Test A: The Memory Seat Is Inoperative/Does Not Operate Correctly
PINPOINT TEST A: THE MEMORY SEAT IS INOPERATIVE/DOES NOT OPERATE CORRECTLYNormal Operation
The driver seat control switch receives voltage on circuit 1524 (DB) and ground on circuit 57 (BK). When pressed, the driver seat control switch supplies voltage to the appropriate driver door module (DDM) seat control switch input circuit. The DDM transmits the driver seat control switch input data to the driver seat module (DSM) via the standard corporate protocol (SCP) communication bus. The DSM receives the input signals and then supplies voltage and ground to the appropriate power seat track motor or recliner circuits. The DSM will reverse the motor circuit polarity to operate the seat track or recliner motor in the opposite direction.
The DSM receives voltage on circuits 490 (RD) and 1524 (DB) and ground on circuits 57 (BK) and 676 (PK/OG).
A 3-lead sensor is attached to each motor on the memory seat track and recliner assembly. The sensor circuits are connected to the DSM which supplies the sensor voltage and receives the sensor signals. The DSM receives data from the memory seat position sensors to monitor the positions of the seat track and recliner motors. This motor position data is stored when the DSM receives a SET switch input signal and recalled when it receives a RECALL switch input signal. The DDM is directly connected to the memory SET/RECALL switch and transmits the switch signal data to the DSM using the SCP communication bus. The DSM also receives memory recall signals from the remote transmitter over the SCP communication bus transmitted by the lighting control module (LCM).
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Seat control switch
- Seat track motor
- Memory seat position sensor
- DDM
- DSM
A1:
A2-A5:
A5-A6:
A6-A7:
A8-A11:
A11-A13:
A13-A15:
A15-A17:
A17-A19:
A19-A20:
A20-A22:
A22-A24:
A24-A25:
A25-A27:
A27-A29:
A29-A30:
A30-A31:
A31-A32:
