Driver's Door Key Cylinder 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.

NOTE: Before troubleshooting, check the B-CAN DTCs. If any DTC is indicated, refer to the B-CAN System Diagnosis Test Mode A, and troubleshoot the indicated DTCs first. (See TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Turn the ignition switch to ON (II).
Disconnect the 10P connector from the driver's door lock actuator/knob switch.
Connect driver's door lock actuator/knob switch 10P connector terminal No. 9 and body ground with a jumper wire.

Fig 1: Connecting Driver's Door Lock Actuator/Knob Switch 10P Connector Terminal No. 9 And Body Ground With A Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Select SECURITY with the HDS, and enter the DATA LIST.
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
Test the door key cylinder switch.
Is the switch OK?

YES - Go to step 7

NO - Faulty driver's door key cylinder switch; replace the driver's door latch (see FRONT DOOR LATCH REPLACEMENT ).
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 MICU; replace the under-dash fuse/relay box.
- For USA model (see USA MODELS ).
- For Canada model (see CANADA MODELS ).
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. 3 and body ground with a jumper wire.

Fig 3: Connecting Under-Dash Fuse/Relay Box Connector E (12P) Terminal No. 3 And Body Ground With A Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.
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.
- For USA model (see USA MODELS ).
- For Canada model (see CANADA MODELS ).