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Code 13

WARNING: This page is about a different car, the 1995 Lexus SC 400 and 1995 Lexus SC 300. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: During testing, if codes other than Code 13 are displayed, disregard them.
  1. Disconnect negative battery cable. Wait at least 90 seconds. Remove steering wheel pad. See STEERING WHEEL PAD & SPIRAL CABLE  under REMOVAL & INSTALLATION. Disconnect passenger-side air bag connector, accessible through finish plate inside panel inside glove box. See Figure.
  2. Measure resistance between terminals of spiral cable upper connector (spiral cable side of connector). If resistance is less than 1000 ohms, go to step 7). If resistance is 1000 ohms or more, connect jumper wire between terminals of spiral cable upper connector (spiral cable side).
  3. Connect jumper wire between terminals of passenger-side air bag connector (harness side). Reconnect negative battery cable. Clear codes. See CLEARING CODES  under SELF-DIAGNOSTIC SYSTEM. Turn ignition switch to LOCK position. Wait at least 20 seconds. Disconnect jumper wire from spiral cable upper connector.
  4. Turn ignition switch to ACC or ON position. Wait at least 20 seconds. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ACC or ON position. Wait at least 20 seconds. Connect jumper wire between terminals 7 (Tc) and 5 (E1) of DLC. See Figure. If Code 13 is present, replace center air bag sensor.
  5. If Code 13 is not present, turn ignition switch to LOCK position. Disconnect negative battery cable. Wait at least 90 seconds. Reconnect spiral cable upper connector (steering wheel pad). Reconnect negative battery cable. Clear codes. See CLEARING CODES  under SELF-DIAGNOSTIC SYSTEM. Turn ignition switch to LOCK position. Wait at least 20 seconds.
  6. Turn ignition switch to ACC or ON position. Wait at least 20 seconds. Connect jumper wire between terminals 7 (Tc) and (E1) of DLC. See Figure. If Code 13 is not present, go to next step. If Code 13 is present, replace steering wheel pad.
  7. Disconnect spiral cable lower connector. Release shorting bar spring (air bag activation prevention mechanism) built into spiral cable connector. See RELEASING SHORTING BAR SPRING  under DIAGNOSIS.
  8. Measure resistance between terminals of spiral cable upper connector (spiral cable side of connector). If resistance is not infinite, replace spiral cable. If resistance is infinite, disconnect center air bag sensor connector. Release shorting bar spring (air bag activation prevention mechanism) built into center air bag sensor connector.
  9. Measure resistance between terminals of spiral cable lower connector (center air bag sensor side of connector). If resistance is not infinite, replace harness between center air bag sensor and spiral cable.
  10. If resistance is infinite, reconnect center air bag sensor connector. Measure resistance between terminals of spiral cable lower connector (center air bag sensor side of connector).
  11. If resistance is less than 1000 ohms, replace center air bag sensor. If resistance is 1000 ohms or more, system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT  under DIAGNOSIS.
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