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Driver's door key cylinder switch circuit troubleshooting

NOTE: Before troubleshooting, check the B-CAN DTCs. If any DTC is indicated, refer to the B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ), and troubleshoot the indicated DTC(s) first.
  1. Turn the ignition switch to ON (II).
  2. Disconnect the 10P connector from the driver's door lock actuator/knob switch.
  3. Connect driver's door lock actuator/knob switch 10P connector terminal No. 6 and body ground with a jumper wire.
    Fig 1: Connecting Driver's Door Lock Actuator/Knob Switch 10P Connector Terminal No. 6 And Body Ground With Jumper Wire
    G06953908Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Select SECURITY with the HDS, and enter the DATA LIST.
  5. Check the ON/OFF information of the DRIVER'S DOOR KEY CYLINDER SWITCH (LOCK) in the DATA LIST.

    Is data list value indicated ON? 

    YES  -Go to step  6.

    NO  -Go to step  8.

  6. Test the door key cylinder switch (see DOOR KEY CYLINDER SWITCH TEST  ).

    Is the switch OK? 

    YES  -Go to step  7.

    NO  -Faulty driver's door key cylinder switch; replace the door latch (see DOOR LATCH REPLACEMENT ).

  7. Check for continuity between driver's door lock actuator/knob switch 10P connector terminal No. 10 and body ground.
    Fig 2: Checking Continuity Between Driver's Door Lock Actuator/Knob Switch 10P Connector Terminal No. 10 And Body Ground
    G06953909Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Faulty MICU; replace the under-dash fuse/relay box.

    NO  -Repair an open or high resistance in the wire or poor ground (G501).

  8. Connect under-dash fuse/relay box connector F (12P) terminal No. 4 and body ground with a jumper wire.
    Fig 3: Connecting Under-Dash Fuse/Relay Box Connector F (12P) Terminal No. 4 And Body Ground With Jumper Wire
    G06953910Courtesy of AMERICAN HONDA MOTOR CO., INC.
  9. Check the ON/OFF information of the DRIVER'S DOOR KEY CYLINDER SWITCH (LOCK) in the DATA LIST.

    Is 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.