Postby smj999smj » Mon Jan 08, 2018 2:50 pm
There should be codes stored in the 4x4 control unit. A capable scan tool would be needed to access those codes or there is a manual method to get them in the factory service manual:
1. Warm up engine.
2. Move A/T selector lever to “P†position.
3. Turn 4WD shift switch to “2WD†position.
4. Turn ignition switch “ON†and “OFF†at least twice, and then turn ignition switch “OFFâ€.
5. Turn 4WD shift switch to “AUTO†position.
6. Turn ignition switch “ONâ€. (Do not start engine.)
7. 4WD warning lamp ON.
If 4WD warning lamp does not turn ON, refer to TF-122, "4WD Warning Lamp Does Not Turn ON" .
8. Move A/T selector lever to “R†position.
9. Turn 4WD shift switch to “2WDâ€, “AUTO†and “2WD†in order.
10. Move A/T selector lever to “D†position.
11. Turn 4WD shift switch to “LOCKâ€, “AUTO†and “LOCK†in order.
12. Move A/T selector lever to “N†position.
13. Turn 4WD shift switch to “AUTO†position.
14. Move A/T selector lever to “P†position.
15. Read the flickering of 4WD warning lamp.
If we know what the codes are, it would help give an idea of what's going on.