DTC 71-2x ("x" can be 0 thru 9 or A thru F): Short in Driver's Seat Position Sensor ('06-08 models)

NOTE: Before doing this troubleshooting procedure, review SRS Precautions and Procedures (see PRECAUTIONS AND PROCEDURES ) and General Troubleshooting Information (see DTC (DIAGNOSTIC TROUBLE CODES) ).

Clear the DTC memory (see CLEAR THE DTC MEMORY WITH THE HDS ).
Turn the ignition switch ON (II), and check the SRS indicator comes on for about 6 seconds and then goes off.
Does the SRS indicator stay on, and is DTC 71-2x indicated?

YES -Go to step 3.

NO -Intermittent failure, system is OK at this time. Go to TROUBLESHOOTING INTERMITTENT FAILURES . If another DTC is indicated, troubleshoot the DTC.
Turn the ignition switch OFF. Disconnect the negative cable from the battery, then wait for 3 minutes.
Disconnect the driver's seat wire harness 2P connector from the driver's seat position sensor (A).

Fig 1: Identifying Driver's Seat Position Sensor
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Reconnect the negative cable to the battery.
Clear the DTC memory.
Read the DTC (see DTC (DIAGNOSTIC TROUBLE CODES) ).
Is DTC 71-2x indicated?

YES -Go to step 8.

NO -Faulty driver's seat position sensor; replace the driver's seat position sensor.
Turn the ignition switch OFF. Disconnect the negative cable from the battery, then wait for 3 minutes.
Disconnect both seat belt tensioner 4P connectors (see step 6 ).
Disconnect SRS unit connector B (28P) from the SRS unit (see step 7 ).
Measure the resistance between the No. 16 and No. 28 terminals of SRS unit connector B (28P). There should be an open circuit or at least 1MΩ.

Fig 2: Measuring Resistance Between No. 16 And No. 28 Terminals Of SRS Unit Connector B (28P)
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES -Go to step 12.

NO -Short in the floor wire harness; replace the floor wire harness.
Measure the resistance between the No. 16 terminal of SRS unit connector B (28P) and body ground, and between the No. 28 terminal and body ground. There should be an open circuit or at least 1 MΩ.

Fig 3: Measuring Resistance Between No. 16 Terminal Of SRS Unit Connector B (28P) And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

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

NO -Short in the floor wire harness; replace the floor wire harness.