Cooling Fan Control System Inspection
Cooling fan system operation (at idle)
Engine condition
Cooling
fan relay
No.1
Cooling
fan relay
No.2
Cooling
fan relay
No.3
Cooling
fan No.1
Cooling
fan No.2
Engine coolant temperature 97°C {208°F} or
less
OFF OFF OFF OFF OFF
Engine coolant temperature 97°C {208°F} or
more (until 94°C {201°F} or less)
ON OFF OFF
Low
speed
Low
speed
Engine coolant temperature 101°C {213°F} or
more (until 98°C {209°F})
ON ON ON
High
speed
High
speed
The refrigerant pressure switch
(medium pressure) is off.
ON OFF OFF
Low
speed
Low
speed
A/C and fan
switches are
on.
Engine coolant temperature
101°C {213°F} or more or the
refrigerant pressure switch
(medium pressure) is on.
ON ON ON
High
speed
High
speed
ECT sensor malfunction ON ON ON
High
speed
High
speed
1. Connect the WDS or equivalent to the DLC-2.
2. Verify that DTC P0480 or P0481 is not displayed.
• If DTC P0480 and/or P0481 are displayed, perform DTC inspection.
3. Access the ECT PID.
4. Verify that the ECT PID is 97°
°°
°C {208°
°°
°F} or less .
5. Verify that the A/C switch and fan switch are off.
6. Start the engine and let it idle.
(w) RX8-Engine Troubleshooting
Page 152
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