|
- Check cooling fan control relay (Refer to GROUP 14 - On-vehicle Service - Fan Control Relay Continuity Check
).
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|
Q.
Is the check result normal?
|
|
Replace cooling fan control relay.
|
|
|
|
- Check cooling fan motor (Refer to GROUP 14 - On-vehicle Service - Cooling Fan Motor Check
).
|
|
Q.
Is the check result normal?
|
|
- Disconnect connector and measure at harness side.
- Voltage between terminal battery line and earth.
|
|
Q.
Is the check result normal?
|
|
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 cooling fan control relay (low) connector.
|
|
|
|
- Disconnect connector and measure at harness side.
- Ignition switch: ON
- Voltage between terminal IG2 line and earth.
|
|
Q.
Is the check result normal?
|
|
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 cooling fan control relay (low) connector.
|
|
|
|
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 cooling fan control relay (low) connector.
|
|
|
|
- Disconnect connector and measure at harness side.
- Voltage between terminal battery line and earth.
|
|
Q.
Is the check result normal?
|
|
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 cooling fan control relay (high) connector.
|
|
|
|
- Disconnect connector and measure at harness side.
- Ignition switch: ON
- Voltage between terminal IG2 line and earth.
|
|
Q.
Is the check result normal?
|
|
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 cooling fan control relay (high) connector.
|
|
|
|
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 cooling fan control relay (high) connector.
|
|
|
|
Q.
Is the check result normal?
|
|
Repair the connector(s) or wiring harness.
|
|
|
|
Q.
Is the check result normal?
|
|
Go to Step 9 <Vehicles without KOS>.
|
|
|
|
Go to Step 11 <Vehicles with KOS>.
|
|
|
|
Repair the connector(s) or wiring harness.
|
|
|
|
Q.
Is the check result normal?
|
|
Repair the connector(s) or wiring harness.
|
|
|
|
Q.
Is the check result normal?
|
|
Repair the connector(s) or wiring harness.
|
|
|
|
Q.
Is the check result normal?
|
|
Repair the connector(s) or wiring harness.
|
|
|
|
Q.
Is the check result normal?
|
|
Repair the connector(s) or wiring harness.
|
|
|
|
- Disconnect connector and measure at harness side.
- Ignition switch: ON
- Voltage between terminal F/LO line and earth.
|
|
Q.
Is the check result normal?
|
|
![](../../../buttons/03btn002.png)
Repair or replace the connector(s), or check and repair the harness of short circuit to earth, and open circuit in F/LO line between cooling fan control relay (low) connector and engine-ECU connector.
|
|
|
|
- Disconnect connector and measure at harness side.
- Ignition switch: ON
- Voltage between terminal F/HI line and earth.
|
|
Q.
Is the check result normal?
|
|
![](../../../buttons/03btn002.png)
Repair or replace the connector(s), or check and repair the harness of short circuit to earth, and open circuit in F/HI line between cooling fan control relay (high) connector and engine-ECU connector.
|
|
|
|
Q.
Is the check result normal?
|
|
Repair the connector(s) or wiring harness.
|
|
|
|
Q.
Is the check result normal?
|
|
Repair the connector(s) or wiring harness.
|
|
|
|
- Disconnect connector and measure at harness side.
- Resistance between terminal earth line and earth.
|
|
OK: Continuity (2 Ω or less)
|
|
Q.
Is the check result normal?
|
|
![](../../../buttons/03btn002.png)
Check and repair harness between cooling fan motor connector and body earth. Repair or replace the connector, or check and repair the harness of damage in earth line between cooling fan motor connector and body earth.
|
|
|
|
Q.
Is the check result normal?
|
|
Repair the connector(s) or wiring harness.
|
|
|
|
Q.
Is the check result normal?
|
|
Repair the connector(s) or wiring harness.
|
|
|
|
- Refer to Actuator Test Reference Table
.
- Item 12: Cooling fan motor (high)
- Item 13: Cooling fan motor (low)
|
|
Q.
Are the check results normal?
|
|
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
|
|
|