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- Measure engine-ECU <M/T> or engine-A/T-ECU <A/T>
terminal voltage.
- Engine: Idling
- A/C switch: ON (A/C compressor in driven state)
- Voltage between terminal No. 78 and earth.
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OK:
1 V or less (when
the temperate around the atmospheric air temperature sensor is
18°C or more, and the A/C is set to the lowest temperature and the
maximum air flow
rate) System voltage (when the A/C is set to the temperature in the
cabin and the minimum
air flow rate)
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Q.
Is the check result normal?
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Q.
Is the check result normal?
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Repair
or replace the connector.
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Q.
Does trouble symptom persist?
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Replace the engine-ECU <M/T>
or engine-A/T-ECU <A/T>.
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Intermittent malfunction (Refer to
GROUP 00 - How to Use Troubleshooting/Inspection
Service Points - How to Cope with Intermittent Malfunctions ).
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Q.
Is the check result normal?
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Repair
or replace the connector.
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- Measure A/C-ECU terminal voltage.
- Engine: Idling
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- A/C set temperature:
Maximum Cool when
temperature in cabin is 25°C
or more Maximum Hot when temperature in cabin is 25°C or
less
- Voltage between terminal No. 12 and earth.
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Q.
Is the check result normal?
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Q.
Is the check result normal?
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Repair
or replace the connector.
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- Check output line for short circuit.
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Q.
Is the check result normal?
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Check
A/C system (Refer to GROUP 55 - Troubleshooting - Check
Chart for Trouble Symptoms ).
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Repair
the damaged harness wire.
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Q.
Is the check result normal?
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![](../../../buttons/03btn001.png)
Check intermediate
connector D-230, and repair
if necessary. If intermediate connector is normal, check and repair
harness between D-08 (terminal No.
12) A/C-ECU connector and D-245 (terminal No. 78) engine-ECU
<M/T> connector or D-216 (terminal
No. 78) engine-A/T-ECU <A/T> connector.
- Check output line for open circuit.
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Repair
or replace the connector.
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