Pinpoint Test H: The Navigation System Module Does Not Respond To The Diagnostic Tool
WARNING: This page is about a different car, the 2005 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
- H1 CHECK THE NAVIGATION SYSTEM MODULE C4209 FOR DAMAGE
- Key in OFF position.
- Disconnect: Navigation System Module C4209.
- Inspect the navigation system module C4209 for damage.
- Is the navigation system module C4209 OK?
- Yes : GO to H2.
- No : REPAIR the navigation system module C4209 as necessary. CARRY OUT the diagnostic tool data link test.
- H2 CHECK FOR AN OPEN BETWEEN THE DATA LINK CONNECTOR (DLC) C251 AND THE NAVIGATION SYSTEM MODULE C4209
- Measure the resistance between the navigation system module C4209 pin 4, circuit 914 (TN/OG), harness side and the DLC C251 pin 2, circuit 914 (TN/OG), harness side.
- Measure the resistance between the navigation system module C4209 pin 16, circuit 915 (PK/LB), harness side and the DLC C251 pin 10, circuit 915 (PK/LB), harness side.
- Are the resistances less than 5 ohms?
- Yes : GO to H3.
- No : REPAIR the circuit in question. CARRY OUT the diagnostic tool data link test.
- H3 CHECK FOR CORRECT NAVIGATION SYSTEM MODULE OPERATION
- Disconnect all the navigation system module connectors.
- Check for:
- corrosion
- push-out pins
- Connect all the navigation system module connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new navigation system module. Refer to NAVIGATION SYSTEM . CARRY OUT the diagnostic tool data link test.
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test. CARRY OUT the diagnostic tool data link test.