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When the temperature adjustment of rear
A/C cannot be performed, the circuit between the rear A/C
switch and A/C-ECU may have a failure.
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- Malfunction of the A/C-ECU
- Malfunction of the rear A/C switch
- Damaged the wiring harness or connectors
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Check that the diagnosis code related to the
A/C is not set.
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Q.
Is the check result normal?
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Carry
out the diagnosis code procedures. Refer to .
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Q.
Is the check result normal?
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Q.
Is the rear A/C switch in good condition?
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Replace the rear A/C
switch.
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Q.
Is the check result normal?
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- Check the A/C-ECU input line for open or short circuit.
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Q.
Is the check result normal?
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Repair
the wiring harness.
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