Here are the schematics. Turn ignition switch on and at the PCM, use the test light to ground terminal # 26, C3 (connector # 3 ) and note if the 4WD Low indicator light comes on.
Likewise repeat above with terminal # 18 of C4, for 4WD light.
Note the wire colors to be sure which terminal is the correct one.
Images (click to enlarge)
Thursday, October 11th, 2012 AT 10:05 PM