DTC | Description | Fault Trigger Conditions |
|---|---|---|
B1719 Seat Driver Forward Switch Circuit Short to Battery | If voltage is sensed on the switch input circuit during the DSM self-test, the DTC is set. If voltage is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored. | |
B1723 Seat Driver Rearward Switch Circuit Short to Battery | If voltage is sensed on the switch input circuit during the DSM self-test, the DTC is set. If voltage is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored. | |
B1727 Seat Driver Rear Up Switch Circuit Short to Battery | If voltage is sensed on the switch input circuit during the DSM self-test, the DTC is set. If voltage is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored. | |
B1731 Seat Driver Rear Down Switch Circuit Short to Battery | If voltage is sensed on the switch input circuit during the DSM self-test, the DTC is set. If voltage is sensed on the input circuit for greater than 2 minutes, the DTC is set as continuous. With the DTC set, any input signal on the circuit is ignored. |
Possible Causes
Fuse Wiring, terminals or connectors Seat control switch Horizontal motor Seat track DSM
Visual Inspection and Diagnostic Pre-checks
Verify BCM fuse 2 (7.5A) is OK. Verify BJB fuse 12 (30A) is OK.
PINPOINT TEST C : THE MEMORY SEAT DOES NOT OPERATE HORIZONTALLY/VERTICALLY USING THE SEAT CONTROL SWITCH
WARNING: Incorrect repair techniques or actions can cause an accidental Supplemental Restraint System (SRS) deployment. Never compromise or depart from these instructions. Failure to precisely follow all instructions could result in serious personal injury from an accidental deployment.
C1 RETRIEVE THE DSM (DRIVER FRONT SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures). Disconnect: Driver Side Airbag In-line C345. Ignition ON. Activate the seat control switch in all directions. Using a diagnostic scan tool, perform DSM self-test. If the diagnostic scan tool does not communicate with the DSM, REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
Are any DSM Diagnostic Trouble Codes (DTCs) present?
Yes | If Diagnostic Trouble Codes (DTCs) B1663, B1664, and B1665 are all retrieved, GO to C10 For DTC B1711, B1715, B1719, B1723, B1727 or B1731, GO to C3 For DTC B1663, GO to C18 For DTC B1664, GO to C21 For DTC B1665, GO to C24 For all other Diagnostic Trouble Codes (DTCs), REFER to the DSM DTC Chart. GO to C28 |
|---|---|
No | GO to C2 |
C2 CHECK THE DSM (DRIVER FRONT SEAT MODULE) SEAT CONTROL SWITCH PARAMETER IDENTIFICATIONS (PIDS)
While operating the seat control switch in all positions, monitor the following DSM seat control switch Parameter Identifications (PIDs) using a diagnostic scan tool:
Driver Power Seat Front Up/Down Switch (SFNT_SW) Driver Power Seat Forward/Backward Switch (SFWD_SW) Driver Power Seat Rear Up/Down Switch (SREARSW)
Do the PID states agree with the switch positions?
Yes | GO to C9 |
|---|---|
No | VERIFY BJB fuse 12 (30A) is OK. If OK, GO to C3 If not OK or fails while operating the seat control switch, DISCONNECT the seat control switch C3387 and GO to C7 |
C3 CHECK THE SEAT CONTROL SWITCH
Ignition OFF. Remove the driver seat control switch. REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation). Carry out the seat control switch component test. Refer to Wiring Diagrams Cell 149 for schematic and connector information.
Is the seat control switch OK?
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