| 1 |
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
- Has FREEZE FRAME DATA been recorded?
|
Yes |
Go to the next step. |
| No |
Record FREEZE FRAME DATA on repair order, then go to the next step. |
| 2 |
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
- Check for related Service Bulletins and/or online repair information availability.
- Is any related repair information available?
|
Yes |
Perform repair or diagnosis according to the available repair information.
- If the vehicle is not repaired, go to the next step.
|
| No |
Go to the next step. |
| 3 |
INSPECT COOLING FAN RELAY NO. 2 AND NO. 3 CONNECTOR FOR POOR CONNECTION
- Turn the ignition switch off.
- Disconnect cooling fan relay No. 2 and 3 connector.
- Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
- Is there any malfunction?
|
Yes |
Repair or replace terminal and/or connector, then go to Step 10. |
| No |
Go to the next step. |
| 4 |
INSPECT COOLING FAN RELAY NO. 2 AND NO. 3 POWER CIRCUIT FOR OPEN CIRCUIT
- Turn ignition switch to ON (Engine off).
- Measure voltage between following terminals and body ground.
- Cooling fan relay No. 2 terminal A (harness side)
- Cooling fan relay No. 3 terminal E (harness side)
- Is voltage B+
?
|
Yes |
Go to the next step. |
| No |
Replace or replace harness for open circuit, then go to Step 10. |
| 5 |
INSPECT COOLING FAN RELAY NO. 2 AND NO. 3
- Inspect cooling fan relay No. 2 and No. 3. (See
RELAY INSPECTION
.)
- Are cooling fan relay No. 2 and No. 3 normal?
|
Yes |
Go to the next step. |
| No |
Replace cooling fan relay No. 2 or No. 3, then go to Step 10. |
| 6 |
INSPECT COOLING FAN RELAY NO. 2 AND NO. 3 CONTROL CIRCUIT FOR SHORT TO POWER SUPPLY
- Measure voltage between following terminals and body ground.
- Cooling fan relay No. 2 terminal E (harness side)
- Cooling fan relay No. 3 terminal A (harness side)
- Is voltage B+
?
|
Yes |
Repair or replace harness for short to power supply, then go to Step 10. |
| No |
Go to the next step. |
| 7 |
INSPECT COOLING FAN RELAY NO. 2 AND NO. 3 CONTROL CIRCUIT FOR SHORT TO GROUND
- Inspect continuity between following terminals and body ground.
- Cooling fan relay No. 2 terminal E (harness side)
- Cooling fan relay No. 3 terminal A (harness side)
- Is there continuity?
|
Yes |
Repair or replace harness for open circuit, then go to Step 10. |
| No |
Go to the next step. |
| 8 |
INSPECT PCM CONNECTOR FOR POOR CONNECTION
- Turn the ignition switch off.
- Disconnect PCM connector.
- Inspect for poor connection (such as damaged, pulled-out pins, corrosion, etc.).
- Is there any malfunction?
|
Yes |
Repair or replace terminal and/or connector, then go to Step 10. |
| No |
Go to the next step. |
| 9 |
INSPECT COOLING FAN RELAY NO. 2 AND NO. 3 CONTROL CIRCUIT FOR OPEN CIRCUIT
- Inspect continuity between following terminals and PCM terminal 93, 4F (harness side).
- Cooling fan relay No. 2 terminal E (harness side)
- Cooling fan relay No. 3 terminal A (harness side)
- Is there continuity?
|
Yes |
Go to the next step. |
| No |
Repair or replace harness for open circuit, then go to the next step. |
| 10 |
VERIFY TROUBLESHOOTING OF DTC P0481 COMPLETED
- Make sure to reconnect all disconnected connectors.
- Clear the DTC from the PCM memory using the WDS or equivalent.
- Turn the ignition switch off.
- Start engine and turn on A/C switch and fan switch.
- Retrieve any DTC.
- Is PENDING CODE for this DTC present?
|
Yes |
Replace PCM, then go to the next step. (See
PCM REMOVAL/INSTALLATION
.) |
| No |
Go to the next step. |
| 11 |
VERIFY AFTER REPAIR PROCEDURE
|
Yes |
Go to the applicable DTC inspection. (See
DTC TABLE .) |
| No |
Troubleshooting completed. |