Circuit/System Verification
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, with a scan tool, command the DHL motor control UP and DOWN while observing both headlamps. Both headlamps should operate to the UP and DOWN positions when commanded.
- If the headlamps do not operate to the UP and DOWN positions when commanded, refer to Headlamp Leveling Actuator Malfunction .
- Observe the scan tool front leveling position sensor voltage parameter. The reading should be between 0.5 and 4.9 volts.
- If the reading is not within the specified range, refer to Headlamp Leveling Sensor Malfunction .
- Observe the scan tool rear leveling position sensor voltage parameter. The reading should be between 0.5 and 4.9 volts.
- If the reading is not within the specified range, refer to Headlamp Leveling Sensor Malfunction .