Without A45

Battery positive voltage (B+) is applied at all times to the LH and RH lumbar switches from the trunk compartment fuse block BATT fuse. Battery positive voltage (B+) is applied at all times to the LH and RH lumbar up/down and in/out relay from the LH MaxiFuse(R) block SEATS circuit breaker.

Lumbar Up/Down Operation
When the lumbar switch is moved to the UP position, battery positive voltage (B+) is applied to the up coil in the lumbar up/down relay, the coil energizes and the up contact closes. Battery positive voltage (B+) from CKT 742 (RED) is then applied through the relay to CKT 768 (TAN or TAN/WHT) (LH) or CKT 793 (PNK or TAN/WHT) (RH) to the lumbar up/down motor. Ground for the motor is obtained through CKT 767 (PPL or PPL/WHT) (LH) or CKT 792 (ORN or PPL/WHT) (RH), the lumbar up/down relay, and CKT 850 (BLK) to ground G302. This allows the lumbar up/down motor to run, moving the lumbar support up the seat back.

When the lumbar switch is moved to the DOWN position, the circuit operates similarly to the up mode, except that he lumbar up/down motor has the polarity reversed, causing the motor to run in the opposite direction and moving the lumbar support down in the seat back.

Lumbar In/Out Operation
In/out operation is similar to the up/down operation, except the in/out motor moves the lumbar support in or out within the seat back. When the lumbar switch is moved to the OUT position, battery positive voltage (B+) is applied to the out coil in the lumbar in/out relay, the coil energizes and the out contact closes. Battery positive voltage (B+) from CKT 742 (RED) is then applied through the relay to CKT 611 (DK BLU or DK BLU/WHT) (LH) or CKT 211 (DK BLU or DK BLU/WHT) (RH) to the lumbar in/out motor. Ground for the motor is obtained through CKT 610 (PNK or PNK/BLK) (LH) or CKT 210 (WHT or PNK/BLK) (RH), the lumbar in/out relay, and CKT 850 (BLK) to ground G302. This allows the lumbar in/out motor to run, moving the lumbar support out toward the driver's back

When the lumbar switch is moved to the IN position, the circuit operates similarly to the out mode, except that the lumbar in/out motor has the polarity reversed, causing the motor to run in the opposite direction and moving the lumbar support in away from the driver's back.