For 1990-2009 cars

### Removal Procedure

Warning: Refer to Battery Disconnect Warning in the Preface section.

Note: Left-Hand Drive Shown, Right-Hand Drive Similar.

1. Disconnect the negative battery cable.
2. Remove the audio trim panel. Refer to Radio Replacement.
3. Remove the control assembly retaining screws.
4. Pull out the unit to gain access to the rear.
5. Disconnect the electrical connectors.
6. Remove the air inlet tube.
7. Remove the automatic temperature control assembly.

### Installation Procedure

1. Connect the air inlet tube.
2. Connect the electrical connectors.

Caution: Refer to Fastener Caution in the Preface section.

3. Position the automatic temperature control assembly and install the retaining screws.

Tighten
Tighten the control assembly retaining screws to 2.5 N·m (22 lb in).

4. Install the audio trim panel. Refer to Radio Replacement.
5. Connect the negative battery cable.