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- Check A/C compressor relay itself (Refer to GROUP 55A - On-vehicle Service - Relay Check
).
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Q.
Is the check result normal?
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Replace the A/C compressor relay.
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- Disconnect relay, and measure at relay box side.
- Voltage between terminal battery line and earth.
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Q.
Is the check result normal?
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![](../../../buttons/03btn002.png)
Repair or replace the connector(s), or check and repair the harness of short circuit to earth, and open circuit in power supply line between battery and A/C compressor relay connector.
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- Disconnect connector and measure at harness side.
- Ignition switch: ON
- Voltage between terminal IG2 line and earth.
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Q.
Is the check result normal?
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YES <Vehicles without KOS> : Go to Step 4.
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YES <Vehicles with KOS> : Go to Step 5.
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NO <Vehicles without KOS> : Repair or replace the connector(s), or check and repair the harness of short circuit to earth, and open circuit in IG2 line between ignition switch and A/C compressor relay connector.
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NO <Vehicles with KOS> : Repair or replace the connector(s), or check and repair the harness of short circuit to earth, and open circuit in IG2 line between IG2 relay and A/C compressor relay connector.
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Q.
Is the check result normal?
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Repair the connector(s) or wiring harness.
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|
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Q.
Is the check result normal?
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Repair the connector(s) or wiring harness.
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- Disconnect connector, and measure at harness side.
- Voltage between terminal AC/R and earth.
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Q.
Is the check result normal?
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|
![](../../../buttons/03btn002.png)
Repair or replace the connector(s), or check and repair the harness of short circuit to earth, and open circuit in AC/R line between A/C compressor relay connector and engine-ECU connector.
|
|
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|
Q.
Is the check result normal?
|
|
Repair the connector(s) or wiring harness.
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Q.
Is the check result normal?
|
|
Repair the connector(s) or wiring harness.
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- Disconnect engine-ECU connector, and short-circuit harness side terminal AC/R to the earth.
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OK: A/C compressor clutch operates.
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Q.
Is the check result normal?
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Replace the A/C compressor assembly.
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