B2514

ACTIVE AFS


DTC B2514 HI SEN UNUSUAL RR

1.CHECK HEIGHT SENSOR SIGNAL
CONSULT-III DATA MONITOR
1. Turn ignition switch ON.
2. Select "HI SEN OTP RR" of ADAPTIVE LIGHT data monitor item.
3. Check the monitor status.

HI SEN OTP RR : Approx. 0.25 - 4.75 V

OK or NG
OK - GO TO 2.
NG - If voltage is more than approx. 4.75V, GO TO 7.
- If voltage is less than approx. 0.25V, GO TO 3.
2.CHECK HEIGHT SENSOR POWER SUPPLY





Check voltage between AFS control unit harness connector and ground.





OK or NG
OK - The height sensor system is normal at present.
NG - Replace AFS control unit. Refer to Service and Repair.
3.CHECK HEIGHT SENSOR SIGNAL





Check voltage between AFS control unit harness connector and ground.





OK or NG
OK - Replace AFS control unit. Refer to Service and Repair.
NG - If voltage is less than approx. 0.25V, GO TO 4.
- If voltage is more than approx. 4.75V, GO TO 7.
4.CHECK HEIGHT SENSOR POWER SUPPLY





Check voltage between AFS control unit harness connector and ground.





OK or NG
OK - GO TO 5.
NG - GO TO 9.
5.CHECK HEIGHT SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect height sensor connector.
3. Turn ignition switch ON.





4. Check voltage between height sensor harness connector and ground.





OK or NG
OK - GO TO 6.
NG - Repair harness or connector.
6.CHECK HEIGHT SENSOR SIGNAL CIRCUIT
1. Disconnect AFS control unit connector.





2. Check continuity between AFS control unit harness connector
(A) and height sensor harness connector (B).





OK or NG
OK - Replace height sensor. Refer to Service and Repair.
NG - Repair harness or connector.
7.CHECK HEIGHT SENSOR GROUND





Check voltage between AFS control unit harness connector and ground.





OK or NG
OK - GO TO 8.
NG - Check connector for connection, bend and loose fit. If it is normal, replace AFS control unit. Refer to Service and Repair.
8.CHECK HEIGHT SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AFS control unit connector and height sensor connector.





3. Check continuity between AFS control unit harness connector
(A) and height sensor harness connector (B).





OK or NG
OK - Replace height sensor. Refer to Service and Repair.
NG - Repair harness or connector.
9.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 10.
10.CHECK HEIGHT SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect height sensor connector.
3. Turn ignition switch ON.





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





OK or NG
OK - GO TO 11.
NG - GO TO 12.
11.CHECK HEIGHT SENSOR SIGNAL CIRCUIT (SHORT CIRCUIT)
1. Disconnect AFS control unit connector.





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





OK or NG
OK - Replace height sensor. Refer to Service and Repair.
NG - Repair harness or connector.
12.CHECK HEIGHT 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.