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Diagnostic Procedure

WARNING: This page is about a different car, the 2003 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition switch to LOCK position. Disconnect negative battery cable. Wait at least 90 seconds. Access and disconnect air bag sensor assembly connector. See AIR BAG SENSOR ASSEMBLY  under REMOVAL & INSTALLATION.
  2. Measure resistance between ground and air bag sensor assembly connector C5, terminal No. 19 (circuit Tc, White/Green wire). See Figure. If resistance is more than one megohm, replace air bag sensor assembly. If resistance is less than one megohm, repair or replace harness or connector.
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