Four-Wheel Drive Systems: Notes
WARNING: This page is about a different variant/trim than selected.
The automatic 4-wheel drive transfer case system consists of the following:
- Automatic 4WD indicator light
- Brake pedal position (BPP) switch
- Integrated wheel ends (IWE) solenoid
- Torque on demand (TOD) relay
- 4WD control module - integral to the powertrain control module (PCM)
- 4WD high indicator light
- 4WD low indicator light
- 4WD mode select switch (MSS)
- Shift position sensor
- Throttle position output (TPO) from the PCM
- Transmission range sensor
- Average front and rear wheel speed signals from the anti-lock brake system