Repair and Diagnosis: Service Precautions
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)1. Items to follow when servicing SRS
1. Be sure to read Supplemental Restraint System (SRS).
For safe operations, please follow the directions and observe all warnings.
2. Always use the designated special tools and test equipment.
3. Wait at least 60 seconds after disconnecting the battery cable before doing any further work. The SRS system is designed to retain enough voltage to deploy the air bag even after the battery has been disconnected. Serious injury may result from unintended air bag deployment if work is done on the SRS system immediately after the battery cable is disconnected.
4. Never attempt to disassemble or repair the SRS components (SRS-ECU air bag module and clock spring). If faulty, replace it.
5. Warning labels must be observe when servicing or handling SRS components. Warning labels are located in the following locations.
- Sun visor
- Glove box
- SRS-ECU
- Steering wheel
- Air bag module
- Clock spring
- Steering gear box
6. Store components removed from the SRS in a clean and dry place.
The air bag module should be stored on a flat surface and placed so that the pad surface is facing upward.
Do not place anything on top of it.
7. Be sure to deploy the air bag before disposing of the air bag module or disposing of a vehicle equipped with an air bag. (Refer to Air Bag Module Disposal Procedures.)
8. Whenever you finish servicing the SRS, check the SRS warning light operation to make sure that the system functions properly.
2. Observe the following when carrying out operations on places where SRS components are installed, including operations not directly related to the SRS air bag.
1. When removing or installing parts do not allow any impact or shock to the SRS components.
2. SRS components should not be subjected to heat over 93 °C (200 °F), so remove the SRS components before drying or baking the vehicle after painting.
After re-installing them, check the SRS warning light operation to make sure that the system functions properly.
SERVICING THE ELECTRICAL SYSTEM
WARNING: Battery posts, terminals and related accessories contain lead and lead compounds. WASH HANDS AFTER HANDLING.
1. Note the following before proceeding with work on the electrical system.
Note that the following must never be done:
Unauthorized modifications of any electrical device or wiring, because such modifications might lead to a vehicle malfunction, over-capacity or short-circuit that could result in a fire in the vehicle.
2. When servicing the electrical system, disconnect the negative cable terminal from the battery.
CAUTION:
1. Before connecting or disconnecting the negative cable, be sure to turn off the ignition switch and the lighting switch.
(If this is not done, there is the possibility of semiconductor parts being damaged.)
2. After completion of the work steps [when the battery's negative (-) terminal is connected], warm up the engine and allow it to idle for approximately ten minutes under the conditions described below, in order to stabilize the engine control conditions, and then check to be sure that idling is satisfactory.
Engine coolant temperature: 80 - 95 °C (176 - 203 °F)
Lights, electric fans, accessories: OFF
Transaxle: Neutral position (A/T models: "N" or "P")
Steering wheel: neutral (center) position
VEHICLE WASHING
If high-pressure car-washing equipment or steam car-washing equipment is used to wash the vehicle, be sure to maintain the spray nozzle at a distance of at least Approx. 400 mm (16 in.) from any plastic parts and all opening parts (doors, luggage compartment, etc.).
APPLYING RUST PREVENTIVES, UNDERCOAT, ETC.
Heated oxygen sensors have their functional efficiency decreased if they are smeared with oil or grease. When applying rust preventives, undercoat, etc. ,be sure to protect the heated oxygen sensor with a protective cover or the like.
SCAN TOOL
To operate the scan tool, refer to the "MUT-II OPERATING INSTRUCTIONS".
CAUTION: Turn off the ignition switch before disconnecting or connecting the scan tool.