Restraints - DTCs 81-64/85-64 After SRS Control Replaced

SRS DTC 81-64 or 85-64 After SRS Unit Replacement

Just replaced the SRS unit in a '03-06 MDX, and now you've got either of these SRS DTCs?

^ SRS DTC 81-64 (FCU serial number ID code inconsistent) (internal failure of the front passenger's seat weight sensor unit)

^ SRS DTC 85-64 (FCU serial number ID code inconsistent) (internal failure of the OPDS unit)

To fix this problem, here's what you need to do:

1. Refer to the front passenger's weight sensor unit calibration procedure on page 23-32 of the '03-06 MDX S/M (Online, enter keyword SRS, select How to Troubleshoot the SRS from the list, and go to Calibrating the Front Passenger's Weight Sensor Unit ('03-06 Models.) Do steps 1 thru 3 of the calibration procedure.

2. Do step 4 of the procedure, and follow the screen prompts to initialize the seat weight sensor (SWS). After the initialization is done, turn the ignition switch to LOCK (0), then disconnect the HDS.

3. Wait 3 minutes, then reconnect the HDS, and turn the ignition switch to ON (II).

4. Continue with steps 5 thru 18 of the procedure to complete the calibration.