Tracker 4WD V6-2.5L VIN 4 (2001)
Heated Glass Element: Component Tests and General Diagnostics
TOOLS REQUIRED
J 39200 Digital Multimeter
In order to locate inoperative grid lines, start the engine and turn on the rear window defogger system. Ground the negative lead of the J 39200. Lightly
touch the positive lead to each grid line. Voltage will decrease as the lead is moved further away from the teed bus bar. If the J 39200 shows a high
voltage at both ends of the grid lines, inspect for a loose ground terminal-to-bus bar connection or a loose ground wire-to-body connection.
Test all grid lines in at least two places in order to eliminate the possibility of bridging a break. For best results, contact each grid line a few millimeters
on either side of the window centerline. If an abnormal meter reading is apparent on a specific grid line, place the lead on that grid line and move the
lead until the voltage drops significantly. A drop in voltage indicates a break in the continuity of the grid line. Use a wax pencil or a crayon in order to
mark the grid line breaks on the outside of the window.
