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If the temperature of rear air conditioner con
not be controlled, the rear heater controller circuit system or the rear
air mix damper control motor circuit system may be defective.
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- Malfunction of rear air mix damper control motor
- Malfunction of rear heater controller
- Malfunction of the A/C-ECU
- Damaged harness wires and connectors
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Check whether the air conditioner sets a
diagnosis code or not.
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Q.
Is the check result normal?
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Refer
to diagnosis code chart .
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Carry out the actuator test. (Refer to .)
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- Item 13: R.Air mix dumper motor: 0%
- Item 14: R.Air mix dumper motor: 50%
- Item 15: R.Air mix dumper motor: 100%
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Q.
Does the rear blower motor work normally?
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Check that the following service data display
contents are normal. (Refer to .)
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- Item 12: R.Air mix potentiometer
- Item 13: R.Air mix potentiometer (Target)
- Item 51: Rear Temperature setting
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Q.
Is the check result normal?
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![](../../../img/55/AC313432AB00ENG.png)
![](../../../img/55/AC313434AC00ENG.png)
![](../../../img/55/AC313436AB00ENG.png)
![](../../../img/55/AC313438AD00ENG.png)
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Q.
Is the check result normal?
Go to Step 5.
Repair the connector.
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Q.
Is the check result normal?
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Replace the rear heater
controller.
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![](../../../img/55/AC313392AB00ENG.png)
![](../../../img/55/AC313406AB00ENG.png)
![](../../../img/55/AC313416AB00ENG.png)
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Q.
Is the check result normal?
Go to Step 7.
Repair the connector.
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![](../../../img/55/AC313393AP00ENG.png)
![](../../../img/55/AC313407AM00ENG.png)
![](../../../img/55/AC313417AN00ENG.png)
![](../../../img/55/AC313432AB00ENG.png)
![](../../../img/55/AC313434AC00ENG.png)
![](../../../img/55/AC313436AB00ENG.png)
![](../../../img/55/AC313438AD00ENG.png)
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note |
Prior to the wiring harness inspection, check
intermediate connector C-128, and repair if necessary.
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- Check the input line for open circuit.
Q.
Is the check result normal?
Go to Step 8.
Repair the wiring
harness.
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Q.
Is the check result normal?
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The
trouble can be an intermittent malfunction (Refer to GROUP 00, How to Cope
with Intermittent Malfunction ).
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