Radio Receiver Module (RRM)

Inputs:

• RRM Mode status
• Dead reckoning information
• GPS data
• GPS antenna fail information
• Touchscreen input request
• Outputs from BCM
• Distance unit

Outputs:

• Short distances unit data
• Navigation vocal instructions
• Navigation visual instructions information

The hard wired circuits between components related to the RRM and the navigation system may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds. For proper wire repair, (Refer to STANDARD PROCEDURE ) and connector repair procedures, (Refer to REMOVAL ) and (Refer to INSTALLATION ).

However, conventional diagnostic methods will not prove conclusive in the diagnosis of the RRM or the electronic controls and communication between modules and other devices that provide some features of the navigation system. The most reliable, efficient and accurate means to diagnose the RRM or the electronic controls and communication related to navigation system operation requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.

The navigation system components cannot be adjusted or repaired. If any of the navigation system components is damaged or ineffective, that component must be replaced. The external combination antenna can be repaired separately from the RRM. The navigation system software as well as the map data is flash programmable through the Universal Serial Bus (USB) port.