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Home › Honda › 2007 › Element SC, Automatic › Repair and Diagnosis › Body & Frame › Door Locks › Immobilizer System › Troubleshooting › '07 USA Models

'07 USA Models

  1. Turn the ignition switch ON (II) with a programmed key.
  2. Check to see if the immobilizer indicator comes on.

    Does the indicator come on? 

    YES  - Go to step  3.

    NO  - Go to step  12.

  3. Check the immobilizer indicator operation.

    Does the indicator come on for 2 seconds, then go off? 

    YES  - Go to step  4.

    NO  - Go to step  6.

  4. Try to crank the engine.

    Does the starter motor operate? 

    YES  - Go to step  5.

    NO  - Check the starter motor.

  5. Try to start the engine.

    Does the engine start? 

    YES  - Check the Status Log in the immobilizer info with the HDS (see STATUS LOG  ). If the Status Log is not available, the immobilizer system is OK at this time.

    NO  - Go to step  24.

  6. Check to see if the immobilizer indicator comes on and blinks.

    Does the indicator blink? 

    YES  - Go to step  24.

    NO  - Go to step  7.

  7. Disconnect the immobilizer control unit-receiver 7P connector.
  8. Check to see if the immobilizer indicator goes off.

    Does the indicator go off? 

    YES  - Substitute a known-good immobilizer control unit-receiver and/or ECM/PCM.

    NO  - Go to step  9.

  9. Turn the ignition switch OFF.
  10. Remove the gauge control module, and disconnect gauge control module 36P connector (see GAUGE CONTROL MODULE REPLACEMENT ).
  11. Check for continuity between the immobilizer control unit-receiver 7P connector No. 5 (IMOLMP) terminal and body ground.

    Is there continuity? 

    YES  - Repair a short to ground in the wire.

    NO  - Faulty immobilizer indicator, replace the gauge control module.

    Fig 1: Checking Continuity Between Immobilizer Control Unit-Receiver 7P Connector Terminal 5 & Body Ground
    G05451510Courtesy of AMERICAN HONDA MOTOR CO., INC.
  12. Try to start the engine.

    Does the engine start? 

    YES  - Go to step  13.

    NO  - Go to step  18.

  13. Turn the ignition switch OFF.
  14. Disconnect the immobilizer control unit-receiver 7P connector.
  15. Measure voltage between the immobilizer control unit-receiver 7P connector No. 7 (+B) terminal and body ground.

    Is there battery voltage? 

    YES  - Go to step  16.

    NO  - Faulty No. 9 (10 A) fuse in the under-hood fuse/relay box. If the fuse is OK, check for an open in the wire between the immobilizer control unit-receiver and under-hood fuse/relay box.

    Fig 2: Measuring Voltage Between Immobilizer Control Unit-Receiver 7P Connector Terminal 7 & Body Ground
    G05451511Courtesy of AMERICAN HONDA MOTOR CO., INC.
  16. Remove the gauge control module, and disconnect gauge control module 36P connector (see GAUGE CONTROL MODULE REPLACEMENT ).
  17. Check for continuity between the immobilizer control unit-receiver 7P connector No. 5 (IMOLMP) terminal and gauge control module 36P connector No. 7 terminal.

    Is there continuity? 

    YES  - Faulty immobilizer indicator, replace the gauge control module.

    NO  - Repair an open in the wire.

    Fig 3: Checking Continuity Between Immobilizer Control Unit-Receiver Terminal 5 & Gauge Control Module Terminal 7
    G05451512Courtesy of AMERICAN HONDA MOTOR CO., INC.
  18. Turn the ignition switch OFF.
  19. Disconnect the immobilizer control unit-receiver 7P connector.
  20. Turn the ignition switch ON (II).
  21. Measure voltage between the immobilizer control unit-receiver 7P connector No. 6 (IG1) terminal and body ground.

    Is there battery voltage? 

    YES  - Go to step  22.

    NO  - Faulty No. 17 (15 A) fuse in the under-dash fuse/relay box. If the fuse is OK, check for an open in the wire between the immobilizer control unit-receiver and under-dash fuse/relay box.

    Fig 4: Measuring Voltage Between Immobilizer Control Unit-Receiver 7P Connector Terminal 6 & Body Ground
    G05451513Courtesy of AMERICAN HONDA MOTOR CO., INC.
  22. Turn the ignition switch OFF.
  23. Check for continuity between the immobilizer control unit-receiver 7P connector No. 1 (LG3) terminal and ECM/PCM connector E (31P) No. 3 terminal.

    Is there continuity? 

    YES  - Substitute a known-good immobilizer control unit-receiver and/or ECM/PCM.

    NO  - Repair an open in the wire. If the wire is OK, repair G101.

    Fig 5: Checking Continuity Between Immobilizer Control Unit-Receiver Terminal 1 & ECM/PCM Terminal 3
    G05451514Courtesy of AMERICAN HONDA MOTOR CO., INC.
  24. Turn the ignition switch OFF.
  25. Connect the HDS to the data link connector.
  26. Turn the ignition switch ON (II).
  27. Look at the System Check in the immobilizer Info with the HDS (see SYSTEM CHECK  ).

    Is the immobilizer system normal? 

    YES  - Go back to step  1.

    NO  - Go to step  28.

  28. Verify the System Check display on the HDS.
    • Harness short from the ECM/PCM to the immobilizer control unit-receiver. (IMOCD line short)
    • The communication was not good between the ECM/PCM and the immobilizer control unit-receiver by the battery voltage low.
    • The communication was not good between the immobilizer control unit-receiver and the ECM/PCM by influence of some noise.
    • Immobilizer control unit-receiver failure.
    • ECM/PCM failure.

    Does the HDS display this information? 

    YES  - Go to step  29.

    NO  - Go to step  33.

  29. Turn the ignition switch OFF.
  30. Disconnect the immobilizer control unit-receiver 7P connector.
  31. Short the SCS connector, then disconnect ECM/PCM connector E (31P).
  32. Check for continuity between the immobilizer control unit-receiver 7P connector No. 2 (IMOCD) terminal and body ground.

    Is there continuity? 

    YES  - Repair a short to ground in the wire.

    NO  - Substitute a known-good immobilizer control unit-receiver and/or ECM/PCM.

    Fig 6: Checking Continuity Between Immobilizer Control Unit-Receiver 7P Connector Terminal 2 & Body Ground
    G05451515Courtesy of AMERICAN HONDA MOTOR CO., INC.
  33. Verify the System Check display on the HDS.
    • Blown fuse
    • Harness open from the ECM/PCM and the immobilizer control unit-receiver.
    • The communication was not good between the ECM/PCM and the immobilizer control unit-receiver by battery voltage low.
    • The communication was not good between the immobilizer control unit-receiver and the ECM/PCM by influence of some noise.
    • Immobilizer control unit-receiver failure.
    • ECM/PCM failure.

    Does the HDS display this information? 

    YES  - Go to step  34.

    NO  - Check the Possible Failures shown or the System Check display (see SYSTEM CHECK  ).

  34. Turn the ignition switch OFF.
  35. Jump the SCS line with the HDS.
  36. Disconnect the immobilizer control unit-receiver 7P connector.
  37. Disconnect ECM/PCM connector E (31P).
  38. Check for continuity between the immobilizer control unit-receiver 7P connector No. 2 (IMOCD) terminal and ECM/PCM connector E (31P) No. 27 terminal.

    Is there continuity? 

    YES  - Substitute a known-good the immobilizer control unit-receiver and/or ECM/PCM.

    NO  - Repair an open in the wire.

    Fig 7: Checking Continuity Between Immobilizer Control Unit-Receiver Terminal 2 & ECM/PCM Terminal 27
    G05451516Courtesy of AMERICAN HONDA MOTOR CO., INC.
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