Battery positive voltage (B+) is supplied at all times to the memory seat module (MSM) via CKT 2840 (ORN) from the MEM T&T fuse in the rear junction block. The MSM is supplied ground through CKT 550 (BLK) to G302. Battery positive voltage (B+) is supplied at all times to the MSM via CKT 3740 (ORN) from the rear junction block PWR SEAT circuit breaker, which is used by the MSM to control the seat motors. Each motor contains an electronic circuit breaker (PTC), which will reset only after voltage has been removed from the motor. Battery positive voltage (B+) is supplied at all times to the RH seat switch via CKT 2840 (ORN) from the MEM T&T fuse in the rear junction block.
Forward/Back
When the RH seat switch is operated to move the entire seat forward, battery positive voltage (B+) is applied via the entire seat forward switch contacts and CKT 1522 (TAN) to the MSM. In response to this input, the MSM supplies battery positive voltage (B+) via CKT 285 (TAN) and ground via CKT 284 (LT GRN) to the RH forward/back motor. The motor runs to drive the seat forward until the switch is released. When the RH seat switch is operated to move the entire seat back, battery positive voltage (B+) is applied via the entire seat back switch contacts and CKT 1523 (LT GRN) to the MSM. In response to this input, the MSM supplies battery positive voltage (B+) via CKT 284 (LT GRN) and ground via CKT 285 (TAN) to the RH forward/back motor. The motor runs to drive the seat back until the switch is released. The MSM will also control the RH forward/back motor during memory recall and easy exit functions.
Rear Height
When the RH seat switch is operated to move the rear height up, battery positive voltage (B+) is applied via the rear height up switch contacts and CKT 1519 (YEL) to the MSM. In response to this input, the MSM supplies battery positive voltage (B+) via CKT 282 (YEL) and ground via CKT 283 (LT BLU) to the RH rear height motor. The motor runs to drive the rear of the seat up until the switch is released. When the RH seat switch is operated to move the rear height down, battery positive voltage (B+) is applied via the rear height down switch contacts and CKT 1521 (LT BLU) to the MSM. In response to this input, the MSM supplies battery positive voltage (B+) via CKT 283 (LT BLU) and ground via CKT 282 (YEL) to the RH rear height motor. The motor runs to drive the rear of the seat down until the switch is released. The MSM will also control the RH rear height motor during memory recall and easy exit functions.
Front Height
When the RH seat switch is operated to move the front height up, battery positive voltage (B+) is applied via the front height up switch contacts and CKT 1518 (DK GRN) to the MSM. In response to this input, the MSM supplies battery positive voltage (B+) via CKT 286 (DK GRN) and ground via CKT 287 (DK BLU) to the RH front height motor. The motor runs to drive the front of the seat up until the switch is released. When the RH seat switch is operated to move the front height down, battery positive voltage (B+) is applied via the front height down switch contacts and CKT 1520 (DK BLU) to the MSM. In response to this input, the MSM supplies battery positive voltage (B+) via CKT 287 (DK BLU) and ground via CKT 286 (DK GRN) to the RH rear height motor. The motor runs to drive the front of the seat down until the switch is released. The MSM will also control the RH front height motor during memory recall and easy exit functions.
Recline
When the RH seat switch is operated to recline the seatback forward, battery positive voltage (B+) is applied via the recline forward switch contacts and CKT 276 (LT GRN) to the MSM. In response to this input, the MSM supplies battery positive voltage (B+) via CKT 276 (LT GRN/BLK) and ground via CKT 277 (LT BLU) to the RH recline motor. The motor runs to recline the seatback forward until the switch is released. When the RH seat switch is operated to recline the seatback back, battery positive voltage (B+) is applied via the recline back switch contacts and CKT 277 (LT BLU) to the MSM. In response to this input, the MSM supplies battery positive voltage (B+) via CKT 277 (LT BLU) and ground via CKT 276 (LT GRN/BLK) to the RH recline motor. The motor runs to recline the seatback back until the switch is released. The MSM will also control the RH recline motor during memory recall and easy exit functions.
Headrest
When the RH seat switch is operated to move the headrest up, battery positive voltage (B+) is applied via the headrest up switch contacts and CKT 1068 (WHT/BLK) to the MSM. In response to this input, the MSM supplies battery positive voltage (B+) via CKT 1257 (YEL/BLK) and ground via CKT 1258 (PPL/BLK) to the RH headrest motor. The motor runs to drive the headrest up until the switch is released. When the RH seat switch is operated to move the headrest down, battery positive voltage (B+) is applied via the headrest down switch contacts and CKT 1069 (DK BLU/WHT) to the MSM. In response to this input, the MSM supplies battery positive voltage (B+) via CKT 1258 (PPL/BLK) and ground via CKT 1257 (YEL/BLK) to the RH headrest motor. The motor runs to drive the headrest down until the switch is released. The MSM will also control the RH headrest motor during memory recall functions.
Position Sensors
The MSM supplies a 5 volt reference voltage via CKT 788 (GRY) and reference ground via CKT 782 (BLK) to the respective seat position sensors. The MSM receives the feedback voltage input from the forward/back position sensor via CKT 569 (DK GRN). The MSM receives the feedback voltage input from the rear height position sensor via CKT 568 (TAN). The MSM receives the feedback voltage input from the front height position sensor via CKT 557 (BRN/WHT). The MSM receives the feedback voltage input from the recline position sensor via CKT 570 (WHT/BLK). The MSM receives the feedback voltage input from the headrest position sensor via CKT 1060 (RED/BLK).
Memory Function Switch
The RH front power window switch receives inputs from the memory function switch. The RH front door module (RFDM) supplies a reference ground to the memory function switch via CKT 351 (BLK/WHT). When the SET button is pressed, the set input of the RH front power window switch is temporarily grounded through the memory function switch via CKT 614 (ORN). When the 1 button is pressed, the 1 input of the RH front power window switch is temporarily grounded through the memory function switch via CKT 616 (PPL). When the 2 button is pressed, the 2 input of the RH front power window switch is temporarily grounded through the memory function switch via CKT 615 (WHT). When the EXIT button is pressed, both the 1 and 2 inputs of the RH front power window switch are simultaneously grounded through the memory function switch via CKT 616 (PPL) and CKT 615 (WHT).
After receiving an input from the memory function switch, the RH front power window switch sends a simple bus interface message to the RH front door module (RFDM). In response, the RFDM sends a class 2 message to the memory seat module (MSM) indicating that a memory function has been requested.
