Driver's door key cylinder switch circuit troubleshooting
WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. 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 (see
TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
), and troubleshoot the indicated DTC(s) first.
- Turn the ignition switch to ON (II).
- Disconnect the driver's door latch 10P connector.
- Connect driver's door latch 10P connector terminal No. 9 and body ground with a jumper wire.
- 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 information indicator ON?
YES -Go to step 6.
NO -Go to step 8.
- Test the driver's door key cylinder switch (see Door Lock Switch Test
).
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 latch 10P connector terminal No. 5 and body ground.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Replace the driver's MPCS unit (see DRIVER'S MPCS UNIT INPUT TEST ).
NO -Repair an open or high resistance in the wire or poor ground (G601).
- Connect driver's MPCS unit connector A (40P) terminal No. 22 and body ground with a jumper wire.
- Check the ON/OFF information of the DRIVER'S DOOR KEY CYLINDER SWITCH (LOCK) in the DATA LIST.
Is information indicator ON?
YES -Repair an open or high resistance in the wire.
NO -Replace the driver's MPCS unit (see DRIVER'S MPCS UNIT INPUT TEST ).