DTC Troubleshooting
DIAGNOSTIC PROCEDURES CHART
| 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 |
Radiator cooling fan relay No. 1 power supply circuit (coil side) check
- Confirm that ignition mode of keyless push start system is "OFF".
- Remove radiator cooling fan relay No. 1.
- Check for proper terminal connection to radiator cooling fan relay No. 1 connector.
- If connections are OK, check that voltage between "A1" circuit is battery voltage with ignition mode of keyless push start system in "ON".
Is it in good condition? |
Go to Step 3. |
Repair or replace defective wire harness. |
| 3 |
Radiator cooling fan relay No. 1 check
- Check radiator cooling fan relay No. 1, see CONTROL RELAY INSPECTION
.
Is it in good condition? |
Go to Step 4. |
Replace radiator cooling fan relay No. 1. |
| 4 |
Radiator cooling fan relay No. 1 drive circuit check
- Push engine switch to change ignition mode to "OFF".
- Disconnect "C01" and "E01" connectors.
- Check for proper terminal connection to "C01" and "E01" connectors.
- If connections are OK, check the following points.
- Resistance of "B1" circuit: less than 1 Ω
- Resistance between "B1" circuit and ground: infinity
- Resistance between "B1" circuit terminal and other terminal at radiator cooling fan relay No. 1 connector: infinity
- Voltage of "B1" circuit: 0 - 1 V (with ignition mode of keyless push start system in "ON")
Are they in good condition? |
Replace ECM and recheck DTC, see ECM REMOVAL AND INSTALLATION
. |
Repair or replace defective wire harness. |