Air Bag Warning Light Inoperative
WARNING: This page is about a different car, the 1995 Toyota Paseo. However, it is still accessible from the selected car via links, so may be relevant.
- Remove and check ECU "B" fuse. If fuse is okay, go to next step. If fuse is blown, replace fuse. Turn ignition switch to ACC or ON position. If fuse blows again, repair circuit between fuse and air bag warning light. If fuse does not blow again, system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT under DIAGNOSIS & TESTING.
- Check for partially connected center air bag sensor connector. Reconnect as necessary. If connector is fully connected, 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 (if equipped), accessible through finish plate 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. See Figure. 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. Wait at least 2 seconds. Turn ignition switch to ACC or ON position. If air bag warning light does not come on, go to next step. If air bag warning light comes on, system is functioning properly at this time. Check for intermittent fault. See AIR BAG WARNING LIGHT INTERMITTENT under DIAGNOSIS & TESTING.
- Check for poor connection at terminal LA of center air bag sensor connector. If connection is okay, check for problem with electrical connection check mechanism in center air bag sensor connector. See Figure. If mechanism is okay, replace center air bag sensor.