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Home >> Acura >> 2012 >> ZDX >> Repair and Diagnosis >> Electrical >> Gauges >> Blind Spot Information System (BSI) >> Symptom Troubleshooting >> The HDS does not communicate with the blind spot information system (BSI)

The HDS does not communicate with the blind spot information system (BSI)

NOTE:
  • If the system malfunctions, always check for DTCs with the HDS.
  • If a DTC is stored; troubleshoot the DTC first
  1. Test the battery (see BATTERY TEST ).

    Is the battery OK? 

    YES  -Go to step 2.

    NO  -Charge or replace the battery (see BATTERY REMOVAL AND INSTALLATION ) as needed, then recheck.

  2. Connect the HDS to the data link connector.
  3. Press the engine start/stop button to select the ON mode, then wait for 10 seconds.
  4. Make sure the HDS can communicate with the body electrical system.

    Is communication possible? 

    YES  -Go to step 5.

    NO  -Do the MICU unit input test (see MICU INPUT TEST ).

  5. Check for body electrical system DTCs with the HDS (see GENERAL TROUBLESHOOTING INFORMATION ).

    Are any DTCs indicated? 

    YES  -Troubleshoot the indicated body electrical system DTC(s), and retest.

    NO  -Go to step 6.

  6. Press the engine start/stop button to select the OFF mode.
  7. Check the connection at the BSI control unit 16P connector.

    Is the connection OK? 

    YES  -Go to step 8.

    NO  -Repair the poor connection, and recheck.

  8. Disconnect the BSI control unit 16P connector.
  9. Press the engine start/stop button to select the ON mode.
  10. Measure the voltage between BSI control unit 16P connector terminals No. 7 and No. 10.
    Fig 1: Measuring Voltage Between BSI Control Unit 16P Connector Terminals No. 7 And 10
    G08078338Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    YES  -Go to step  12.

    NO  -Go to step 11.

  11. Measure the voltage between BSI control unit 16P connector terminal No. 10 and body ground.
    Fig 2: Measuring Voltage Between BSI Control Unit 16P Connector Terminal No. 10 And Body Ground
    G08078339Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    YES  -Repair an open in the wire between the BSI control unit and ground (G601).

    NO  -Repair an open or short to power in the wire between the driver's under-dash fuse/relay box and the BSI control unit.

  12. Press the engine start/stop button to select the OFF mode.
  13. Disconnect driver's under-dash fuse/relay box connector P (20P).
  14. Check for continuity between driver's under-dash fuse/relay box connector P (20P) terminal No. 6 and BSI control unit 16P connector terminal No. 6, and between driver's under-dash fuse/relay box connector P (20P) terminal No. 5 and BSI control unit 16P connector terminal No. 5.
    Fig 3: Checking Continuity Between Driver'S Under-Dash Fuse/Relay Box Connector P (20P) Terminal No. 6 And BSI Control Unit 16P Connector Terminal No. 6
    G08078340Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Go to step 15.

    NO  -Repair an open in the wire between the driver's under-dash fuse/relay box and the BSI control unit.

  15. Reconnect driver's under-dash fuse/relay box connector P (20P).
  16. Reconnect the BSI control unit 16P connector.
  17. Press the engine start/stop button to select the ON mode, then wait for 10 seconds.
  18. Check that the HDS can communicate with the BSI system.

    Is communication possible? 

    YES  -The system is OK at this time.

    NO  -Replace the BSI control unit (see BSI CONTROL UNIT REMOVAL/INSTALLATION  ).

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