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HEADLIGHT AUTO LEVELING SYSTEM INITIALIZATION

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2016 – MX-5 – Body and Accessories

HEADLIGHT AUTO LEVELING SYSTEM INITIALIZATION

NOTE:

  • The auto leveling control module/AFS control module records the vehicle height in unoccupied condition by performing the headlight auto leveling system initialization.

  • Perform headlight auto leveling system initialization if any of the following services is performed.

    • Auto leveling control module/AFS control module replacement

    • Auto leveling sensor replacement or removal/installation

    • Any service which changes vehicle height, such as suspension replacement or removal/installation

  • Two different procedures are available for the headlight auto leveling system initialization; one which uses the M-MDS, and one which does not.

Procedure Using M-MDS

CAUTION:

  • Perform Steps 5 and 6 within 30 s.

1. Empty the vehicle except for the jack and vehicle tools.

2. Adjust the tire pressure to the specification. (See WHEEL AND TIRE SPECIFICATION.)

3. Move the vehicle to level ground.

4. Connect the M-MDS to the DLC-2.

5. Switch the ignition ON (engine off or on).

NOTE:

  • The LED headlight warning light continues flashing during the first initialization, however, continue the work because it does not indicate an improper procedure.

6. After vehicle identification, the following can be selected from the M-MDS initial screen.

a. “Electrical”

b. “ExteriorLighting”

c. “Headlamp”

d. “Auto Leveling Sensor”

e. “Auto Leveling Sensors Calibration”

7. Verify the LED headlight warning light.

  • The initialization is completed if the LED headlight warning light flashes three times every 0.25 s and turns off. Go to the next step.

  • If the LED headlight warning light flashes at 0.25 s intervals, the procedure may have been performed incorrectly. Repeat the procedure from Step 5.

  • If the LED headlight warning light flashes at 0.5 s intervals, the headlight auto leveling system may have a malfunction. Perform DTC inspection. (See DTC INSPECTION [AUTO LEVELING CONTROL MODULE].) (See DTC INSPECTION [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE].)

    • Repair or replace the malfunctioning location, then repeat the procedure from Step 5.

8. Adjust the headlight aiming. (See HEADLIGHT AIMING.)

Procedure Not Using M-MDS

CAUTION:

  • Perform Steps 4 and 5 within 30 s.

1. Empty the vehicle except for the jack and vehicle tools.

2. Adjust the tire pressure to the specification. (See WHEEL AND TIRE SPECIFICATION.)

3. Move the vehicle to level ground.

4. Switch the ignition ON (engine off or on).

NOTE:

  • The LED headlight warning light continues flashing during the first initialization, however, continue the work because it does not indicate an improper procedure.

CAUTION:

  • If the terminals are mistakenly connected, vehicle damage or fire could occur. When connecting with the jumper wire, thoroughly verify what terminals are being connected to prevent a miss-connection.

5. Using a jumper wire, connect DLC-2 terminals B and J (ground) three times at 0.5—1.5 s intervals as shown in the figure.

6. Verify the LED headlight warning light.

  • The initialization is completed if the LED headlight warning light flashes three times every 0.25 s and turns off. Go to the next step.

  • If the LED headlight warning light flashes at 0.25 s intervals, the procedure may have been performed incorrectly. Repeat the procedure from Step 4.

  • If the LED headlight warning light flashes at 0.5 s intervals, the headlight auto leveling system may have a malfunction. Perform DTC inspection. (See DTC INSPECTION [AUTO LEVELING CONTROL MODULE].) (See DTC INSPECTION [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE].)

    • Repair or replace the malfunctioning location, then repeat the procedure from Step 4.

7. Adjust the headlight aiming. (See HEADLIGHT AIMING.)

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