Detection Condition
WARNING: This page is about a different car, the 2003 Mazda B4000, 2003 Mazda B3000, and 2003 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.
- DTC P1729 indicates 4WD shift control switch failure, either open or shorted.
- DTC P1781 indicates 4WD position (closed) during KOEO self-test.
4WD low switch provides an indication of when 4WD transfer case gear system is in low range. PCM modifies the shift schedule for 4X4L transfer case gear ratio.