DTC 76-61: No Signal From the E-Pretensioner Unit; DTC 76-62: Non-Stipulated Response Data From the E-Pretensioner Unit

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 76-61 or 76-62 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.
Check the TECH (10 A) fuse in the auxiliary under-hood fuse/relay box and the No. 5 (30 A) fuse and the No. 6 (30 A) fuse in the main under-hood fuse box.
Are the fuses OK?

YES -Go to step 6.

NO -Replace the faulty fuse. If the problem is still present, short to ground in the auxiliary under-hood fuse/relay box or main under-hood fuse box circuit.
Turn the ignition switch to LOCK (0).
Disconnect E-pretensioner unit connector B (14P) from the E-pretensioner unit (see E-PRETENSIONER UNIT REPLACEMENT ).
Turn the ignition switch to ON (II).
Measure the voltage between body ground and E-pretensioner unit connector B (14P) terminal No. 8.

Fig 1: Measuring Voltage Between Body Ground And E-Pretensioner Unit Connector B (14P) Terminal No. 8
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES -Go to step 9.

NO -Open between the TECH (10 A) fuse in the auxiliary under-hood fuse/relay box and E-pretensioner unit connector B (14P) terminal No. 8.
Measure the voltage between body ground and E-pretensioner unit connector B (14P) terminal No. 12.

Fig 2: Measuring Voltage Between Body Ground And E-Pretensioner Unit Connector B (14P) Terminal No. 12
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES -Go to step 10.

NO -Open between the No. 6 (30 A) fuse in the main under-hood fuse box and E-pretensioner unit connector B (14P) terminal No. 12.
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 voltage between body ground and E-pretensioner unit connector A (5P) terminal No. 2.

Fig 3: 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 -Go to step 13.

NO -Open between No. 5 (30 A) fuse in the main under-hood fuse box and E-pretensioner unit connector A (5P) terminal No. 2.
Turn the ignition switch to LOCK (0).
Measure the resistance between body ground and E-pretensioner unit connector B (14P) terminals No. 10 and No. 11 individually.

Fig 4: Measuring Resistance Between Body Ground And E-Pretensioner Unit Connector B (14P) Terminals No. 10 And No. 11
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 1.0 Ω?

YES -Go to step 15.

NO -Open between the No. 10 terminal of E-pretensioner unit connector B (14P) and body ground, or between the No. 11 terminal of E-pretensioner unit connector B (14P) and body ground or poor connection at G605.
Measure the resistance between body ground and E-pretensioner unit connector A (5P) terminal No. 5.

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

Is there less than 1.0 Ω?

YES -Go to step 16.

NO -Open between the No. 5 terminal of E-pretensioner unit connector A (5P) and body ground or poor connection G605.
Disconnect the negative cable from the battery, then wait at least 3 minutes.
Disconnect SRS unit connect B (39P) from the SRS unit (see DISCONNECTING SYSTEM CONNECTORS ).
Disconnect the ODS unit harness 18P connector (A) from the ODS unit (B).

Fig 6: Identifying ODS Unit And ODS Unit Harness 18P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the resistance between body ground and SRS unit connector B (39P) terminal No. 1.

Fig 7: Measuring Resistance Between Body Ground And SRS Unit Connector B (39P) Terminal No. 1
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there an open circuit or at least 1 MΩ?

YES -Go to step 20.

NO -Short to ground between SRS unit connector B (39P) terminal No. 1 and E-pretensioner unit connector B (14P) terminal No. 6.
Measure the resistance between SRS unit connector B (39P) terminal No. 1 and E-pretensioner unit connector B (14P) terminal No. 6.

Fig 8: Measuring Resistance Between SRS Unit Connector B (39P) Terminal No. 1 And E-Pretensioner Unit Connector B (14P) Terminal No. 6
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 1.0 Ω?

YES -Faulty E-pretensioner unit; replace the E-pretensioner unit (see E-PRETENSIONER UNIT REPLACEMENT ).

NO -Open between SRS unit connector B (39P) terminal No. 1 and E-pretensioner unit connector B (14P) terminal No. 6.