Disconnect the U2o connector (A) from the SRS unit (B). Do not disconnect the special tool (2 ohm) from the SPi connector. Check resistance between the No. 7 and No. 18 terminals of the U2o connector. There should be 2.0 - 3.0 ohm. U2o CONNECTOR Wire side of female terminals Is the resistance as specified? YES - Faulty SRS unit or poor contact at the U2o connector and the SRS unit; check the connection at the U2o connector and SRS unit. If the connector is OK, replace the SRS unit. NO - Open or increased resistance in the floor wire harness; replace the floor wire harness.

DTC 12-3: Short to Another Wire or Decreased Resistance in Front Passenger's Side Airbag Inflator (With OPDS Unit Model) Erase the DTC memory (see page 23-38). Turn the ignition switch ON (II), and check that the SRS indicator light comes on for about 6 seconds and then goes off. Does the SRS indicator light stay on? YES - Go to step 3. NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures (see page 23-38). Turn the ignition switch OFF. Disconnect the battery negative cable and wait for 3 minutes. Disconnect the SPi connector (A) from the front passenger's side airbag (B). Connect the special tool (2 ohm) to the SPi connector.