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This code is set when the air thermo sensor circuit is open (Code No.B1022) or is short
(Code No.B1021).
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- Malfunction of the air thermo sensor
- Damaged the wiring harness or connectors
- Malfunction of the automatic A/C control panel (A/C-ECU)
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Q.
Is the check result normal?
Go to Step 2.
Repair the connector.
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note |
Prior to the wiring harness inspection, check joint connector C-138, and repair if necessary.
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- Check the sensor signal line and earth line for open or short circuit.
Q.
Is the check result normal?
Go to Step 3.
Repair the wiring harness.
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Check that the A/C works normally.
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Q.
Is the check result normal?
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This diagnosis is complete.
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Q.
Is the diagnosis code set?
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Replace the automatic A/C control panel (A/C-ECU).
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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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