Climate Control Unit Removal And Installation (Climate Control)
Climate Control Unit Removal and Installation
Removal
1. Shift Lever Panel (AT)
1. Carefully pry out the shift lever panel (A) with the appropriate trim tool to detach the clips (B, C) and the hooks (D), then remove the shift lever panel.
2. Driver's Inner Dashboard Trim Panel
1. Carefully pry out the driver's inner dashboard trim panel (A) with the appropriate trim tool to detach the clips (B), then remove the driver's inner dashboard trim panel.
3. Climate Control Unit Assembly
1. Remove the climate control unit assembly (A), then disconnect the connector (B).
4. Climate Control Unit
1. Remove the dials (A).
2. Remove the climate control unit (B).
Installation
1. Climate Control Unit
1. Install the climate control unit (A).
2. Install the dials (B).
2. Climate Control Unit Assembly
1. Connect the connector (A), then install the climate control unit assembly (B).
3. Driver's Inner Dashboard Trim Panel
1. Install the driver's inner dashboard trim panel (A). Make sure the clips (B) snap into place securely.
4. Shift Lever Panel (AT)
1. Install the shift lever panel (A). Make sure the clips (B, C) and the hooks (D) snap into place securely.
5. Climate Control Self-Diagnostic Function
How to Use the Self-Diagnostic Function to check for DTCs
1. Turn the ignition switch to LOCK (0) and then back to ON (II).
2. Press and hold the ON/OFF button, then within 10 seconds press and release the REAR WINDOW DEFOGGER button five times. Release the ON/OFF button.
3. All LCD segments come on for 2 seconds, then the self-diagnostic function begins.
NOTE:
* The self-diagnostic test could take up to about 90 seconds to run.
* The blower motor will run at various speeds regardless of what the panel is displaying.
* If there is any problem in the system, the system flashes 88. Refer to checking for DTCs.
* If there are no problems detected, the segments will not illuminate, and the system will appear to be turned off.
Canceling the Self-Diagnostic Function
4. Turn the ignition switch to LOCK (0) to cancel the self-diagnostic function. After completing the repair work, run the self-diagnostic function again to make sure that there are no other DTCs.
Checking for DTCs
The temperature indicator display indicates single or multiple DTCs. If no DTCs are present, the indicator remains blank.
NOTE: If temperature indicator segments 05, 07, 09, 40, 43, 49, 55, and 89 are on at the some time, there may be an open in the sensor common ground wire.
Displaying Sensor Inputs at the Climate Control Unit
The climate control unit has a mode that displays the sensor inputs it receives. This mode shows you what the climate control unit is receiving from each of the sensors, one at a time, and it can help you determine if a sensor is faulty.
Checks Before Using the Sensor Input Display Mode
1. Turn the ignition switch to ON (II), and check the recirculation door function; press the RECIRCULATION button to switch from FRESH to RECIRC. The air volume and sound should change slightly.
2. Set the temperature control dial to the desired test temperature:
* "Lo" temperature setting will default to MAX COOL, VENT, and RECIRC (A/C on) or FRESH (A/C off).
* "Hi" temperature setting will default to MAX HOT, HEAT or HEAT/DEF, and FRESH.
* 58 through 86 °F (14 through 30 °C) settings will use the automatic climate control logic.
3. Turn the ignition switch to LOCK (0).
Run the Sensor Input Display Mode
1. Turn the ignition switch to LOCK (0).
2. Press and hold both the AUTO and RECIRCULATION CONTROL buttons, then start the engine.
3. After the engine starts, release both buttons. The climate control unit will flash the sensor number and then the value for that sensor. Record the value displayed.
4. To advance to the next sensor, press the REAR WINDOW DEFOGGER button.
NOTE:
* The sensor values will be displayed in degrees Celsius (°C) or an alphanumeric code. Use the chart to convert the value to degrees Fahrenheit (°F).
* If the sensor value displays "Er", this indicates there is an open or short in the circuit or sensor. Check for DTCs using the HDS, or use the climate control self-diagnostic function.
* If necessary, compare the sensor input display to a known-good vehicle under the same test conditions.
* If the sensor is out of the normal range, refer to the sensor test or substitute a known-good sensor, and recheck.
