Test G: The Memory Seat Does Not Operate Correctly - Does Not Operate Using the Memory Set Switch
PINPOINT TEST G: THE MEMORY SEAT DOES NOT OPERATE CORRECTLY - DOES NOT OPERATE USING THE MEMORY SET SWITCHNormal Operation
The driver power seat switch is powered by battery voltage on circuit 956 (OG/LG) and is supplied ground on circuit 875 (BK/LB). When pressed, the power seat switch supplies the voltage and ground to the driver seat module (DSM). 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 power seat switch reverses the polarity to the DSM, which moves the seat in the opposite direction. There are 3 power seat track motors that combine to move the seat horizontally (forward/reverse) and vertically (front height and rear height).
Each power seat track motor includes a potentiometer type position sensor. The DSM supplies a shared reference voltage and ground to each position sensor. This enables the position sensor to send a variable voltage back to the DSM to indicate the position of the power seat track motor. The DSM uses this information to return the seat to a stored pre-programmed position when pressing button 1 or 2 on the memory SET switch or if a remote transmitter signal is received. For information on programming memory positions or recalling a stored memory position, refer to Memory Position Programming. The following pinpoint test diagnoses a memory seat that does not operate correctly using the memory SET switch or operates in 1-second intervals. If the memory seat does not move in all directions using the seat control switch, GO to Pinpoint Test F. Test F: The Memory Seat Is Inoperative/Does Not Operate Correctly - Does Not Operate Horizontally/Vertically Programming and Relearning
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Memory SET switch
- Missing status information (network communication bus messages):
- Ignition switch status
- Gear selector position
- Seat track position sensor
- Seat track
- DSM
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G19:
