Right Rear 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 right rear door lock knob switch in LOCK position, select SECURITY with the HDS, and enter the DATA LIST.
Check the ON/OFF information of the PASSENGER'S REAR 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 right rear door lock actuator/knob switch 10P connector.
Check the ON/OFF information of the PASSENGER'S REAR DOOR LOCK KNOB SWITCH (UNLOCK) in the DATA LIST.
Is the data list value indicated OFF?

YES - Faulty right rear door lock knob switch; replace the right rear door latch (see REAR DOOR LATCH REPLACEMENT ).

NO - Go to step 6
Disconnect under-dash fuse/relay box connector C (49P).
Check for continuity between under-dash fuse/relay box connector C (49P) terminal No. 46 and body ground.

Fig 1: Checking For Continuity Between Under-Dash Fuse/Relay Box Connector C (49P) Terminal No. 46 And Body Ground
Courtesy 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:
- For USA model (see USA MODELS ).
- For Canada model (see CANADA MODELS ).
Disconnect the right rear door lock actuator/knob switch 10P connector.
Connect right rear door lock actuator/knob switch 10P connector terminal No. 8 and body ground with a jumper wire.

Fig 2: Connecting Right Rear Door Lock Actuator/Knob Switch 10P Connector Terminal No. 8 And Body Ground With A Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check the ON/OFF information of the PASSENGER'S REAR DOOR LOCK KNOB SWITCH (UNLOCK) in the DATA LIST.
Is data list value indicated ON?

YES - Go to step 11

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

Fig 3: Checking For Continuity Between Right Rear Door Lock Actuator/Knob Switch 10P Connector Terminal No. 10 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES - Faulty right rear door lock knob switch; replace the right rear door latch (see REAR DOOR LATCH REPLACEMENT ).

NO - Repair an open or high resistance in the wire or poor ground (G603).
Connect under-dash fuse/relay box connector C (49P) terminal No. 46 and body ground with a jumper wire.

Fig 4: Connecting Under-Dash Fuse/Relay Box Connector C (49P) Terminal No. 46 And Body Ground With A Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check the ON/OFF information of the PASSENGER'S REAR 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 ).