DTC 71-2x: ("X" Can Be 0 Thru 9 Or A Thru F) Short In the Driver's Seat Position Sensor

WARNING: This page is about a different car, the 2013 Honda Fit, 2012 Honda Fit, 2011 Honda Fit, 2010 Honda Fit, and 2009 Honda Fit. 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 PRECAUTIONS AND PROCEDURES , General Troubleshooting Information (see DTC (DIAGNOSTIC TROUBLE CODES) ) and BATTERY TERMINAL DISCONNECTION AND RECONNECTION .
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.
Information marked with an asterisk (*1) applies to '09-11 models.
Information marked with an asterisk (*2) applies to '12 model.

Raise the driver's seat all the way up.
Clear the DTCs with the HDS (see CLEAR THE DTC MEMORY ).
Turn the ignition switch to ON (II), then wait for 10 seconds.
Check for the DTCs with the HDS (see READING THE DTC ).
Is DTC 71-2x indicated?

YES - Go to step 5.

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), then wait for 10 seconds.
Remove the seat recline cover (see FRONT SEAT RECLINE COVER REMOVAL/INSTALLATION ).
Disconnect the driver's seat position sensor 2P connector (A) on the driver's seat position sensor harness.

Fig 1: Identifying Driver's Seat Wire Harness 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Clear the DTCs with the HDS (see CLEAR THE DTC MEMORY ).
Turn the ignition switch to ON (II), then wait for 10 seconds.
Check for the DTCs with the HDS (see READING THE DTC ).
Is DTC 71-2x indicated?

YES - Go to step 11.

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 the negative cable from the battery, then wait at least 3 minutes.
Disconnect SRS unit connector B (39P) from the SRS unit (see step 10 under Disconnecting System Connectors ).
Measure the resistance between body ground and SRS unit connector B (39P) terminal No. 23*1 (No. 28*2).
Asterisk (*1) applies to '09-11 models and, (*2) applies to '12 model.

Fig 2: Measuring Resistance Between Body Ground And SRS Unit Connector B (39P) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there an open circuit, or at least 1 MΩ ?

YES - Faulty driver's seat position sensor or SRS unit; replace the driver's seat position sensor (see DRIVER'S SEAT POSITION SENSOR REPLACEMENT ), then clear the DTC. If the problem is still present, replace the SRS unit (see SRS UNIT REPLACEMENT ).

NO - Short to ground in the floor wire harness or the driver's seat position sensor harness; replace the faulty harness, then clear the DTC.