Normal Operation
The driver seat control switch is powered by battery voltage to the driver seat control switch, circuit 566 (DG), and is supplied ground on driver circuit 1205 (BK). When pressed, the seat control switch supplies that voltage and ground to a power seat track motor or power recliner motor to move the seat or backrest. When pressed in the opposite direction, the seat control switch reverses the polarity to that same power seat track motor or power recliner motor, which moves the seat or backrest in the opposite direction. There are 3 power seat track motors that combine to move the seat cushion horizontally
(FORWARD/REARWARD) and vertically (front UP/DOWN and rear UP/DOWN). There is an additional motor in the power recliner mechanism to move the seat backrest forward and rearward. If a new motor needs to be installed, it is necessary to install an entire power seat track or power recliner mechanism.
The driver seat control switch is powered by battery voltage to the driver seat control switch, circuit 566 (DG), and is supplied ground on driver circuit 1205 (BK). When pressed, the seat control switch supplies that voltage and ground to a power seat track motor to move the seat. When pressed in the opposite direction, the seat control switch reverses the polarity to that same power seat track motor, which moves the seat in the opposite direction. There are 3 power seat track motors that combine to move the seat cushion horizontally (FORWARD/REARWARD) and vertically (front UP/DOWN and rear UP/DOWN). If a new motor needs to be installed, it is necessary to install an entire power seat track.
The passenger seat control switch is powered by battery voltage to the passenger seat control switch, circuit 1462 (RD/WH), and is supplied ground on passenger circuit 1205 (BK). When pressed, the seat control switch supplies that voltage and ground to the power seat track motor or power recliner motor to move the seat or backrest. When pressed in the opposite direction, the seat control switch reverses the polarity to the power seat track motor or power recliner motor, which moves the seat or backrest in the opposite direction. There is one power seat track motor which moves the seat cushion horizontally (FORWARD/REARWARD) and an additional motor in the power recliner mechanism to move the seat backrest forward and rearward. If a new motor needs to be installed, it is necessary to install an entire power seat track or power recliner mechanism.
The passenger seat control switch is powered by battery voltage to the passenger seat control switch, circuit 1462 (RD/WH), and is supplied ground on passenger circuit 1205 (BK). When pressed, the seat control switch supplies that voltage and ground to the power seat track motor to move the seat. When pressed in the opposite direction, the seat control switch reverses the polarity to the power seat track motor, which moves the seat in the opposite direction. There is one power seat track motor which moves the seat horizontally (FORWARD/REARWARD). If a new motor needs to be installed, it is necessary to install an entire power seat track.
The driver seat control switch is powered by battery voltage on driver circuit 566 (DG) and is supplied ground on circuit 1205 (BK). When pressed, the seat control switch supplies that voltage and ground to a power seat track motor or power recliner motor to move the seat or backrest. When pressed in the opposite direction, the seat control switch reverses the polarity to that same power seat track motor or power recliner motor, which moves the seat or backrest in the opposite direction. There are 3 power seat track motors that combine to move the seat cushion horizontally
(FORWARD/REARWARD) and vertically (front UP/DOWN and rear UP/DOWN). There is an additional motor in the power recliner mechanism to move the seat backrest forward and rearward. If a new motor needs to be installed, it is necessary to install an entire power seat track or power recliner mechanism.
The driver seat control switch is powered by battery voltage on driver circuit 566 (DG) and is supplied ground on circuit 1205 (BK). When pressed, the seat control switch supplies that voltage and ground to a power seat track motor to move the seat. When pressed in the opposite direction, the seat control switch reverses the polarity to that same power seat track motor, which moves the seat in the opposite direction. There are 3 power seat track motors that combine to move the seat cushion horizontally (FORWARD/REARWARD) and vertically (front UP/DOWN and rear UP/DOWN). If a new motor needs to be installed, it is necessary to install an entire power seat track.
The passenger seat control switch is powered by battery voltage on circuit 1462 (RD/WH) and is supplied ground on circuit 1205 (BK). When pressed, the seat control switch supplies that voltage and ground to a power seat track motor to move the seat. When pressed in the opposite direction, the seat control switch reverses the polarity to that same power seat track motor, which moves the seat in the opposite direction. There is a power seat track motor that moves the seat horizontally (FORWARD/REVERSE) and a motor in the power recliner mechanism that moves the seat backrest forward or rearward.
The power seat should move quietly during operation. Some noise is acceptable.
The power seat movement should be smooth and the seat cushion should not rock during or after operation.
The driver power seat should travel fully horizontal (FORWARD/REARWARD) and vertical (front UP/DOWN and rear UP/DOWN). The passenger power seat should travel fully horizontal (FORWARD/REARWARD).
The driver seat control switch is powered by battery voltage on circuit 956 (OG/LG) and is supplied ground on circuit 1205 (BK). When pressed, the seat control switch supplies the voltage and ground to the applicable driver seat module (DSM) inputs. The DSM then supplies voltage and ground to the appropriate power seat track motor based on the inputs received from the seat control switch. When pressed in the opposite direction, the seat control switch reverses the polarity to the DSM inputs, and the DSM likewise reverses polarity of the appropriate power seat track motor or power recliner motor circuits causing the seat or backrest to move in the opposite direction. There are 3 power seat track motors that combine to move the seat horizontally (FORWARD/REARWARD) and vertically (front UP/DOWN and rear UP/DOWN). The seat backrest power recliner mechanism uses a single motor to move the seat backrest FORWARD and REARWARD.
Battery voltage is also supplied to DSM circuit 566 (DG) and is supplied ground to DSM circuit 1203 (BK/LB).
Each motor in the memory power seat track and power recliner mechanism contains a Hall-effect position sensor. The DSM supplies a signal feed circuit to each position sensor and a shared reference signal return circuit. Each position sensor sends a signal voltage back to the DSM used to monitor the position of the power seat and seat backrest. The DSM uses this information to return the seat to a stored pre-programmed position when pressing the memory SET switch or a remote entry transmitter. Refer to PRINCIPLES OF OPERATION or the owner's literature for additional information on programming the DSM for storing memory seat positions.
The following pinpoint test diagnoses a memory seat that does not operate in one or more directions when using the seat control switch. If the memory seat moves in all directions using the seat control switch, GO to PINPOINT TEST G .
The driver seat control switch is powered by battery voltage on circuit 956 (OG/LG) and is supplied ground on circuit 1205 (BK). When pressed, the seat control switch supplies the voltage and ground to the applicable driver seat module (DSM) inputs. The DSM then supplies voltage and ground to the appropriate power seat track motor based on the inputs received from the seat control switch. When pressed in the opposite direction, the seat control switch reverses the polarity to the DSM inputs, and the DSM likewise reverses polarity of the appropriate power seat track motor or power recliner motor circuits causing the seat or backrest to move in the opposite direction. There are 3 power seat track motors that combine to move the seat horizontally (FORWARD/REARWARD) and vertically (front UP/DOWN and rear UP/DOWN). The seat backrest power recliner mechanism uses a single motor to move the seat backrest FORWARD and REARWARD.
Battery voltage is also supplied to DSM circuit 566 (DG) and is supplied ground to DSM circuit 1203 (BK/LB).
Each motor in the memory power seat track and power recliner mechanism contains a Hall-effect position sensor. The DSM supplies a signal feed circuit to each position sensor and a shared reference signal return circuit. Each position sensor sends a signal voltage back to the DSM used to monitor the position of the power seat and seat backrest. The DSM uses this information to return the seat to a stored pre-programmed position when pressing the memory SET switch or a remote entry transmitter. Refer to the owner literature or PRINCIPLES OF OPERATION . For additional information on programming the DSM for storing memory seat positions.
The following pinpoint test diagnoses a memory seat that does not operate correctly using the memory SET switch. If the memory seat does not move in all directions using the seat control switch, GO to PINPOINT TEST K .
The driver and passenger heated seat modules share a common battery and ignition feed and have a separate ground source. The electronic automatic temperature control (EATC) module includes the heated seat control buttons and indicators. The heated seat system will function when the EATC module is ON or OFF. When a heated seat control button on the EATC module is pressed with the ignition switch in RUN or START, a momentary ground signal is sent to the heated seat module. Upon receiving a signal, the heated seat module will decrease one setting (the sequence is HI, LO, OFF, HI, etc.). When the heated seat system is ON, the heated seat module then supplies power to the heating element circuit. The cushion element and backrest element are wired in series and powered by the same output. The heated seat module will remain on for 10 minutes or until the heated seat control button is pressed to cycle the heated seat module to the OFF state. If the ignition source is removed from the module, the heated seat module will enter an OFF state and will not return to ON until the heated seat control button is once again pressed with the ignition switch in RUN.
The driver and passenger heated seat modules share a common battery and ignition feed and have a separate ground source. The electronic automatic temperature control (EATC) module includes the heated seat control buttons and indicators. The heated seat system will function when the EATC module is ON or OFF. When a heated seat control button on the EATC module is pressed with the ignition switch in RUN or START, a momentary ground signal is sent to the heated seat module. Upon receiving a signal, the heated seat module will decrease one setting (the sequence is HI, LO, OFF, HI, etc.). When the heated seat system is ON, the heated seat module then supplies power to the heating element circuit. The cushion element and backrest element are wired in series and powered by the same output. The heated seat module will remain on for 10 minutes or until the heated seat control button is pressed to cycle the heated seat module to the OFF state. If the ignition source is removed from the module, the heated seat module will enter an OFF state and will not return to ON until the heated seat control button is once again pressed with the ignition switch in RUN.
Upon receiving a signal from the electronic automatic temperature control (EATC) module, the heated seat module will decrease one setting (the sequence is HI, LO, OFF, HI, etc.). When a heated seat is set to HI, both LED indicators above the heated seat control button will illuminate. When a heated seat is set to LO, only the left LED indicator will illuminate. When a heated seat is set to OFF, neither LED will be illuminated.
Upon receiving a signal from the electronic automatic temperature control (EATC) module, the heated seat module will decrease one setting (the sequence is HI, LO, OFF, HI, etc.). When a heated seat is set to HI, both LED indicators above the heated seat control button will illuminate. When a heated seat is set to LO, only the left LED indicator will illuminate. When a heated seat is set to OFF, neither LED will illuminate.