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Home >> Acura >> 2005 >> TSX Automatic >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> SRS (Supplemental Restraint System) >> DTC Troubleshooting >> DTC 71-1x ("x" can be 0 thru 9 or A thru F): Open in Driver's Seat Position Sensor ('06-08 models)

DTC 71-1x ("x" can be 0 thru 9 or A thru F): Open in Driver's Seat Position Sensor ('06-08 models)

Special Tools Required 

SRS inflator simulator 07SAZ-TB4011A

NOTE: Before doing this troubleshooting procedure, review SRS Precautions and Procedures (see PRECAUTIONS AND PROCEDURES  ) and General Troubleshooting Information (see DTC (DIAGNOSTIC TROUBLE CODES)  ).
  1. Clear the DTC memory (see CLEAR THE DTC MEMORY WITH THE HDS  ).
  2. Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

    Does the SRS indicator stay on, and is DTC 71-1x 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.

  3. Check the connection between the seat position sensor harness 2P connector and the driver's seat position sensor.
  4. Clear the DTC memory.
  5. Read the DTC (see DTC (DIAGNOSTIC TROUBLE CODES)  ).

    Is DTC 71-1x indicated? 

    YES  -Go to step 6.

    NO  -Intermittent failure, system is OK at this time. Go to TROUBLESHOOTING INTERMITTENT FAILURES  . If another DTC is indicated, troubleshoot the DTC.

  6. Turn the ignition switch OFF. Disconnect the negative cable from the battery, then wait for 3 minutes.
  7. 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
    G05489718Courtesy of AMERICAN HONDA MOTOR CO., INC.
  8. Connect the No. 1 and No. 2 terminals of the driver's seat wire harness 2P connector with a jumper wire.
  9. Disconnect both seat belt tensioner 4P connectors (see step  6 ).
  10. Disconnect SRS unit connector B (28P) from the SRS unit (see step  7 ).
  11. Measure the resistance between the No. 16 and No. 28 terminals of SRS unit connector B (28P). There should be 0-1.0 Ω.
    Fig 2: Measuring Resistance Between No. 16 And No. 28 Terminals Of SRS Unit Connector B (28P)
    G05489719Courtesy 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  -Open in the floor wire harness or seat position sensor harness; replace the faulty harness.