Is there continuity?
YES -
Go to step 13.
NO -
Repair an open in the wire(s) between the climate control unit and the rear climate control panel.?
13. Check for continuity between body ground and climate control unit connector B (14P) terminals No. 11 and No. 12 individually.
Is there continuity?
YES -
Repair a short to body ground in the wire(s) between the climate control unit and the rear climate control panel.?
NO -
Go to step 14.
14. Check for continuity between climate control unit connector B (14P) terminals No. 11 and No. 12.
Is there continuity?
YES -
Repair a short in the wires between the climate control unit and the rear climate control panel.?
NO -
Substitute a known-good rear climate control panel, and recheck. If the symptom/indication goes away, replace the original rear climate control