Air Bag Warning Light Does Not Come On At All
WARNING: This page is about a different car, the 1995 Toyota Tercel. However, it is still accessible from the selected car via links, so may be relevant.
- Check ECU-B fuse (SRS fuse). If fuse is faulty, replace fuse and go to step 5). If fuse is okay, 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 panel in glove box. See Figure.
- Disconnect center air bag sensor connector. Reconnect negative battery cable. Turn ignition switch to ACC or ON position. Measure voltage between body ground and terminal LA of center air bag sensor connector (harness side). See Fig 1.
- If battery voltage is not present, repair air bag warning light circuit. If battery voltage is present, disconnect negative battery cable. Reconnect center air bag sensor connector. Reconnect negative battery cable. Turn ignition switch to ACC or ON position. Turn ignition off. Wait at least 6 seconds. Turn ignition switch to ON position.
- If air bag warning light comes on, go to next step. If air bag warning light does not come on, check for poor connection at terminal LA. If connection is okay, check for faulty electrical connection check mechanism in center air bag sensor connector. See Fig 1. If mechanism is faulty, replace harness. If mechanism is okay, replace center air bag sensor.
- Recheck SRS fuse. If fuse is faulty, repair air bag warning light circuit. If fuse is okay, check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT under DIAGNOSIS.