Gear Sensor/Switch: Description and Operation

Low Range Switch And Circuit:

PURPOSE
Modifies shift schedule for 4x4L transfer case gear ratio.

LOCATION
On the transfer case assembly.

OPERATION
The low range switch provides an indication of when the 4x4 transfer case gear system is in low range.

SYMPTOMS
Failed on - Early shift schedule in 4x2 and 4x4H.
Failed off - Shifts delayed in 4x4L.

NOTE: If the 4x4 low indicator light fuse is blown, the transmission will shift according to 4x4 low shift schedule regardless of transfer case position.

DIAGNOSTIC TROUBLE CODES
47 (two digit), 633 (three digit).