Repair and Diagnosis: Service Precautions
PRECAUTIONS BEFORE SERVICESUPPLEMENTAL RESTRAINT SYSTEM (SRS)
1. Items to follow when servicing SRS
1. Be sure to read Supplemental Restraint System (SRS). For safe operation, please follow the directions and heed all warnings.
2. 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.
3. Warning labels must be heeded when servicing or handling SRS components. Warning labels can be found in the following locations.
- Hood
- Sun visor
- Glove box
- SRS-ECU
- Steering wheel
- Air bag module
- Clock spring
- Steering gear box
4. Always use the designated special tools and test equipment.
5. 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.
6. Never attempt to disassemble or repair the SRS components (SRS-ECU, air bag module and clock spring). If there is a defect, replace the defective part.
7. Whenever you finish servicing the SRS, check the SRS warning light operation to make sure that the system functions properly.
8. 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.)
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 temperatures of 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 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 working on the electrical system.
Never perform unauthorized modifications to any electrical device or wiring. Such modifications might lead to a vehicle malfunction, over-capacity or short-circuit that could result in a fire in the vehicle.
CAUTION:
- Before connecting or disconnecting the negative battery cable, be sure to turn off the ignition switch and the lights. (If this is not done, there is the possibility of semiconductor parts being damaged.)
- After completion of the work steps (when the negative battery terminal is connected), warm up the engine and allow it to idle for approximately 10 minutes under the conditions described below in order to stabilize engine control conditions, and then check to be sure that the idling is satisfactory.
2. When servicing the electrical system, disconnect the negative cable terminal from the battery.
Engine coolant temperature: 85 ° - 95 °C (185 ° - 203 °F)
Lights and all accessories: OFF
Transmission: N or P position
Steering wheel: straight-forward 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 approximately 40 cm (16 inches) from any plastic parts and all opening parts (doors, luggage compartment, etc.).
APPLYING ANTI-CORROSION AGENT OR OTHER UNDERCOAT AGENTS
Be careful not to adhere oil or grease to the heated oxygen sensor. If adhered, the sensor may malfunction. Protect the heated oxygen sensor with a cover before applying anti - corrosion agent, etc.
SCAN TOOL (MUT-II)
CAUTION: Turn the ignition switch to "LOCK" (OFF) position before disconnecting or connecting the scan tool.
To operate the scan tool, refer to "MUT-II Operating Instructions."