DTC P0482
Precautions: General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detection condition | Trouble area |
|---|---|
|
P0482: Fan 3 Control Circuit Any of the following conditions is met.
•Radiator cooling fan relay No.3 drive circuit is open. (1 D/C detection logic)•Radiator cooling fan relay No.3 drive circuit is shorted to power supply. •Radiator cooling fan relay No.3 drive circuit is shorted to ground. •Temperature of radiator cooling fan relay No.3 drive circuit is out of specified range. |
•Radiator cooling fan motor relay No.3 (coil side) and/or its circuit
•ECM |
Circuit Diagram
| [A]: | ECM connector (View: [a]) | C2: | Radiator cooling fan relay No.3 power supply circuit (switch side) | 3. | Radiator cooling sub fan motor |
| A1: | Radiator cooling fan relay No.1 power supply circuit (coil side) | C3: | Radiator cooling fan relay No.3 drive circuit | 4. | Radiator cooling fan relay No.1 |
| A2: | Radiator cooling fan relay No.1 power supply circuit (switch side) | D1: | Radiator cooling fan power supply circuit | 5. | Radiator cooling fan relay No.2 |
| A3: | Radiator cooling fan relay No.1 drive circuit | D2: | Radiator cooling fan ground circuit | 6. | Radiator cooling fan relay No.3 |
| B1: | Radiator cooling fan relay No.2 power supply circuit (coil side) | D3: | Radiator cooling sub fan power supply circuit | 7. | “RDTR” fuse |
| B2: | Radiator cooling fan relay No.2 drive circuit | D4: | Radiator cooling sub fan ground circuit | 8. | “RDTR2” fuse |
| B3: | Radiator cooling fan relay No.2 ground circuit | 1. | ECM | ||
| C1: | Radiator cooling fan relay No.3 power supply circuit (coil side) | 2. | Radiator cooling fan motor |
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
| 2 |
Radiator cooling fan relay No.3 power supply circuit (coil side) and radiator cooling fan relay No.3 drive circuit check
1)Check “C1” and “C3” circuits according to Step 9 – 11 of Radiator Cooling Fan Operation Check:D16AA.
Is check result OK?
|
Go to Step 3.
|
Repair or replace defective wire harness.
|
| 3 |
Radiator cooling fan relay No.3 check
1)Check radiator cooling fan relay No.3.
Is check result OK?
|
Replace ECM and recheck DTC.
|
Replace radiator cooling fan relays No.2 and/or No.3.
|