DTC Troubleshooting
DTC TROUBLESHOOTING PROCEDURES
| Step |
Action |
YES |
NO |
| 1 |
Was "Engine and Emission Control System Check" performed? |
Go to Step 2. |
Go to ENGINE AND EMISSION CONTROL SYSTEM CHECK . |
| 2 |
Wire harness check
- Turn ignition switch to OFF position.
- Check for proper terminal connection to A/C condenser cooling fan relay and ECM connectors.
- If connections are OK, recheck DTC.
Is DTC P0482 detected again?
|
Go to Step 3. |
Intermittent trouble. |
| 3 |
Circuit fuse check
- Check "A/C" fuse (1) in fuse box No. 2 with ignition switch turned OFF.
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Is "A/C" fuse in good condition?
|
Go to Step 4. |
Check for short in circuits connected to this fuse. |
| 4 |
A/C condenser fan control circuit voltage check
- Turn ignition switch to OFF position.
- Disconnect connectors from ECM.
- Turn ignition switch ON position.
- Check that A/C condenser cooling fan relay control circuit voltage is battery voltage between ECM connector and vehicle body ground.
Is it in good condition?
|
Substitute a known-good ECM and recheck. |
Go to Step 5. |
| 5 |
A/C condenser fan control circuit voltage check
- Turn ignition switch to OFF position.
- Remove A/C condenser cooling fan relay.
- Turn ignition switch ON position.
- Check that A/C condenser cooling fan relay power supply voltage is battery voltage between A/C condenser cooling fan relay connector and vehicle body ground.
Is it in good condition?
|
Go to Step 6. |
Repair or replace power supply circuit of A/C condenser cooling fan relay. |
| 6 |
A/C condenser fan relay check
- Check A/C condenser cooling fan relay for operation referring to RADIATOR COOLING FAN RELAY INSPECTION
.
Is it in good condition?
|
Repair or replace control circuit of A/C condenser cooling fan relay. If circuit is OK, substitute a known-good ECM and recheck. |
Replace A/C condenser cooling fan relay. |