|
If the blower air volume can not be
changed when the blower switch is operated, the circuit
between front power transistor and A/C-ECU may be
defective.
|
|
- Front power transistor
- Damaged the wiring harness or connectors
- Malfunction of the automatic air conditioner control
panel (A/C-ECU)
|
|
Carry out the actuator test. (Refer
to .)
|
|
- Item 01, 02, 03: Blower motor
|
|
Q.
Does the blower motor work normally?
|
|
Check that the following service
data display contents are normal. (Refer to .)
|
|
- Item 20: Front blower fan
- Item 21: Front blower fan (Target)
|
|
Q.
Does the blower motor work normally?
|
|
Check that the front blower motor
operates normally.
|
|
Q.
Does the blower motor work normally?
|
|
This diagnosis is
complete.
|
|
|
|
Replace the
automatic air conditioner control panel
(A/C-ECU)
|
|
|
![](../../../img/55/AC313396AE00ENG.png)
![](../../../img/55/AC313404AE00ENG.png)
![](../../../img/55/AC313414AF00ENG.png)
|
Q.
Is the check result normal?
Go to Step
5.
Repair
the connector.
|
![](../../../img/55/AC313396AE00ENG.png)
![](../../../img/55/AC313404AE00ENG.png)
![](../../../img/55/AC313414AF00ENG.png)
|
(1)Disconnect the connector, and
measure at the wiring harness side.
|
![](../../../img/55/AC310506AP00ENG.png)
|
(2)Continuity between terminal 2
and body earth OK: 2Ω or
less
Q.
Is the check result normal?
Go to Step
7.
Go to Step
6.
|
![](../../../img/55/AC313396AE00ENG.png)
![](../../../img/55/AC313404AE00ENG.png)
![](../../../img/55/AC313414AF00ENG.png)
|
- Check the blower linear controller earth line for
open circuit.
Q.
Is the check result normal?
The trouble can be
an intermittent malfunction (Refer to GROUP 00, How to Cope
with Intermittent Malfunction ).
Repair the wiring
harness.
|
![](../../../img/55/AC313392AB00ENG.png)
![](../../../img/55/AC313406AB00ENG.png)
![](../../../img/55/AC313416AB00ENG.png)
|
Q.
Is the check result normal?
Go to Step
8.
Repair
the connector.
|
![](../../../img/55/AC313396AE00ENG.png)
![](../../../img/55/AC313404AE00ENG.png)
![](../../../img/55/AC313414AF00ENG.png)
![](../../../img/55/AC313392AB00ENG.png)
![](../../../img/55/AC313406AB00ENG.png)
![](../../../img/55/AC313416AB00ENG.png)
|
- Check the blower linear controller power supply line
for open circuit.
Q.
Is the check result normal?
Go to Step
9.
Repair
the wiring harness.
|
|
Check that the front blower motor
operates normally.
|
|
Q.
Does the blower motor work normally?
|
|
This diagnosis is
complete.
|
|
|
|
Replace the
automatic air conditioner control panel
(A/C-ECU).
|
|
|
|
Check that the front blower motor
operates normally.
|
|
Q.
Is the check result normal?
|
|
This diagnosis is
complete.
|
|
|
|
Replace the
automatic air conditioner control panel
(A/C-ECU).
|
|
|