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Headlight Leveling Motor Input Test

  1. Turn the ignition switch to LOCK (0).
  2. Disconnect the 3P connector (A) from the headlight leveling motor (B).
    Fig 1: Identifying 3P Connector & Headlight Leveling Motor
    G06162841Courtesy of AMERICAN HONDA MOTOR CO., INC.
  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. Reconnect the connector to the headlight leveling motor, and do these input tests at the connector.
    • If any tests indicate a problem, find and correct the cause, then recheck the system.
    • If all the input tests prove OK, replace the headlight leveling motor (see HEADLIGHT LEVELING MOTOR REPLACEMENT  ).
    WIRE TEST CONDITION REFERENCE TABLE

    Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
    1 YEL Ignition switch ON (II) Measure the voltage to ground: There should be battery voltage.
    • Faulty headlight leveling control unit
    • An open in the wire
    2 PNK Ignition switch ON (II), turn the headlight switch ON Measure the voltage to ground: There should be about 2-12 V. Note: Depending on the headlight leveling position.
    • Poor ground (G401)
    • Faulty headlight leveling control unit
    • An open in the wire
    3 RED Ignition switch ON (II) Measure the voltage to ground: There should be less than 0.1 V.
    • Faulty headlight leveling control unit
    • An open in the wire
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