Inspection and Verification: Notes
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.
- Verify the customer concern.
- Visually inspect for obvious signs of mechanical or electrical damage.VISUAL INSPECTION CHART
Mechanical Electrical - Antenna coaxial cable
- GPS antenna
- Navigation system DVD
- Central junction box (CJB) fuse(s):
- 3 (10A)
- 33 (15A)
- Microphone
- Circuitry
- Navigation system module
- Audio unit
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before preceding to the next step.
- If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
- check that the program card is correctly installed.
- check the connections to the vehicle.
- check the ignition switch position.
- If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
- Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
- SCP, or ISO circuits fault; all electronic control units no response/not equipped, refer to MODULE COMMUNICATIONS NETWORK .
- No response/not equipped for the navigation system module, Go to PINPOINT TEST A .
- System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), clear the continuous DTCs, and carry out self-test diagnostics for the navigation system module.
- If the DTCs retrieved are related to the concern, go to the NAVIGATION SYSTEM MODULE DIAGNOSTIC TROUBLE CODE (DTC) INDEX .
- If no DTCs related to the concern are retrieved, GO to SYMPTOM CHART .