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Left rear door switch circuit troubleshooting

WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn the ignition switch to ON (II).
  2. With the left rear door closed, select SECURITY with the HDS, and enter the DATA LIST.
  3. Check the ON/OFF information of the DRIVER'S REAR DOOR SWITCH in the DATA LIST.

    Is the data list value indicated ON? 

    YES  -Go to step 4.

    NO  -Go to step  9.

  4. Remove the left rear door switch.
  5. Disconnect the left rear door switch 1P connector.
  6. Check for continuity between left rear door switch 1P connector and switch ground.
    Fig 1: Checking Continuity Between Left Rear Door Switch 1P Connector And Switch Ground
    G00501820Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there no continuity when the switch is pushed and is there continuity when the switch is released? 

    YES  -Go to step 7.

    NO  -Faulty left rear door switch; replace the left rear door switch.

  7. Disconnect under-dash fuse/relay box connector C (49P).
  8. Check for continuity between under-dash fuse/relay box connector C (49P) terminal No. 26 and body ground.
    Fig 2: Checking Continuity Between under-dash fuse/relay box connector C (49P) Terminal No. 26 And Body Ground
    G00501821Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Repair a short to ground in the wire.

    NO  -Faulty MICU; replace the under-dash fuse/relay box.

  9. Remove the left rear door switch.
  10. Disconnect the left rear door switch 1P connector.
  11. Check for continuity between the left rear door switch 1P connector and switch ground.
    Fig 3: Checking Continuity Between Left Rear Door Switch 1P Connector And Switch Ground
    G00501820Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there no continuity when the switch is pushed and is there continuity when the switch is released? 

    YES  -Go to step 12.

    NO  -Faulty left rear door switch; replace the left rear door switch.

  12. Connect under-dash fuse/relay box connector C (49P) terminal No. 26 and body ground with a jumper wire.
    Fig 4: Connecting Under-Dash Fuse/Relay Box Connector C (49P) Terminal No. 26 And Body Ground
    G00501822Courtesy of AMERICAN HONDA MOTOR CO., INC.
  13. Check the ON/OFF information of the DRIVER'S REAR DOOR SWITCH in the DATA LIST.

    Is the data list value indicated ON? 

    YES  -Repair an open or high resistance in the wire.

    NO  -Faulty MICU; replace the under-dash fuse/relay box.

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