Code No. B2514 Height sensor supply voltage


caution
  • Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.
  • When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the ignition key needs to be registered to the ETACS-ECU. (If the encrypted code is not registered, the engine cannot be started. Register the encrypted code as described in Immobilizer System - How to Register Key ID .)

DIAGNOSTIC FUNCTION



JUDGEMENT CRITERIA



PROBABLE CAUSES



  • Malfunction of the front height sensor
  • Malfunction of the rear height sensor
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors

DIAGNOSIS PROCEDURE


STEP 1. Voltage measurement at front height sensor connector (SBF terminal).


(1)Disconnect the connector, and measure at the wiring harness-side connector.
(2)Turn the ignition switch to the ON position.
(3)Measure the resistance between the front height sensor connector (SBF terminal) and body earth.
OK: 5 V

Q. Is the check result normal?





STEP 2. Check of short to power supply, short to earth circuit in SBF line between front height sensor connector and ETACS-ECU connector.


Q. Is the check result normal?





STEP 3. Check whether the diagnosis code is reset.


Q. Is diagnosis code No. B2514 set?





STEP 4. Voltage measurement at rear height sensor connector (SBR terminal).


(1)Disconnect the connector, and measure at the wiring harness-side connector.
(2)Turn the ignition switch to the ON position.
(3)Measure the resistance between the rear height sensor connector (SBR terminal) and body earth.
OK: 5 V

Q. Is the check result normal?





STEP 5. Check of short to power supply, short to earth circuit in SBR line between rear height sensor connector and ETACS-ECU connector.


Q. Is the check result normal?





STEP 6. Check whether the diagnosis code is reset.


Q. Is diagnosis code No. B2514 set?





STEP 7. M.U.T.-III data list



Item No.
 Item name
 Normal condition
Item 410
 HS power supply voltage
 5 V
OK: Normal condition is displayed.

Q. Is the check result normal?





STEP 8. Front height sensor check



Q. Is the check result normal?





STEP 9. Check whether the diagnosis code is reset.


Q. Is diagnosis code No. B2514 set?





STEP 10. Rear height sensor check



Q. Is the check result normal?





STEP 11. Check whether the diagnosis code is reset.


Q. Is diagnosis code No. B2514 set?