Ascender 2WD L6-4.2L (2003)
4. Move the test lamp probe from zone 5 to zone 1 along each grid line.
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If the test lamp shows full brilliance at both ends of the grid lines. Inspect for an open or poor connection in the ground circuit of the rear
window defogger grid. Refer to Diagnostic Aids for Circuit Testing and Wiring Repair Procedures.
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If the test lamp goes out, test the grid line in at least 2 places (1, 3) to eliminate the possibility of bridging the open (2) in the grid line.
5. Once the open (2) is located, repair the grid line. Refer to Grid Line Repair.
