For 1990-2009 cars

### Removal Procedure

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
2. Remove the cover from the number 1 underhood electrical center.
3. Remove the cooling fan relay from the underhood electrical center.

### Installation Procedure

1. Install the cooling fan relay to the underhood electrical center.
2. Install the cover to the number 1 underhood electrical center.
3. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.