Driver's Seat Back Adjustment Inoperative

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

• Perform TEST 8: DRIVER'S SEAT BACK MOTOR VOLTAGE SUPPLY  under SYSTEM TESTS (POWER SEATS).
• Perform TEST 9: DRIVER'S SEAT BACK MOTOR RESISTANCE  under SYSTEM TESTS (POWER SEATS).