B2504

ACTIVE AFS

DTC B2504 SWIVEL ACTUATOR LH

1.CHECK SWIVEL POSITION SENSOR SIGNAL
1. Turn ignition switch ON.

2. Check voltage between AFS control unit harness connector and ground.

OK or NG
OK - GO TO 2.
NG
- If voltage is less than approx. 0.25V, GO TO 3.
- If voltage is more than approx. 4.75V, GO TO 6.
2.CHECK SWIVEL POSITION SENSOR POWER SUPPLY

Check voltage between AFS control unit harness connector and ground.

OK or NG
OK - GO TO 12.
NG - Replace AFS control unit. Refer to Service and Repair.
3.CHECK SWIVEL POSITION SENSOR POWER SUPPLY

Check voltage between AFS control unit harness connector and ground.

OK or NG
OK - GO TO 4.
NG - GO TO 8.
4.CHECK SWIVEL POSITION SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front combination lamp LH connector.
3. Turn ignition switch ON.

4. Check voltage between front combination lamp LH harness connector and ground.

OK or NG
OK - GO TO 5.
NG - Repair harness or connector.
5.CHECK SWIVEL POSITION SENSOR SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AFS control unit connector.

3. Check continuity between AFS control unit harness connector
(A) and front combination lamp LH harness connector (B).

Check voltage between AFS control unit harness connector and ground.

OK or NG
OK - GO TO 7.
NG - Check connector for connection, bend and loose fit. If it is normal, replace AFS control unit. Refer to Service and Repair.
7.CHECK SWIVEL POSITION SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AFS control unit connector and front combination lamp LH connector.

3. Check continuity between AFS control unit harness connector
(A) and front combination lamp LH harness connector (B).

OK or NG
OK - Replace front combination lamp LH (swivel position sensor malfunction). Refer to AFS OFF Indicator Does Not Operate Active AFS Removal and Installation Service and Repair, "Removal and Installation of Front Combination Lamp".
NG - Repair harness or connector.
8.CHECK DIAGNOSIS RESULT
Select "ADAPTIVE LIGHT" on CONSULT-III. Select "SELF-DIAG RESULTS" on "SELECT DIAG MODE" screen.
Is DTC B2521 ECU CIRC detected?
YES - Refer to B2521.
NO - GO TO 9.
9.CHECK SWIVEL POSITION SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front combination lamp LH connector.
3. Turn ignition switch ON.

4. Check voltage between AFS control unit harness connector and ground.

OK or NG
OK - GO TO 10.
NG - GO TO 11.
10.CHECK SWIVEL POSITION SENSOR SIGNAL CIRCUIT (SHORT CIRCUIT)
1. Turn ignition switch OFF.
2. Disconnect AFS control unit connector.

3. Check continuity between AFS control unit harness connector and ground.

OK or NG
OK - Replace front combination lamp LH (swivel position sensor malfunction). Refer to Removal and Installation.
NG - Repair harness or connector.
11.CHECK SWIVEL POSITION SENSOR POWER SUPPLY CIRCUIT (SHORT CIRCUIT)
1. Turn ignition switch OFF.
2. Disconnect AFS control unit connector.

3. Check continuity between AFS control unit harness connector and ground.

OK or NG
OK - Replace AFS control unit. Refer to Service and Repair.
NG - Repair harness or connector.
12.CHECK SWIVEL MOTOR
1. Turn ignition switch OFF.
2. Disconnect front combination lamp LH connector.

3. Check continuity between front combination lamp LH connector terminals.

4. Check continuity between front combination lamp LH connector terminals.

5. Check continuity between front combination lamp LH connector terminals (insulation resistance).

OK or NG
OK - GO TO 13.
NG - Replace front combination lamp LH (swivel motor malfunction). Refer to Removal and Installation.
13.CHECK SWIVEL MOTOR CIRCUIT 1
1. Connect front combination lamp LH connector.
2. Turn ignition switch ON.

3. Check voltage between AFS control unit harness connector and ground.

OK or NG
OK - GO TO 14.
NG - GO TO 16.
14.CHECK DIAGNOSIS RESULT 1
Select "ADAPTIVE LIGHT" on CONSULT-III. Select "SELF-DIAG RESULTS" on "SELECT DIAG MODE" screen.
Is DTC of present malfunction detected?
YES - � If detect DTC B2503 and B2504, refer to "DTC B2504 SWIVEL ACTUATOR LH".
- If detect DTC B2504 only, replace AFS control unit. Refer to Service and Repair.
- If detect any DTC except B2503 and B2504, refer to Active AFS, "CONSULT-III Function (ADAPTIVE LIGHT)".
NO - GO TO 15.
15.CHECK DIAGNOSIS RESULT 2
Select "ADAPTIVE LIGHT" on CONSULT-III, check "SELF-DIAG RESULTS" with steering turning 180� or more to left under swivel operative condition to keep more than 2 seconds.
Is DTC B2504 of present malfunction detected?
YES - Replace front combination lamp LH (swivel actuator malfunction). Refer to Removal and Installation.
NO - The swivel actuator system LH is normal at present.
16.CHECK SWIVEL MOTOR CIRCUIT 2
1. Turn ignition switch OFF.
2. Disconnect AFS control unit connector and front combination lamp LH connector.

3. Check continuity between AFS control unit harness connector
(A) and front combination lamp LH harness connector (B).

4. Check continuity between AFS control unit harness connector
(A) and ground.

OK or NG
OK - Replace AFS control unit. Refer to Service and Repair.
NG - Repair or replace harness or connector.