|
- A/C compressor relay connector check.
- Check A/C compressor relay (Refer to GROUP 55A - On-vehicle Service - Relay
Check).
|
|
Q.
Is the check result normal?
|
|
Repair or replace the connector, or replace the A/C compressor relay.
|
|
|
|
- Remove relay, and measure at the relay box side.
- Voltage between terminal power supply lines and body earth.
|
|
Q.
Is the check result normal?
|
|
![](../../../buttons/03btn002.png)
Repair or replace the connector, or check
and repair harness between A/C compressor relay connector terminal and battery.
- Check power supply line for open/short circuit.
|
|
|
|
- Disconnect connector, and measure at the harness side.
- Voltage between terminal AC/R and body earth.
|
|
Q.
Is the check result normal?
|
|
![](../../../buttons/03btn002.png)
Repair or replace the connector, or check
and repair harness between engine-ECU connector terminal AC/R and A/C compressor relay connector terminal.
- Check earthing line for open/short circuit.
|
|
|
|
- Disconnect connector, and measure at the harness side.
- Using a jumper wire, connect engine-ECU connector terminal AC/R and body earth.
- Voltage between terminal output line and body earth.
|
|
Q.
Is the check result normal?
|
|
- Check output line for open/short circuit.
|
|
Q.
Is the check result normal?
|
|
Repair or replace the connector, or repair the damaged harness wire.
|
|
|
|
- Check earthing line for damage.
|
|
Q.
Is the check result normal?
|
|
![](../../../buttons/03btn001.png)
Repair or replace the connector, or check
and repair harness between A/C compressor relay connector terminal and battery.
- Check power supply line for damage.
|
|
|
|
Repair or replace the connector, or repair the damaged harness wire.
|
|
|
|
- Check power supply line for damage.
|
|
Q.
Is the check result normal?
|
|
Repair or replace the connector, or repair the damaged harness wire.
|
|
|
|
- Check output line for damage.
|
|
Q.
Is the check result normal?
|
|
Repair or replace the connector, or repair the damaged harness wire.
|
|
|
|
- Disconnect engine-ECU harness, and connect special tool power plant ECU check
harness (MB992291) to measure at connector for inspection.
- Engine: Idle operation after warm-up
|
|
- 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 AC/R and body earth.
|
|
OK:
1.0 V or less (when A/C is ON) System voltage (when A/C is OFF)
|
|
Q.
Is the check result normal?
|
|
- Refer to Actuator Test Reference Table
.
- Item 4: A/C compressor relay
|
|
Q.
Is the check result normal?
|
|
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection
Service Points - How to Cope with Intermittent Malfunctions).
|
|
|
|
Replace the A/C compressor relay.
|
|
|