Tundra Access Cab SR5 2WD V8-4.7L (2UZ-FE) (2001)
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1. INSPECT ILLUMINATION OPERATION
Connect the positive (+) lead from the battery to terminal B7 and negative (-) lead to terminal AB then check that the illuminations lights up.
If operation is not as specified, check the faulty bulb.
2. INSPECT BULB
Apply the tester as shown in the illustration to the test for continuity.
If continuity exists, replace the heater control.
If no continuity exists, replace the bulb.