  • fail safe cooling warning indicator
  • low coolant level indicator
  • low fuel warning indicator
  • traction control indicator
    Inspection and Verification
    Principles of Operation NOTE: A new instrument cluster must be reconfigured. Refer to Section. The instrument cluster is a hybrid electronic cluster (HEC). The instrument cluster uses both hardw ...

    Pinpoint Tests
    Principles of Operation NOTE: A new instrument cluster must be reconfigured. Refer to Section. The instrument cluster is a hybrid electronic cluster (HEC). The instrument cluster uses both hardw ...

    Other materials:

    Installation
    Removal Both mounts 1. Disconnect the battery ground cable. For additional information, refer to Section. 2. Remove the coolant bypass tube. For additional information, refer to Section. 3. Rotate the drive belt tensioner clockwise and detach the drive belt ...

    Unique Calibration
    Vehicle Identification Number (VIN) Locator The vehicle identification number (VIN) is a seventeen-digit alphanumeric code. The VIN is stamped on a metal tab riveted to the instrument panel, top upper left of the dash. The VIN number is also found on the v ...

    Assembly
    Disassembly 1. Remove the driveshaft (4602). For additional information, refer to Driveshaft in this section. 2. CAUTION: Under no circumstances is the driveshaft assembly to be clamped in the jaws of a vise or similar holding fixture. Denting or localizing ...