Step 14 - Inspect Lumbar Support Motor Circuit Breaker Operation

WARNING: This page is about a different car, the 2002 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1 on the lumbar support motor connector and move the lumbar support to front end position.

Fig 1: Testing Lumbar Support Motor Circuit Breaker (1 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Continue to apply voltage, check that a circuit breaker operation noise can be heard within 4 to 60 seconds.
Reverse the polarity, check that the lumbar support begins to move release side with in approximately 60 seconds.

Fig 2: Testing Lumbar Support Motor Circuit Breaker (2 Of 2)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If operation is not as specified, replace the lumber support adjuster.