Power Lumbar Circuit Description AL2

Battery positive voltage (B+) is supplied at all times to each seat switch via CKT 3740 (ORN) from the rear fuse block PWR SEAT circuit breaker. The left lumbar switch is supplied ground via CKT 550 (BLK) to G302. The right lumbar switch is supplied ground via CKT 650 (BLK) to G302.

When the lumbar switch is operated to move the lumbar in, battery positive voltage (B+) is applied via the lumbar in switch contacts and CKT 610 (PNK) (LH) or CKT 210 (WHT) (RH) to the lumbar horizontal motor. The motor is grounded via CKT 611 (DK BLU) (LH) or CKT 211 (DK BLU) (RH) and the lumbar out switch contacts to ground. The motor runs to drive the lumbar in, away from the occupant's back, until the switch is released. Moving the lumbar out works similarly to moving the lumbar in except that the battery positive voltage (B+) and ground are on the opposite circuits causing the motor to run in the opposite direction driving the lumbar out, toward the occupant's back.

When the lumbar switch is operated to move the lumbar up, battery positive voltage (B+) is applied via the lumbar up switch contacts and CKT 768 (TAN) (LH) or CKT 793 (PNK) (RH) to the lumbar vertical motor. The motor is grounded via CKT 767 (PPL) (left) or CKT 792 (ORN) (right) and the lumbar down switch contacts to ground. The motor runs to drive the lumbar up until the switch is released. Moving the lumbar down works similarly to moving the lumbar up except that the battery positive voltage (B+) and ground are on the opposite circuits causing the motor to run in the opposite direction driving the lumbar down.

Power Lumbar Circuit Description AC9

Battery positive voltage (B+) is supplied at all times to each adaptive lumbar module via CKT 2840 (ORN) from the rear fuse block MEM T&T Fuse. The left adaptive lumbar module is supplied ground via CKT 550 (BLK) to G302. The right adaptive lumbar module is supplied ground via CKT 650 (BLK) to G302. Battery positive voltage (B+) is supplied with the ignition switch in the ON position to each adaptive lumbar module ignition input via CKT 41 (BRN) from the rear fuse block IGN 3 Fuse. The adaptive seat system only operates when the ignition switch is in the ON position. Battery positive voltage (B+) is supplied with the ignition switch in the ON position to each lumbar switch via CKT 1740 (ORN) from the adaptive lumbar module.

When the lumbar switch is operated to move the lumbar out, battery positive voltage (B+) is applied via the out switch contacts and CKT 1065 (YEL) (left) or CKT 211 (DK BLU) (right) to the adaptive lumbar module. In response to this input, the adaptive lumbar module supplies a pulse width modulated signal via CKT 9172 (BRN) and ground via CKT 9173 (GRY) to the lumbar pump motor. The lumbar pump motor runs to supply air to the lumbar air bladder in the seat back. Adding air to the bladder increases the support. When the lumbar switch is operated to move the lumbar in, battery positive voltage (B+) is applied via the in switch contacts and CKT 1064 (DK BLU) (left) or CKT 210 (WHT) (right) to the adaptive lumbar module. In response to this input, the adaptive lumbar module allows air out of the lumbar support bladder. Releasing air from the bladder decreases the support. The adaptive seat may be manually adjusted at anytime the ignition switch is in the ON position.

When the lumbar switch is moved down in the OFF position, battery positive voltage (B+) is applied via the OFF switch contacts and CKT 2291 (WHT) (left) or CKT 2293 (PPL) (right) to the adaptive lumbar module. In response to this input, the adaptive lumbar module will release all air from the air bladders. When the lumbar switch is moved up in the AUTO/ON position, battery positive voltage (B+) is applied via the AUTO/ON switch contacts and CKT 2290 (PNK) (left) or CKT 2292 (LT BLU/WHT) (right) to the adaptive lumbar module. In response to this input, the adaptive lumbar module will automatically adjust the support to the occupant by supplying a pulse width modulated signal to the lumbar pump motor to add air into the bladder or release air from the bladder.

Power Lumbar Circuit Description A45

Battery positive voltage (B+) is supplied at all times to the left seat switch via CKT 3740 (ORN) from the rear fuse block PWR SEAT circuit breaker. The left seat switch is supplied ground via CKT 550 (BLK) to G302.

When the left lumbar switch is operated to move the lumbar in, battery positive voltage (B+) is applied via the lumbar in switch contacts and CKT 1064 (DK BLU) to the memory seat module (MSM). In response to this input, the MSM supplies battery positive voltage (B+) via CKT 610 (PNK) and ground via CKT 611 (DK BLU) to the left lumbar horizontal motor. The motor runs to drive the lumbar in, away from the driver's back, until the switch is released. When the left lumbar switch is operated to move the lumbar out, battery positive voltage (B+) is applied via the lumbar out switch contacts and CKT 1065 (YEL) to the MSM. In response to this input, the MSM supplies battery positive voltage (B+) via CKT 611 (DK BLU) and ground via CKT 610 (PNK) to the lumbar horizontal motor. The motor runs to drive the lumbar out, toward the driver's back, until the switch is released. The MSM will also control the left lumbar horizontal motor during memory recall functions.

When the left lumbar switch is operated to move the lumbar up, battery positive voltage (B+) is applied via the lumbar up switch contacts and CKT 1066 (WHT) to the memory seat module (MSM). In response to this input, the MSM supplies battery positive voltage (B+) via CKT 768 (TAN) and ground via CKT 767 (PPL) to the left lumbar vertical motor. The motor runs in order to drive the lumbar up until the switch is released. When the left lumbar switch is operated in order to move the lumbar down, battery positive voltage (B+) is applied via the lumbar down switch contacts and CKT 1067 (YEL/BLK) to the MSM. In response to this input, the MSM supplies battery positive voltage (B+) via CKT 767 (PPL) and ground via CKT 768 (TAN) to the lumbar vertical motor. The motor runs to drive the lumbar down until the switch is released. The MSM will also control the left lumbar vertical motor during memory recall functions.

The memory seat module (MSM) supplies a 5 volt reference voltage via CKT 788 (GRY) and reference ground via CKT 782 (BLK) to the respective lumbar position sensors. The MSM receives the feedback voltage input from the lumbar horizontal position sensor via CKT 1063 (YEL). The MSM receives the feedback voltage input from the lumbar vertical position sensor via CKT 1062 (BLK).

Power Lumbar Circuit Description AM3

Battery positive voltage (B+) is supplied at all times to the driver seat switch via CKT 2840 (ORN) from the rear fuse block MEM T&T fuse. Battery positive voltage (B+) is supplied at all times to the passenger seat switch via CKT 3740 (ORN) from the rear fuse block PWR SEAT circuit breaker. The passenger seat switch is supplied ground via CKT 650 (BLK) (LH drive) or CKT 550 (BLK) (RH drive) to G302.

When the driver lumbar switch is operated to move the lumbar in, battery positive voltage (B+) is applied via the lumbar in switch contacts and CKT 1064 (DK BLU) to the memory seat module (MSM). In response to this input, the MSM supplies battery positive voltage (B+) via CKT 610 (PNK) and ground via CKT 611 (DK BLU) to the driver lumbar horizontal motor. The motor runs to drive the lumbar in, away from the driver's back, until the switch is released. When the driver lumbar switch is operated to move the lumbar out, battery positive voltage (B+) is applied via the lumbar out switch contacts and CKT 1065 (YEL) to the MSM. In response to this input, the MSM supplies battery positive voltage (B+) via CKT 611 (DK BLU) and ground via CKT 610 (PNK) to the lumbar horizontal motor. The motor runs to drive the lumbar out, toward the driver's back, until the switch is released. The MSM also controls the driver lumbar horizontal motor during memory recall functions. When the passenger lumbar switch is operated to move the lumbar in, battery positive voltage (B+) is applied to the lumbar in switch contacts. Battery positive voltage (B+) is then supplied via CKT 610 (PNK) and ground via CKT 611 (DK BLU) to the passenger lumbar horizontal motor. The motor runs to drive the lumbar in until the switch is released. In a similar manner, when the lumbar switch is operated to move the lumbar out, battery positive voltage (B+) is applied to the passenger lumbar horizontal motor via CKT 611 (DK BLU) and ground via CKT 610 (PNK). The motor runs to drive the lumbar out until the switch is again released.

When the driver lumbar switch is operated to move the lumbar up, battery positive voltage (B+) is applied via the lumbar up switch contacts and CKT 1066 (WHT) to the memory seat module (MSM). In response to this input, the MSM supplies battery positive voltage (B+) via CKT 768 (TAN) and ground via CKT 767 (PPL) to the lumbar massage module. The lumbar massage module in turn supplies battery positive voltage (B+) via CKT 768 (TAN) and ground via CKT 767 (PPL) to the driver lumbar vertical motor. The motor runs in order to drive the lumbar up until the switch is released. If the switch is operated momentarily, the lumbar massage module will cycle the voltage to the driver lumbar vertical motor. The motor will then move up and down for 10 minutes or until the lumbar switch is operated to move the lumbar down. When the driver lumbar switch is operated in order to move the lumbar down, battery positive voltage (B+) is applied via the lumbar down switch contacts and CKT 1067 (YEL/BLK) to the MSM. In response to this input, the MSM supplies battery positive voltage (B+) via CKT 767 (PPL) and ground via CKT 768 (TAN) to the lumbar massage module. The lumbar massage module in turn supplies battery positive voltage (B+) via CKT 767 (PPL) and ground via CKT 768 (TAN) to the driver lumbar vertical motor. The motor runs to drive the lumbar down until the switch is released. The MSM also controls the driver lumbar vertical motor during memory recall functions. When the passenger lumbar switch is operated to move the lumbar up, battery positive voltage (B+) is applied via the lumbar up switch contacts and CKT 793 (RED) to the lumbar massage module. In response to this input, the lumbar massage module supplies battery positive voltage (B+) via CKT 793 (TAN) and ground via CKT 792 (PPL) to the passenger lumbar vertical motor. The motor runs in order to drive the motor up until the switch is released. If the switch is operated momentarily, the lumbar massage module will cycle the voltage to the passenger lumbar vertical motor. The motor will then move up and down for 10 minutes or until the lumbar switch is operated to move the lumbar down. When the passenger lumbar switch is operated to move the lumbar down, battery positive voltage (B+) is applied via the lumbar down switch contacts and CKT 792 (YEL) to the lumbar massage module. In response to this input, the lumbar massage module supplies battery positive voltage (B+) via CKT 792 (PPL) and ground via CKT 793 (TAN) to the passenger lumbar vertical motor. The motor runs in order to drive the motor down until the switch is released.

The memory seat module (MSM) and the lumbar massage module supply a 5 volt reference voltage via CKT 788 (GRY) and reference ground via CKT 782 (BLK) to the respective lumbar position sensors. The MSM receives the feedback voltage input from the lumbar horizontal position sensor via CKT 1063 (YEL). The lumbar massage module receives the feedback voltage input from the lumbar vertical position sensor via CKT 1062 (BLK).