B2514

B2514 HEIGHT SENSOR UNUSUAL [RR]





Description
The height sensor is installed to the rear suspension arm. The height sensor detects the suspension arm displacement as the vehicle height change. The height sensor transmits the height sensor signal to AFS control unit.

NOTE:
The sensor angle of the unloaded vehicle position is the reference value.




DTC Logic

DTC DETECTION LOGIC
[B2514] Height sensor unusual [RR]

DTC Detection Logic:

DTC CONFIRMATION PROCEDURE
1.DTC ERASE
Erase the DTC memory of AFS with CONSULT-III.
- GO TO 2.
2.DTC CONFIRMATION
1. Start the engine.
2. Turn the headlamp ON.
3. Select the self-diagnosis with CONSULT-III.
4. Check the self-diagnosis result. Refer to Testing and Inspection.
Is "B2514" detected?
YES - Refer to B2514.
NO - Refer to Intermittent Incident.




Diagnosis Procedure
1.CHECK HEIGHT SENSOR POWER SUPPLY OUTPUT
1. Turn the ignition switch ON.
2. Check the voltage between the AFS control unit harness connector and the ground.





Is the measurement value within the standard value?
YES - GO TO 2.
NO - Replace AFS control unit.
2.CHECK HEIGHT SENSOR POWER SUPPLY INPUT
Check the voltage between the AFS control unit harness connector and the ground.





Is the measurement value within the standard value?
YES - Replace AFS control unit.
Less than the standard value -GO TO 3.
Higher than the standard value-GO TO 6.
3.CHECK HEIGHT SENSOR POWER SUPPLY CIRCUIT OUTPUT VOLTAGE
1. Turn the ignition switch OFF.
2. Disconnect the height sensor connector.
3. Turn the ignition switch ON.
4. Check the voltage between the height sensor harness connector and the ground.





Is the measurement value within the standard value?
YES - GO TO 4.
NO - Repair the harnesses or connectors.
4.CHECK HEIGHT SENSOR SIGNAL OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect AFS control unit connector.
3. Check continuity between the AFS control unit harness connector and the height sensor harness connector.





Does continuity exist?
YES - GO TO 5.
NO - Repair the harnesses or connectors.
5.CHECK HEIGHT SENSOR SIGNAL SHORT CIRCUIT
Check continuity between the height sensor harness connector and the ground.





Does continuity exist?
YES - Repair the harnesses or connectors.
NO - Replace the height sensor.
6.CHECK HEIGHT SENSOR GROUND
Check the voltage between the AFS control unit harness connector and the ground.





Is the measurement value within the standard value?
YES - GO TO 7.
NO - Replace AFS control unit.
7.CHECK HEIGHT SENSOR GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect AFS control unit connector and the height sensor connector.
3. Check continuity between the AFS control unit harness connector and the height sensor harness connector.





Does continuity exist?
YES - Replace the height sensor.
NO - Repair the harnesses or connectors.




Component Inspection
1.CHECK HEIGHT SENSOR
1. Remove the height sensor (the height sensor connector is connected).
2. Start the engine.
3. Turn the light switch 2ND.
4. Select "HI SEN OTP RR" of AFS data monitor item.
5. With moving the sensor lever, check the monitor status.





Is the output value normal?
YES - Height sensor is normal.
NO - Replace the height sensor.