Lighting and Horns
Diagnostic Trouble Code (DTC) Chart
Headlamp Control Module (HCM) DTC Chart
NOTE: This module utilizes a 5-character DTC followed by a 2-character failure-type code. The failure-type code provides information about specific fault conditions such as opens, or shorts to ground. Continuous memory DTCs have an additional 2-character DTC status code suffix to assist in determining DTC history.
