Heated Glass Element Switch: Testing and Inspection

INSPECT DEFOGGER SWITCH (in INTEGRATION CONTROL PANEL SWITCH) CIRCUIT
Disconnect the connector from the panel and inspect the connector on wire harness side, as shown in the chart.
If the result is as specified, replace the panel.




INSPECT DEF. MODE SWITCH
a. Check the continuity exists between terminals 1 and 3 of the blower switch connector when turning the mode selector to the DEF. position and F/DEF. position.
If no continuity exists, proceed to the next step.




b. Check the continuity exists between the terminals of the A/C mode switch.
If no continuity exists, replace the A/C mode switch.
If continuity exists, check or replace the heater control housing base.