No.4 AFS OFF LIGHT FLASHES WHEN THE IGNITION IS SWITCHED TO ON [AFS (ADAPTIVE FRONT LIGHTING SYSTEM)]

id0903h9914400

4

AFS OFF light flashes when the ignition is switched to ON

DESCRIPTION

•  The AFS OFF light flashes when the ignition is switched ON.

POSSIBLE CAUSE

•  Headlight auto leveling function related electrical part malfunction

―  Front auto leveling sensor related part malfunction (With front auto leveling sensor)

•  Output signal excessively high or low

•  Front auto leveling sensor malfunction

―  Rear auto leveling sensor related part malfunction

•  Output signal excessively high or low

•  Rear auto leveling sensor malfunction

―  Swivel actuator (RH or LH) (built-in front combination light) related part malfunction

•  Swivel actuator (RH or LH) related circuit malfunction

•  Swivel actuator (RH or LH) malfunction

―  AFS control module malfunction

―  AFS control module power supply voltage excessively high

•  AFS OFF light illumination circuit malfunction

―  Instrument cluster malfunction

―  Communication error between AFS control module and Instrument cluster

Diagnostic Procedure

With front auto leveling sensor

Step

Inspection

Action

1

INSPECT FRONT AUTO LEVELING SENSOR INSTALLATION

•  Inspect the front auto leveling sensor installation (bent or damaged bracket, or dislocated link).

•  Is there any bending, damage or dislocated links at the bracket?

Yes

Repair or replace the malfunctioning part, then install the front auto leveling sensor properly.

(See AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)

No

Go to the next step.

2

INSPECT REAR AUTO LEVELING SENSOR INSTALLATION

•  Inspect the rear auto leveling sensor installation (bent or damaged bracket, or dislocated link).

•  Is there any bending, damage or dislocated links at the bracket?

Yes

Repair or replace the malfunctioning part, then install the rear auto leveling sensor properly.

(See AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)

No

Go to the next step.

3

INSPECT AFS CONTROL MODULE POWER SUPPLY VOLTAGE

•  Switch the ignition to ON.

•  Measure the voltage between AFS control module terminals H and ground.

•  Is the voltage B+?

Yes

Go to the next step.

No

Inspect and repair or replace the malfunctioning part for an open circuit between the ignition switch (push start) and AFS control module terminals H.

4

INSPECT AFS CONTROL MODULE GROUND CIRCUIT FOR OPEN CIRCUIT

•  Switch the ignition to off.

•  Disconnect the AFS control module connector.

•  Verify the continuity between the AFS control module wiring harness-side connector terminal F and ground.

•  Is there continuity?

Yes

Connect the AFS control module connector, then go to the next step.

No

Inspect and repair for a loose or poor connection in the AFS control module ground point.

5

INSPECT IF MALFUNCTION IS IN FRONT AUTO LEVELING SENSOR OR ELSEWHERE

•  Switch the ignition to ON.

•  Turn the headlights on.

•  Measure the voltage between AFS control module terminal G and ground.

•  Is the voltage 0.4—4.6V?

Yes

Go to the next step.

No

Go to Step 9.

6

INSPECT IF MALFUNCTION IS IN REAR AUTO LEVELING SENSOR OR ELSEWHERE

•  Turn the headlights on.

•  Measure the voltage between AFS control module terminal E and ground.

•  Is the voltage 0.4—4.6V?

Yes

Go to Step 11.

No

Go to the next step.

7

INSPECT REAR AUTO LEVELING SENSOR SIGNAL RELATED CIRCUIT

•  Inspect for an open or short circuit in the wiring harness between AFS control module terminal E and rear auto leveling sensor terminal B.

•  Is an open or short circuit detected?

Yes

Repair or replace the malfunctioning part for an open or short circuit.

No

Go to the next step.

8

INSPECT REAR AUTO LEVELING SENSOR

•  Inspect the rear auto leveling sensor.
(See AUTO LEVELING SENSOR INSPECTION.)

•  Is the rear auto leveling sensor normal?

Yes

Repair or replace the malfunctioning part for an open circuit in the following:

•  Between AFS control module terminal M and rear leveling sensor terminal C

•  Between AFS control module terminal D and rear auto leveling sensor terminal A

No

Replace the rear auto leveling sensor.

(See AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)

9

INSPECT IF MALFUNCTION IS IN FRONT AUTO LEVELING SENSOR POWER OR GROUND CIRCUIT OR ELSEWHERE

•  Switch the ignition to off.

•  Disconnect the front and rear auto leveling sensor connectors.

•  Switch the ignition to ON.

•  Turn the headlights on.

•  Measure the voltage between front auto leveling sensor terminals A and C at the wiring harness-side connector.

•  Is the voltage 4.75—5.25V?

Yes

Go to the next step.

No

Inspect for an open or short circuit in the following:

•  Between AFS control module terminal M and front auto leveling sensor terminal C

•  Between AFS control module terminal M and rear auto leveling sensor terminal C

•  Between AFS control module terminal D and front auto leveling sensor terminal A

•  Between AFS control module terminal D and rear auto leveling sensor terminal A

Repair or replace the malfunctioning part for an open or short circuit.

10

INSPECT FRONT AUTO LEVELING SENSOR SIGNAL CIRCUIT FOR OPEN OR SHORT CIRCUIT

•  Inspect for an open or short circuit in the wiring harness between AFS control module terminal G and front auto leveling sensor terminal B.

•  Is an open or short circuit detected?

Yes

Repair or replace malfunctioning part for an open or short circuit.

No

Inspect the front auto leveling sensor.

If it is malfunctioning, replace the front auto leveling sensor.

(See AUTO LEVELING SENSOR INSPECTION.)

(See AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)

11

INSPECT IF MALFUNCTION IS IN COMMUNICATION BETWEEN AFS CONTROL MODULE AND INSTRUMENT CLUSTER OR ELSEWHERE

•  Retrieve the DTCs for the AFS control module and the instrument cluster using the M-MDS.

•  Are the following DTCs displayed?

―  AFS control module:U0001:88, U0155:00

―  Instrument cluster:U0001:88, U0182:00

Yes

Go to the applicable DTC inspection.

No

Go to the next step.

12

INSPECT IF MALFUNCTION IS IN INSTRUMENT CLUSTER OR AFS CONTROL MODULE

•  Inspect the instrument cluster.
(See INSTRUMENT CLUSTER INSPECTION.)

•  Is the instrument cluster normal?

Yes

Go to the next step.

No

Replace the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

13

INSPECT WIRING HARNESS BETWEEN SWIVEL ACTUATOR AND AFS CONTROL MODULE

•  Inspect the following wiring harnesses and connectors:

Swivel actuator (RH)

―  Terminal F to AFS control module terminal I

―  Terminal I to AFS control module terminal J

―  Terminal J to AFS control module terminal X

―  Terminal K to AFS control module terminal R

―  Terminal L to AFS control module terminal L

Swivel actuator (LH)

―  Terminal F to AFS control module terminal K

―  Terminal I to AFS control module terminal J

―  Terminal J to AFS control module terminal U

―  Terminal K to AFS control module terminal T

―  Terminal L to AFS control module terminal L

•  Is there an open or short circuit, or poor contact?

Yes

Repair or replace the malfunctioning part.

No

Go to the next step.

14

INSPECT IF MALFUNCTION IS IN SWIVEL ACTUATOR OR AFS CONTROL MODULE

•  Replace the front combination lights on the left and right separately with a front combination light in which the actuator operates normally.

•  Does the AFS OFF light flash after replacing the front combination light on the left or right side?

Yes

Replace the AFS control module.

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

No

Replace the suspected side front combination light.

(See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION.)

Step	Inspection	Action
1	INSPECT FRONT AUTO LEVELING SENSOR INSTALLATION • Inspect the front auto leveling sensor installation (bent or damaged bracket, or dislocated link). • Is there any bending, damage or dislocated links at the bracket?	Yes	Repair or replace the malfunctioning part, then install the front auto leveling sensor properly. (See AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)
No	Go to the next step.
2	INSPECT REAR AUTO LEVELING SENSOR INSTALLATION • Inspect the rear auto leveling sensor installation (bent or damaged bracket, or dislocated link). • Is there any bending, damage or dislocated links at the bracket?	Yes	Repair or replace the malfunctioning part, then install the rear auto leveling sensor properly. (See AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)
No	Go to the next step.
3	INSPECT AFS CONTROL MODULE POWER SUPPLY VOLTAGE • Switch the ignition to ON. • Measure the voltage between AFS control module terminals H and ground. • Is the voltage B+?	Yes	Go to the next step.
No	Inspect and repair or replace the malfunctioning part for an open circuit between the ignition switch (push start) and AFS control module terminals H.
4	INSPECT AFS CONTROL MODULE GROUND CIRCUIT FOR OPEN CIRCUIT • Switch the ignition to off. • Disconnect the AFS control module connector. • Verify the continuity between the AFS control module wiring harness-side connector terminal F and ground. • Is there continuity?	Yes	Connect the AFS control module connector, then go to the next step.
No	Inspect and repair for a loose or poor connection in the AFS control module ground point.
5	INSPECT IF MALFUNCTION IS IN FRONT AUTO LEVELING SENSOR OR ELSEWHERE • Switch the ignition to ON. • Turn the headlights on. • Measure the voltage between AFS control module terminal G and ground. • Is the voltage 0.4—4.6V?	Yes	Go to the next step.
No	Go to Step 9.
6	INSPECT IF MALFUNCTION IS IN REAR AUTO LEVELING SENSOR OR ELSEWHERE • Turn the headlights on. • Measure the voltage between AFS control module terminal E and ground. • Is the voltage 0.4—4.6V?	Yes	Go to Step 11.
No	Go to the next step.
7	INSPECT REAR AUTO LEVELING SENSOR SIGNAL RELATED CIRCUIT • Inspect for an open or short circuit in the wiring harness between AFS control module terminal E and rear auto leveling sensor terminal B. • Is an open or short circuit detected?	Yes	Repair or replace the malfunctioning part for an open or short circuit.
No	Go to the next step.
8	INSPECT REAR AUTO LEVELING SENSOR • Inspect the rear auto leveling sensor. (See AUTO LEVELING SENSOR INSPECTION.) • Is the rear auto leveling sensor normal?	Yes	Repair or replace the malfunctioning part for an open circuit in the following: • Between AFS control module terminal M and rear leveling sensor terminal C • Between AFS control module terminal D and rear auto leveling sensor terminal A
No	Replace the rear auto leveling sensor. (See AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)
9	INSPECT IF MALFUNCTION IS IN FRONT AUTO LEVELING SENSOR POWER OR GROUND CIRCUIT OR ELSEWHERE • Switch the ignition to off. • Disconnect the front and rear auto leveling sensor connectors. • Switch the ignition to ON. • Turn the headlights on. • Measure the voltage between front auto leveling sensor terminals A and C at the wiring harness-side connector. • Is the voltage 4.75—5.25V?	Yes	Go to the next step.
No	Inspect for an open or short circuit in the following: • Between AFS control module terminal M and front auto leveling sensor terminal C • Between AFS control module terminal M and rear auto leveling sensor terminal C • Between AFS control module terminal D and front auto leveling sensor terminal A • Between AFS control module terminal D and rear auto leveling sensor terminal A Repair or replace the malfunctioning part for an open or short circuit.
10	INSPECT FRONT AUTO LEVELING SENSOR SIGNAL CIRCUIT FOR OPEN OR SHORT CIRCUIT • Inspect for an open or short circuit in the wiring harness between AFS control module terminal G and front auto leveling sensor terminal B. • Is an open or short circuit detected?	Yes	Repair or replace malfunctioning part for an open or short circuit.
No	Inspect the front auto leveling sensor. If it is malfunctioning, replace the front auto leveling sensor. (See AUTO LEVELING SENSOR INSPECTION.) (See AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)
11	INSPECT IF MALFUNCTION IS IN COMMUNICATION BETWEEN AFS CONTROL MODULE AND INSTRUMENT CLUSTER OR ELSEWHERE • Retrieve the DTCs for the AFS control module and the instrument cluster using the M-MDS. • Are the following DTCs displayed? ― AFS control module:U0001:88, U0155:00 ― Instrument cluster:U0001:88, U0182:00	Yes	Go to the applicable DTC inspection.
No	Go to the next step.
12	INSPECT IF MALFUNCTION IS IN INSTRUMENT CLUSTER OR AFS CONTROL MODULE • Inspect the instrument cluster. (See INSTRUMENT CLUSTER INSPECTION.) • Is the instrument cluster normal?	Yes	Go to the next step.
No	Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
13	INSPECT WIRING HARNESS BETWEEN SWIVEL ACTUATOR AND AFS CONTROL MODULE • Inspect the following wiring harnesses and connectors: Swivel actuator (RH) ― Terminal F to AFS control module terminal I ― Terminal I to AFS control module terminal J ― Terminal J to AFS control module terminal X ― Terminal K to AFS control module terminal R ― Terminal L to AFS control module terminal L Swivel actuator (LH) ― Terminal F to AFS control module terminal K ― Terminal I to AFS control module terminal J ― Terminal J to AFS control module terminal U ― Terminal K to AFS control module terminal T ― Terminal L to AFS control module terminal L • Is there an open or short circuit, or poor contact?	Yes	Repair or replace the malfunctioning part.
No	Go to the next step.
14	INSPECT IF MALFUNCTION IS IN SWIVEL ACTUATOR OR AFS CONTROL MODULE • Replace the front combination lights on the left and right separately with a front combination light in which the actuator operates normally. • Does the AFS OFF light flash after replacing the front combination light on the left or right side?	Yes	Replace the AFS control module. (See AFS (ADAPTIVE FRONT LIGHTING SYSTEM) CONTROL MODULE REMOVAL/INSTALLATION.)
No	Replace the suspected side front combination light. (See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION.)

Without front auto leveling sensor

Step

Inspection

Action

1

INSPECT REAR AUTO LEVELING SENSOR INSTALLATION

•  Inspect the rear auto leveling sensor installation (bent or damaged bracket, or dislocated link).

•  Is there any bending, damage or dislocated links at the bracket?

Yes

Repair or replace the malfunctioning part, then install the rear auto leveling sensor properly.

(See AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)

No

Go to the next step.

2

INSPECT AFS CONTROL MODULE POWER SUPPLY VOLTAGE

•  Switch the ignition to ON.

•  Measure the voltage between AFS control module terminals H and ground.

•  Is the voltage B+?

Yes

Go to the next step.

No

Inspect and repair or replace the malfunctioning part for an open circuit between the ignition switch (push start) and AFS control module terminals H.

3

INSPECT AFS CONTROL MODULE GROUND CIRCUIT FOR OPEN CIRCUIT

•  Switch the ignition to off.

•  Disconnect the AFS control module connector.

•  Verify the continuity between the AFS control module wiring harness-side connector terminal F and ground.

•  Is there continuity?

Yes

Connect the AFS control module connector, then go to the next step.

No

Inspect and repair for a loose or poor connection in the AFS control module ground point.

4

INSPECT IF MALFUNCTION IS IN REAR AUTO LEVELING SENSOR OR ELSEWHERE

•  Turn the headlights on.

•  Measure the voltage between AFS control module terminal E and ground.

•  Is the voltage 0.4—4.6V?

Yes

Go to Step 10.

No

Go to the next step.

5

INSPECT REAR AUTO LEVELING SENSOR SIGNAL RELATED CIRCUIT

•  Inspect for an open or short circuit in the wiring harness between AFS control module terminal E and rear auto leveling sensor terminal B.

•  Is an open or short circuit detected?

Yes

Repair or replace the malfunctioning part for an open or short circuit.

No

Go to the next step.

6

INSPECT REAR AUTO LEVELING SENSOR

•  Inspect the rear auto leveling sensor.
(See AUTO LEVELING SENSOR INSPECTION.)

•  Is the rear auto leveling sensor normal?

Yes

Repair or replace the malfunctioning part for an open circuit in the following:

•  Between AFS control module terminal M and rear leveling sensor terminal C

•  Between AFS control module terminal D and rear auto leveling sensor terminal A

No

Replace the rear auto leveling sensor.

(See AUTO LEVELING SENSOR REMOVAL/INSTALLATION.)

7

INSPECT IF MALFUNCTION IS IN COMMUNICATION BETWEEN AFS CONTROL MODULE AND INSTRUMENT CLUSTER OR ELSEWHERE

•  Retrieve the DTCs for the AFS control module and the instrument cluster using the M-MDS.

•  Are the following DTCs displayed?

―  AFS control module:U0001:88, U0155:00

―  Instrument cluster:U0001:88, U0182:00

Yes

Go to the applicable DTC inspection.

No

Go to the next step.

8

INSPECT IF MALFUNCTION IS IN INSTRUMENT CLUSTER OR AFS CONTROL MODULE

•  Inspect the instrument cluster.
(See INSTRUMENT CLUSTER INSPECTION.)

•  Is the instrument cluster normal?

Yes

Go to the next step.

No

Replace the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

9

INSPECT WIRING HARNESS BETWEEN SWIVEL ACTUATOR AND AFS CONTROL MODULE

•  Inspect the following wiring harnesses and connectors:

Swivel actuator (RH)

―  Terminal F to AFS control module terminal I

―  Terminal I to AFS control module terminal J

―  Terminal J to AFS control module terminal X

―  Terminal K to AFS control module terminal R

―  Terminal L to AFS control module terminal L

Swivel actuator (LH)

―  Terminal F to AFS control module terminal K

―  Terminal I to AFS control module terminal J

―  Terminal J to AFS control module terminal U

―  Terminal K to AFS control module terminal T

―  Terminal L to AFS control module terminal L

•  Is there an open or short circuit, or poor contact?

Yes

Repair or replace the malfunctioning part.

No

Go to the next step.

10

INSPECT IF MALFUNCTION IS IN SWIVEL ACTUATOR OR AFS CONTROL MODULE

•  Replace the front combination lights on the left and right separately with a front combination light in which the actuator operates normally.

•  Does the AFS OFF light flash after replacing the front combination light on the left or right side?

Yes

Replace the AFS control module.

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

No

Replace the suspected side front combination light.

(See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION.)