Driver's Seat Headrest Adjustment Inoperative

If driver's seat headrest adjustment is inoperative, check the following as possible cause and repair as necessary:

• Perform TEST 10: DRIVER'S SEAT HEADREST MOTOR VOLTAGE SUPPLY  under SYSTEM TESTS (POWER SEATS).
• Perform TEST 11: DRIVER'S SEAT HEADREST MOTOR RESISTANCE  under SYSTEM TESTS (POWER SEATS).