Service Park Assist Indicator - Operation

OPERATION

The service park assist indicator gives an indication to the vehicle operator when the park assist module has recorded a Diagnostic Trouble Code (DTC) for a front or rear park assist system circuit or component malfunction. This indicator is controlled by the instrument cluster logic circuit based upon cluster programming and electronic messages received by the cluster from the park assist module over the Controller Area Network (CAN) data bus.

The service park assist indicator function of the reconfigurable dot matrix Organic Light Emitting Diode (OLED) display unit is completely controlled by the instrument cluster logic circuit, and that logic will only allow this indicator to operate when the instrument cluster receives a battery current input on the fused ignition switch output (run-start) circuit. Therefore, the OLED service park assist indication will always be OFF when the ignition switch is in any position except ON or START. The instrument cluster will turn ON the service park assist indicator for the following reasons:

- Service Park Assist Indicator Lamp-On Message - Each time the cluster receives an electronic service park assist indicator lamp-ON message from the park assist module, the service park assist indicator will be illuminated. The indicator remains illuminated for between three and five seconds, until the cluster receives a lamp-OFF message from the park assist module, until the cluster arbitrator logic determines that another display request has priority, or until the ignition switch is turned to the OFF position, whichever occurs first.

The park assist module continually monitors the front and rear park assist system circuits and components to determine the condition of the system. The park assist module then sends the proper lamp-ON or lamp-OFF message to the instrument cluster, also known as the Cab Compartment Node (CCN).

For proper diagnosis of the front or rear park assist systems, the park assist module, the CCN, the CAN data bus or the electronic communication related to service park assist indicator operation a diagnostic scan tool is required. Refer to the appropriate diagnostic information.