Heating and Air Conditioning: Service Precautions

CAUTION

1. Never connect the battery in reverse polarity.
The Auto A/C control module will be destroyed instantly.

2. Do not disconnect the battery cables while the engine is running.2
A large counter electromotive force will be generated in the alternator, and this voltage may damage electronic parts such as A/C control module.

3. Before disconnecting the connectors of each sensor and the A/C control module, be sure to turn off the ignition switch.
Otherwise, the Auto A/C control module may be damaged.

4. Every Auto A/C-related part is a precision part. Do not drop them.
5. Airbag system wiring harness is routed near the A/C control panel (A/C control module) and junction box.

CAUTION:
- All airbag system wiring harness and connectors are colored yellow. Do not use electrical test equipment on these circuits.
- Be careful not to damage the airbag system wiring harness when servicing the A/C control panel (A/C control module) and junction box.