Lumbar Supports

LUMBAR UP/DOWN OPERATION
When the lumbar switch is moved to the UP position, battery voltage from Trunk Compartment Fuse Block BAIT Fuse is applied to the up coil in the up/down lumbar relay, the coil energizes and the up contact closes. Battery voltage from LH MaxiFuse(R) Block SEATS Circuit Breaker is then applied through relay terminal C (RED) and terminal B (TAN or PNK) to the up/down lumbar motor. Ground for the motor is obtained through CKT 767 (PPL) or CKT 792 (ORN), the up/down relay, and CKT 850 (BLK) to ground G302. This allows the up/down lumbar motor to run, moving the lumbar support up the seat back.

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

LUMBAR IN/OUT OPERATION
In/Out operation is similar to the up/down operation, except the ~out motor moves the lumbar support in or out of the seat back. When the lumbar switch is moved to the OUT position, battery voltage from Trunk Compartment Fuse Block BAIT Fuse is applied to the out coil in the in/out lumbar relay, the coil energizes and the out contact closes. Battery voltage from LH MaxiFuse(R) Block SEATS Circuit Breaker is then applied through relay terminal C (RED) and terminal E (DK BLU) to the in/out lumbar motor. Ground for the motor is obtained through CKT 211 (DK BLU) or 611 (DK BLU), the in/out relay, and CKT 850 (BLK) to ground G302. This allows the in/out lumbar 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 similar to the out mode, except that the in/out lumbar motor's polarity is reversed, causing the motor to run in the opposite direction and moving the lumbar support in away from the driver's back.