DTC 62-1x ("x" can be 0 thru 9 or A thru F): Open in the Front Passenger's Seat Belt Buckle Switch

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 , GENERAL TROUBLESHOOTING INFORMATION , and Battery Terminal Disconnection and Reconnection (see USING THE GR8 BATTERY DIAGNOSTIC STATION ).
Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS unit software (see SRS UNIT UPDATE ), and retest.

Clear the DTCs with the HDS (see HOW TO CLEAR DTCS ).
Turn the ignition switch to ON (II), then buckle and unbuckle the front passenger's seat belt several times.
Check for DTCs with the HDS (see HOW TO CLEAR DTCS ).
Is DTC 62-1x 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.
From the HDS Main menu, select SRS, then PARAMETER INFORMATION. In the PARAMETER INFORMATION Menu, select Buckle Switch, Seat Position Sensor and check the status on the HDS screen for FRONT LEFT SEAT BELT BUCKLE SWITCH when the seat belt is buckled, and unbuckled.
- If UNBUCKLED is indicated only when the front passenger's seat belt is unbuckled, go to step 5.
- If BUCKLED is indicated only when the front passenger's seat belt is buckled, go to step 11.
- If OPEN is indicated only when the front passenger's seat belt is buckled and unbuckled, go to step 18.
Turn the ignition switch to LOCK (0).
Disconnect the front passenger's seat wire harness 3P connector (A) from the front passenger's seat belt buckle switch 3P connector (B).

Fig 1: Identifying Front Passenger's Seat Wire Harness 3P Connector And Belt Buckle Switch 3P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Buckle the front passenger's seat belt. Measure the resistance between front passenger's seat belt buckle switch 3P connector terminals No. 1 and No. 3.

Fig 2: Measuring Resistance Between Front Passenger's Seat Belt Buckle Switch 3P Connector Terminals No. 1 And No. 3
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 1.0 Ω?

YES -Go to step 8.

NO -Faulty front passenger's seat belt buckle switch; replace the front passenger's seat belt buckle assembly, then clear the DTC.
Disconnect the negative cable from the battery, then wait for 3 minutes.
Disconnect SRS unit connector B (39P) from the SRS unit (see DISCONNECTING SYSTEM CONNECTORS ).
Measure the resistance between SRS unit connector B (39P) terminal No. 22 and front passenger's seat wire harness 3P connector terminal No. 1.

Fig 3: Measuring Resistance Between SRS Unit Connector B (39P) Terminal No. 22 And Front Passenger'S Seat 3P Connector Terminal No. 1
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 1.0 Ω?

YES -Faulty SRS unit or poor connection at SRS unit connector B (39P) and the SRS unit. Check the connection between the connector and the SRS unit. If the connection is OK, replace the SRS unit (see SRS UNIT REPLACEMENT ).

NO -Open in the front passenger's seat wire harness, floor wire harness, or poor connection. Check the connection; if the connection is OK, replace the faulty harness, then clear the DTC.
Turn the ignition switch to LOCK (0).
Disconnect the front passenger's seat wire harness 3P connector (A) from the front passenger's seat belt buckle switch 3P connector (B).

Fig 4: Identifying Front Passenger's Seat Wire Harness 3P Connector And Belt Buckle Switch 3P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Unbuckle the front passenger's seat belt.
Measure the resistance between front passenger's seat belt buckle switch 3P connector terminals No. 2 and No. 3.

Fig 5: Measuring Resistance Between Front Passenger's Seat Belt Buckle Switch 3P Connector Terminals No. 2 And No. 3
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 1.0 Ω?

YES -Go to step 15.

NO -Faulty front passengers seat belt buckle switch; replace the front passenger's seat belt buckle assembly (see FRONT SEAT BELT BUCKLE ), then clear the DTC.
Disconnect the negative cable from the battery, then wait for 3 minutes.
Disconnect SRS unit connector B (28P) from the SRS unit (see DISCONNECTING SYSTEM CONNECTORS ).
Measure the resistance between SRS unit connector B (39P) terminal No. 21 and front passenger's seat wire harness 3P connector terminal No. 2.

Fig 6: Measuring Resistance Between SRS Unit Connector B (39P) Terminal No. 21 And Front Passenger's Seat 3P Connector Terminal No. 2
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 1.0 Ω?

YES -Faulty SRS unit or poor connection at SRS unit connector B (39P) and the SRS unit. Check the connection between the connector and the SRS unit. If the connection is OK, replace the SRS unit (see SRS UNIT REPLACEMENT ).

NO -Open in the front passenger's seat wire harness, floor wire harness, or poor connection. Check the connection; if the connection is OK, replace the faulty harness.
Turn the ignition switch to LOCK (0).
Disconnect the front passenger's seat wire harness 3P connector (A) from the front passenger's seat belt buckle switch 3P connector (B).

Fig 7: Identifying Front Passenger's Seat Wire Harness 3P Connector And Belt Buckle Switch 3P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Unbuckle the front passenger's seat belt.
Measure the resistance body ground and between front passenger's seat wire harness 3P connector terminal No. 3.

Fig 8: Measuring Resistance Body Ground And Between Front Passenger's Seat Wire Harness 3P Connector Terminal No. 3
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there less than 1.0 Ω?

YES -Faulty front passenger's seat belt buckle switch; replace the front passenger's seat belt buckle assembly (see FRONT SEAT BELT BUCKLE ), then clear the DTC.

NO -Open in the front passenger's seat wire harness, floor wire harness, or poor connection. Check the connection; if the connection is OK, check for a poor ground at G605. If the ground is OK, replace the faulty harness, then clear the DTC.