DTC 76-48: Faulty Power Supply to 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 , and Battery Terminal Disconnection and Reconnection (see USING THE GR8 BATTERY DIAGNOSTIC STATION ).

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 76-48 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).
Check the No. 5 (30 A) fuse in the under-hood fuse/relay box.
Are the fuses OK?

YES -Go to step 6.

NO -Replace the faulty fuse, then turn the ignition switch to ON (II), then wait for 10 seconds. If the fuse blows again, check for a short in the No. 5 (30 A) fuse circuit (floor wire harness, right engine compartment wire harness, or left engine compartment wire harness,); replace the faulty harness, then clear the DTC, and retest. If the DTC is still present, replace the main under-hood fuse box (see DTC B1065: RELAY CONTROL MODULE LOST COMMUNICATION WITH DRIVER'S MPCS UNIT (DRLOCKSW MESSAGE) ), then clear the DTC.
Disconnect the negative cable from the battery, then wait at least 3 minutes.
Remove the passenger's center console trim (see CENTER CONSOLE REMOVAL/INSTALLATION ).
Disconnect E-pretensioner unit connector A (5P) from the E-pretensioner unit (see E-PRETENSIONER UNIT REPLACEMENT ).
Reconnect the negative cable to the battery.
Turn the ignition switch to ON (II).
Measure the voltage between body ground and E-pretensioner unit connector A (5P) terminal No. 2.

Fig 1: Measuring Voltage Between Body Ground And E-Pretensioner Unit Connector (5P) Terminal No. 2
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES -Check the connections between E-pretensioner unit connector A (5P) and the E-pretensioner unit; if the connection is OK, replace the E-pretensioner unit (see E-PRETENSIONER UNIT REPLACEMENT ), then clear the DTC.

NO -Open in the harness between the No. 5 (30 A) fuse in the main under-hood fuse box and E-pretensioner unit connector A (5P) terminal No. 2 (floor wire harness, right engine compartment wire harness, or left engine compartment wire harness,); replace the faulty harness, then clear the DTC.