Service Information: Operation: Indicators

WARNING: This page is about a different car, the 2006 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

Indicators are located in various positions within the CCN and are all connected to the CCN electronic circuit board. The door ajar indicator, cargo lamp indicator, high beam indicator, and turn signal indicators operate based upon hard wired inputs to the CCN. The brake indicator is controlled by CAN data bus messages from the Controller Antilock Brake (CAB) as well as by hard wired park brake switch inputs to the CCN. The seatbelt indicator is controlled by the CCN programming, CAN data bus messages from the Occupant Restraint Controller (ORC), and a hard wired seat belt switch input to the CCN. The Malfunction Indicator Lamp (MIL) is normally controlled by CAN data bus messages from the Powertrain Control Module (PCM); however, if the CCN loses CAN data bus communication, the CCN circuitry will automatically turn the MIL on until CAN data bus communication is restored. The CCN uses CAN data bus messages from the Totally Integrated Power Module (TIPM), the ORC, the CAB, and the Sentry Key REmote Entry Module (SKREEM) to control all of the remaining indicators.

The various CCN indicators are controlled by different strategies; some receive fused ignition switch output from the CCN circuitry and have a switched ground, while others are grounded through the CCN circuitry and have a switched battery feed. However, all indicators are completely controlled by the CCN microprocessor based upon various hard wired and electronic message inputs. The cruise indicator located within the VFD unit is dimmable. All other indicators are illuminated at a fixed intensity, which is not affected by the selected illumination intensity of the CCN general illumination LED's. The illumination intensity of the dimmable indicators is synchronized with that of the CCN general illumination LED's.

In addition, certain indicators in this instrument cluster are automatically configured or self-configured. This feature allows the configurable indicators to be enabled by the CCN circuitry for compatibility with certain optional equipment. The CCN defaults for the ABS indicator and airbag indicator are enabled, and these configuration settings must be programmatically disabled in the CCN using a diagnostic scan tool for vehicles that do not have this equipment. The automatically configured or self-configured indicators remain latent in each CCN at all times and will be active only when the CCN receives the appropriate CAN message inputs for that optional system or equipment.

The hard wired indicator inputs may be diagnosed using conventional diagnostic methods. However, the CCN circuitry and CAN/LIN bus message controlled indicators are diagnosed using the CCN self-diagnostic actuator test. Some indicators are requested to be turned on via the LIN bus. (Refer to ELECTRICAL/INSTRUMENT CLUSTER - DIAGNOSIS AND TESTING) and DIAGNOSIS AND TESTING . Proper testing of the CAN/LIN data bus and the electronic message inputs to the CCN that control an indicator requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information. Specific details of the operation for each indicator may be found elsewhere in this service information.