Headlight Leveling Motor Input Test
NOTE: Before testing, check for DTCs. If any DTCs are indicated, troubleshoot those DTCs first, and combination light switch circuit is OK.
1. Turn the vehicle to the OFF (LOCK) mode.
2. Disconnect the headlight leveling motor 3P connector - Refer to: Headlight Leveling Motor Removal and Installation (2014 2015 2016) or Headlight Leveling Motor Removal and Installation (2017 2018 2019 2020)
.
3. Inspect the connector and socket terminals to be sure they are all making good contact:
- If the terminals are bent, loose, or corroded, repair them as necessary, and recheck the system.
- If the terminals are OK, go to step 4.
4. With the connector still disconnected, do the following input tests:
- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, replace the headlight leveling motor - Refer to: Headlight Leveling Motor Removal and Installation (2017 2018 2019 2020), or Headlight Leveling Motor Removal and Installation (2014 2015 2016) .
- Do the headlight leveling control unit input test - Refer to: Headlight Leveling Control Unit Input Test (2014 2015 2016) or Headlight Leveling Control Unit Input Test (2017 2018 2019 2020) .
| Cavity | Wire | Test condition | Test: Desired result | Possible cause if desired result is not obtained |
|---|---|---|---|---|
| 3 | GRN | Vehicle ON mode | Measure the voltage to ground: There should be battery voltage. |
|
| 1 | YEL | Under all conditions | Check for continuity to ground: There should be continuity. |
|
| 2 | BRN | Vehicle ON mode | Measure the voltage to ground: There should be about 3 to 13 V. |
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