Driver's Door Lock Knob Switch Circuit Troubleshooting

WARNING: This page is about a different car, the 2013 Honda Fit, 2012 Honda Fit, 2011 Honda Fit, 2010 Honda Fit, and 2009 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.

Turn the ignition switch to ON (II).
With the driver's door lock knob switch in LOCK position, select SECURITY with the HDS, and enter the DATA LIST.
Check the ON/OFF information of the DRIVER'S DOOR LOCK KNOB SWITCH (UNLOCK) in the DATA LIST.
Is the data list value indicated ON?

YES - Go to step 4

NO - Go to step 8
Disconnect the driver's door lock actuator/knob switch 10P connector.
Check the ON/OFF information of the DRIVER'S DOOR LOCK KNOB SWITCH (UNLOCK) in the DATA LIST.
Is the data list value indicated OFF?

YES - Faulty driver's door lock knob switch; replace the driver's door latch (see FRONT DOOR LATCH REPLACEMENT ).

NO - Go to step 6
Disconnect under-dash fuse/relay box connector E (12P).
Check the ON/OFF information of the DRIVER'S DOOR LOCK KNOB SWITCH (UNLOCK) in the DATA LIST.
Is the data list value indicated OFF?

YES - Repair a short to ground in the wire

NO - Faulty MICU; replace the under-dash fuse/relay box:
- For USA model (see USA MODELS ).
- For Canada model (see CANADA MODELS ).
Disconnect the driver's door lock actuator/knob switch 10P connector.
Connect driver's door lock actuator/knob switch 10P connector terminal No. 7 and body ground with a jumper wire.

Fig 1: Connecting Driver's Door Lock Actuator/Knob Switch 10P Connector Terminal No. 7 And Body Ground With A Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check the ON/OFF information of the DRIVER'S DOOR LOCK KNOB SWITCH (UNLOCK) in the DATA LIST.
Is the data list value indicated ON?

YES - Go to step 11

NO - Go to step 12
Check for continuity between driver's door lock actuator/knob switch 10P connector terminal No. 5 and body ground.

Fig 2: Checking For Continuity Between Driver's Door Lock Actuator/Knob Switch 10P Connector Terminal No. 5 And Body Ground.
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Faulty driver's door lock knob switch; replace the driver's door latch (see FRONT DOOR LATCH REPLACEMENT ).

NO - Repair an open or high resistance in the wire or poor ground (G501).
Connect under-dash fuse/relay box connector E (12P) terminal No. 2 and body ground with a jumper wire.

Fig 3: Connecting Under-Dash Fuse/Relay Box Connector E (12P) Terminal No. 2 And Body Ground With A Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check the ON/OFF information of the DRIVER'S DOOR LOCK KNOB SWITCH (UNLOCK) 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:
- For USA model (see USA MODELS ).
- For Canada model (see CANADA MODELS ).