DTC 71-22
DTC 71-22: Short to Power in Driver's Seat Position Sensor1. Erase the DTC memory.
2. 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 71-22 indicated?
YES - Go to step 3.
NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures. Diagnostic Strategies If another DTC is indicated, go to the DTC troubleshooting index. DTC List - Supplemental Restraint System
3. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
4. Disconnect the floor wire harness 2P connector from the driver's seat position sensor (A).
5. Disconnect both seat belt tensioner 4P connectors.
6. Disconnect SRS unit connector B from the SRS unit.
7. Check the voltage 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 1 V or less.
Is the voltage as specified?
YES - Faulty driver's seat position sensor or SRS unit; replace the driver's seat position sensor. If the problem is still present, replace the SRS unit.
NO - Short to power in the floor wire harness or seat position sensor harness; replace the faulty ha mess.