Pinpoint Test T : The Headlamp Control Module (HCM) Does Not Respond To The Diagnostic Scan Tool: Notes
WARNING: This page is about a different car, the 2018 Lincoln Continental. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Module Communications Network for schematic and connector information.
Refer to Headlamps/Autolamps for schematic and connector information.
Normal Operation and Fault Conditions
The HCM communicates with the diagnostic scan tool through the HS-CAN1.
Possible Sources
- Fuse
- Wiring, terminals and connector
- HCM
Visual Inspection and Diagnostic Pre-checks
Verify BCM fuse 20 (5A) is OK.