scion Workshop Repair Guides

Scion Workshop Service and Repair Manuals

Sensors and Switches - Windows and Glass > < Heated Glass Element Relay|Locations
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Heated Glass Element Relay: Testing and Inspection

WINDSHIELD / WINDOWGLASS: DEFOGGER RELAY: ON-VEHICLE INSPECTION

ON-VEHICLE INSPECTION

1. INSPECT MAIN BODY ECU (DEFOGGER RELAY)

(a) Remove the DEF fuse.
(b) Using an ohmmeter, measure the resistance between the terminals of the DEF fuse.

Standard resistance:
Below 1 Ohms

(c) Install the DEF fuse.
(d) Using an ohmmeter, measure the resistance between terminals 4Q-12 and 4Q-4 of the main body ECU connector.

Standard resistance:
Below 1 Ohms

(e) Turn the ignition switch ON.
(f) Turn the defogger switch ON.
(g) Using a voltmeter, measure the voltage between terminal 4F-2 of the main body ECU connector and body ground.

Standard voltage:
11 to 14 V

Sensors and Switches - Windows and Glass > < Heated Glass Element Relay|Locations