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If the air conditioner outlet temperature cannot be adjusted, the air mixing damper control
motor or the heater controller assembly (A/C-ECU) may be faulty.
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- Malfunction of the air mix damper control motor
- Damaged wiring harness or connectors
- Malfunction of the heater controller assembly (A/C-ECU)
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Carry out the actuator test (Refer to ).
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Item No.16: Dr air mix damper motor <Single-zone auto A/C, Dual-zone
auto A/C>
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Item No.17: As air mix damper motor <Dual-zone auto A/C>
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Q.
Is the check result normal?
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NO <Item No.16 indicates a malfunction> : Go to Step 4.
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NO <Item No.17 indicates a malfunction> : Go to Step 6.
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Check that the diagnosis code related to the air conditioner is not set.
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Q.
Is the diagnosis code set?
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Carry out the diagnosis code procedures (Refer to ).
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Check that the temperature set switch can operate.
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Q.
Is the check result normal?
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Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent
Malfunction ).
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Refer to inspection procedure 9 "heater control panel assembly (A/C-ECU)
power supply system" .
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Q.
Is the check result normal?
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Repair or replace the connector(s) or wiring harness.
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Check that the air outlets can be changed.
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Q.
Is the check result normal?
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This diagnosis is complete.
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Replace the heater controller assembly (A/C-ECU) (Refer to ).
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Q.
Is the check result normal?
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Repair or replace the connector(s) or wiring harness.
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Check that the air outlets can be changed.
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Q.
Is the check result normal?
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This diagnosis is complete.
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Replace the heater controller assembly (A/C-ECU) (Refer to ).
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