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Home >> Lexus >> 1994 >> SC 400 >> Repair and Diagnosis (Single Page) >> Restraints >> Air Bag, SRS >> Air Bag Restraint System >> Trouble Shooting >> Code 14

Code 14

NOTE: During testing, if codes other than Code 14 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 glove box. See Figure.
  2. Disconnect center air bag sensor connector. Measure resistance between terminals of spiral cable upper connector (spiral cable side of connector). If resistance is less than one ohm, go to step 5). If resistance is one ohm or more, go to next step.
  3. Disconnect spiral cable upper connector. Measure resistance between terminals of spiral cable upper connector (spiral cable side of connector). If resistance is less than one ohm, go to next step. If resistance is one ohm or more, replace spiral cable.
  4. Measure resistance between terminals of spiral cable lower connector (center air bag sensor side of connector). If resistance is less than one ohm, go to next step. If resistance is one ohm or more, replace harness between center air bag sensor and spiral cable.
  5. Reconnect center air bag sensor connector. Reconnect spiral cable lower connector. Connect a jumper wire between terminals of spiral cable upper connector (spiral cable side of connector). Connect a jumper wire between terminals of passenger-side air bag connector (harness side of connector). Reconnect negative battery cable. Wait at least 2 seconds.
  6. Turn ignition switch to ACC or ON position. Wait at least 20 seconds. Clear codes. See CLEARING CODES  under SELF-DIAGNOSTIC SYSTEM. Turn ignition switch to LOCK position. Wait at least 20 seconds. Turn ignition switch to ACC or ON position. Wait at least 20 seconds.
  7. Connect a jumper wire between terminals Tc and E1 of DLC. See Figure. If Code 14 is displayed, replace center air bag sensor. If Code 14 is not displayed, 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. Wait at least 2 seconds.
  8. Turn ignition switch to ACC or ON position. Wait at least 20 seconds. Clear codes. See CLEARING CODES  under SELF-DIAGNOSTIC SYSTEM. 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 a jumper wire between terminals Tc and E1 of DLC. See Figure.
  9. If Code 14 is displayed, replace steering wheel pad. If Code 14 is not displayed, system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT  under DIAGNOSIS & TESTING.
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