DTC 73-12: Open in the Driver's E-pretensioner Motor

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 doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that all the required components were replaced with new components, of the correct part number, and that they were properly installed (see COMPONENT REPLACEMENT/INSPECTION AFTER DEPLOYMENT ).
Before doing this troubleshooting procedure, review SRS PRECAUTIONS AND PROCEDURES and GENERAL TROUBLESHOOTING INFORMATION .

Clear the DTCs with the HDS (see HOW TO CLEAR DTCS ).
Turn the ignition switch to ON (II), then wait for 10 seconds.
Check for DTCs with the HDS (see HOW TO CLEAR DTCS ).
Is DTC 73-12 indicated?

YES -Go to step 4.

NO -Intermittent failure, the system is OK at this time. Go to TROUBLESHOOTING INTERMITTENT FAILURES . If another DTC is indicated, troubleshoot the DTC.
Turn the ignition switch to LOCK (0).
Disconnect E-pretensioner unit connector A (5P) from the E-pretensioner unit (see E-PRETENSIONER UNIT REPLACEMENT ).
Measure the resistance between E-pretensioner unit connector A (5P) terminals No. 1 and No. 4.

Fig 1: Measuring Resistance Between E-Pretensioner Unit Connector (5P) Terminals No. 1 And No. 4
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 1.0 Ω?

YES -Faulty E-pretensioner unit or poor connection at E-pretensioner unit connector A (5P) and the E-pretensioner unit. Check the connection between the connector and the E-pretensioner unit. If the connection is OK, replace the E-pretensioner unit (see E-PRETENSIONER UNIT REPLACEMENT ).

NO -Go to step 7.
Turn the ignition switch to LOCK (0).
Disconnect the floor wire harness 2P connector from the driver's E-pretensioner motor (see FRONT SEAT BELT REPLACEMENT ).
Measure the resistance between driver's E-pretensioner motor 2P connector terminals No. 1 and No. 2.

Fig 2: Measuring Resistance Between Driver's E-Pretensioner Motor 2P Connector Terminals No. 1 And No. 2
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 1.0 Ω?

YES -Open in the floor wire harness; replace the floor wire harness, then clear the DTC.

NO -Faulty driver's E-pretensioner motor; replace the driver's seat belt (see FRONT SEAT BELT REPLACEMENT ), then clear the DTC.