Sensors

Electronic Shift Transfer Case Schematic:

1. Check the THREE sensors with the ignition ON.
a. The Transmission Sensors (manual or automatic) should be CLOSED with the clutch IN, or the automatic shift in NEUTRAL.
b. The Speed Sensor should show 225-275 ohms with the vehicle STOPPED. Check at the Module connection.

Shift Motor Positions:

2. Check both the Motor Position Sensors and the wiring harness at B4, B5, B6, and B7 and the INPUT from B8. Make sure the harness is OK, then check the contacts against the chart.
a. Each valid combination of OPEN and CLOSED switches indicates a different position of the Motor. For example:
^ At the 4H position, B7 is CLOSED, B6 is CLOSED, B5 is OPEN and B4 is OPEN.
b. Besides the THREE main positions (2H, 4H and 4L), INTERMEDIATE positions are also shown:
^ THREE between 2H and 4H and THREE between 4H and 4L.
c. Combinations other than those shown in the chart indicate a defective Motor Sensor Assembly.