Auto High-Beam (High-Beam Support System) Control Unit
NOTE:
- Before testing, check for DTCs. If any DTCs are indicated, troubleshoot the indicated DTCs first.
- If you are troubleshooting multiple DTCs, be sure to follow the instructions in:
- Before testing, make sure the No. C23 (7.5 A) fuse in the under-dash fuse/relay box is OK.
1. Disconnect the Auto High-Beam Control Unit 6P Connector .
2. 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 look OK, go to step 3.
3. 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 Auto High-Beam Control Unit .
| Cavity | Wire | Test condition | Test: Desired result | Possible cause if desired result is not obtained |
|---|---|---|---|---|
| 1 | LT GRN | Vehicle in ON mode | Measure the voltage to ground: There should be battery voltage. |
|
| 4 | BLK | Vehicle in ON mode | Check for continuity to ground: There should be continuity. |
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