4X4 Mode Switch Test

A variable resistance switch that signals the Generic Electronic Module (GEM) to operate the "Control-Trac", Four-wheel drive system in 2WD, 4WD Auto, and 4WD Low range.

Switch Resistance:

The switch is checked as follows:
Measure resistance between Circuits 359 (GY/R) and 465 (W/LB) using a Digital Multimeter (see diagram and table for terminal location and resistance values).