| 1 |
Was "4WD control system check" performed? |
Go to Step 2. |
Go to 4WD CONTROL SYSTEM CHECK . |
| 2 |
Coupling air temperature sensor circuit check
- Disconnect connector from coupling air temperature sensor with ignition switch turned OFF.
- Check for proper connection to "BRN" and "ORN" terminals of coupling air temperature sensor connector.
- If connection is OK, measure voltage between "BRN" terminal of coupling air temperature sensor connector and vehicle body ground with ignition switch turned ON.
Is it 4 - 6 V? |
Go to Step 3. |
Go to Step 5. |
| 3 |
Coupling assembly ground circuit check
- Disconnect connector from 4WD control module with ignition switch turned OFF.
- Measure resistance between "ORN" terminal of coupling air temperature sensor connector and "G26-24" terminal of 4WD control module connector with ignition switch turned OFF.
Is resistance below 5 Ω? |
Go to Step 4. |
"ORN" wire is open or high resistance. |
| 4 |
Coupling air temperature sensor check
- Check coupling air temperature sensor by referring to COUPLING AIR TEMPERATURE SENSOR INSPECTION .
Is it in good condition? |
Substitute a known-good 4WD control module and recheck. |
Replace coupling air temperature sensor. |
| 5 |
Coupling assembly circuit check
- Disconnect connector from 4WD control module with ignition switch turned OFF.
- Check for proper connection to "G26-25" and "G26-24" terminals of 4WD control module connector.
- If connection is OK, measure resistance between "G26-25" terminal of 4WD control module connector and vehicle body ground.
Is resistance below 5 Ω? |
"BRN" wire is open or high resistance circuit. |
Substitute a known-good 4WD control module and recheck. |