Description

Headlight leveling actuator circuit malfunction

Detection condition

• Headlight leveling actuator circuit voltage of 3.2 V or less is detected for 5 s or more with the ignition switched ON (engine off or on).

Fail-safe

• The swivel actuator is moved to the center.

• The headlight leveling actuator is stopped at the position when the malfunction is determined.

Possible cause

• Front combination light (LH) connector or terminal malfunction

• Front combination light (RH) connector or terminal malfunction

• Adaptive front lighting system (AFS) control module connector or terminal malfunction

• Short to ground in wiring harness between the following terminals:

• Adaptive front lighting system (AFS) control module terminal P—Front combination light (LH) terminal I

• Adaptive front lighting system (AFS) control module terminal O—Front combination light (LH) terminal F

• Adaptive front lighting system (AFS) control module terminal P—Front combination light (RH) terminal I

• Adaptive front lighting system (AFS) control module terminal O—Front combination light (RH) terminal F

• Open circuit in wiring harness between the following terminals:

• Adaptive front lighting system (AFS) control module terminal P—Front combination light (LH) terminal I

• Adaptive front lighting system (AFS) control module terminal O—Front combination light (LH) terminal F

• Adaptive front lighting system (AFS) control module terminal P—Front combination light (RH) terminal I

• Adaptive front lighting system (AFS) control module terminal O—Front combination light (RH) terminal F

• Headlight leveling actuator malfunction

• Adaptive front lighting system (AFS) control module malfunction

Step

Inspection

Action

1

• Switch the ignition to off.

• Disconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Disconnect the front combination light (LH) connector.

• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.

• Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 7.

2

• Disconnect the front combination light (RH) connector.

• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.

• Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 7.

3

• Disconnect the adaptive front lighting system (AFS) control module connector.

• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.

• Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 7.

4

• Verify that the front combination light (LH), front combination light (RH) and adaptive front lighting system (AFS) control module connectors are disconnected.

• Inspect for continuity between the following terminals (wiring harness-side) and body ground:

• Front combination light (LH) terminal I

• Front combination light (LH) terminal F

• Front combination light (RH) terminal I

• Front combination light (RH) terminal F

• Is there continuity?

Yes

Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

• Adaptive front lighting system (AFS) control module terminal P—Front combination light (LH) terminal I

• Adaptive front lighting system (AFS) control module terminal O—Front combination light (LH) terminal F

• Adaptive front lighting system (AFS) control module terminal P—Front combination light (RH) terminal I

• Adaptive front lighting system (AFS) control module terminal O—Front combination light (RH) terminal F

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to ground.

Go to Step 7.

No

Go to the next step.

5

• Verify that the front combination light (LH), front combination light (RH) and adaptive front lighting system (AFS) control module connectors are disconnected.

• Inspect for continuity between the following terminals (wiring harness-side):

• Adaptive front lighting system (AFS) control module terminal P—Front combination light (LH) terminal I

• Adaptive front lighting system (AFS) control module terminal O—Front combination light (LH) terminal F

• Adaptive front lighting system (AFS) control module terminal P—Front combination light (RH) terminal I

• Adaptive front lighting system (AFS) control module terminal O—Front combination light (RH) terminal F

• Is there continuity?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

• Adaptive front lighting system (AFS) control module terminal P—Front combination light (LH) terminal I

• Adaptive front lighting system (AFS) control module terminal O—Front combination light (LH) terminal F

• Adaptive front lighting system (AFS) control module terminal P—Front combination light (RH) terminal I

• Adaptive front lighting system (AFS) control module terminal O—Front combination light (RH) terminal F

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit.

Go to Step 7.

6

• Perform the headlight leveling actuator operation check mode.

  (See HEADLIGHT LEVELING ACTUATOR OPERATION CHECK MODE [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE].)

• Does the headlight leveling actuator operate normally?

Yes

Go to the next step.

No

Replace the front combination light, then go to the next step.

(See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION.)

7

• Always reconnect all disconnected connectors.

• Connect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Clear the adaptive front lighting system (AFS) control module DTCs using the M-MDS.

  (See CLEARING DTC [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE].)

• Switch the ignition ON (engine off or on) and wait for 5 s or more.

• Retrieve the adaptive front lighting system (AFS) control module DTCs using the M-MDS.

  (See DTC INSPECTION [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE].)

• Is the same DTC displayed?

Yes

Repeat the inspection from Step 1.

• If the malfunction recurs, replace the adaptive front lighting system (AFS) control module, then go to the next step.

  (See ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE REMOVAL/INSTALLATION.)

No

Go to the next step.

8

• Are any other DTCs displayed?

Yes

Repair the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC TABLE [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE].)

No

DTC troubleshooting completed.