Four Wheel Drive (4WD) Low Switch Circuit
The 4WD-Low engagement switch circuit is faulty. The transmission and chassis controllers cannot tell whether the transfer case is in low range.
Affected components
- Four wd low switch
- Transfer case
- Wiring harness
Common causes
- High likelihood: Switch contacts worn or corroded
- Medium likelihood: Broken wire to switch
Diagnostic notes
- The malfunction indicator lamp may illuminate
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.