• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Headlamp Switch Igniton Supply | 1 | 1 | 1 | -- |
Headlamp Leveling Actuator Igniton Supply | 1 | 1 | 1 | -- |
Headlamp Leveling Actuator Control | 1 | 1 | 1 | -- |
Headlamp Leveling Actuator Ground | 1 | 1 | 1 | -- |
Headlamp Switch Ground | -- | 1 | -- | -- |
1. Headlamp Leveling Actuator Malfunction |
With the ignition in the ignition ON or ignition RUN position, voltage is supplied through the IGN E fuse. It then is dispersed to the headlamp switch and the left and right headlamp leveling actuators. The headlamp leveling actuators are then controlled by the headlamp switch to reach the desired position. The headlamp switch is permanently grounded at G201. The left headlamp leveling actuator is permanently grounded at G107 and the right headlamp leveling actuator is permanently grounded at G103.
Exterior Lighting Systems Description and Operation
Control Module References for scan tool information
⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
⇒ | If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. |
⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
⇒ | If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. |
⇒ | If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the headlamp switch. |
⇒ | If greater than the specified range, test the signal circuit for a short to voltage. if the circuit tests normal, replace the headlamp switch. |
Perform the after completing the diagnostic procedure.