Yes | GO to Q4 |
|---|---|
No | If the backrest blower motor resistance measurement failed, INSTALL a new backrest blower motor. REFER to: Front Seat Backrest Blower Motor (501-10 Front Seats) . GO to Q5 If the cushion blower motor resistance measurement failed, INSTALL a new cushion blower motor. REFER to: Front Seat Cushion Blower Motor (501-10A Front Seats, Removal and Installation). GO to Q5 |
Q4 CHECK THE SCME (FRONT SEAT CLIMATE CONTROL MODULE) OPERATION
Ignition OFF. Disconnect and inspect all of the SCME connectors. Repair:
corrosion (install new connector or terminals - clean module pins) damaged or bent pins - install new terminals/pins as necessary pushed-out pins - install new pins as necessary
Reconnect the SCME connectors. Make sure they seat and latch correctly.
NOTE: Do not reconnect Passenger Side Airbag In-line C219 at this time. Reconnect all previously disconnected connectors. Ignition ON. Operate the system and determine if the concern is still present.
Is the concern still present?
Yes | CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new SCME. REFER to: Front Seat Climate Control Module [SCME] (501-10A Front Seats, Removal and Installation). GO to Q5 |
|---|---|
No | The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues. GO to Q5 |
Q5 VERIFY THE SUPPLEMENTAL RESTRAINT SYSTEM (SRS) PROVES OUT SUCCESSFULLY
REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures). Connect: Passenger Side Airbag In-line C219. Connect all previously disconnected connectors.
REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).
Did the SRS prove out successfully?
Yes | Repair is complete. RETURN the vehicle to the customer. |
|---|---|
No | REFER to: Airbag Supplemental Restraint System (SRS) (501-20B Supplemental Restraint System, Diagnosis and Testing). |
DTC B19A1
Refer to Wiring Diagrams Cell 119 for schematic and connector information.
Normal Operation and Fault Conditions
The SCME supplies voltage and ground to the passenger seat cushion backrest and cushion blower motors. The SCME also sends a speed control voltage signal to the blower motor to control blower speed.
DTC Fault Trigger Conditions
DTC | Description | Fault Trigger Conditions |
|---|---|---|
B19A1 Passenger Seat Cushion Blower Speed Short to Battery | If the passenger seat cushion blower speed circuit is shorted to voltage, the SCME shuts down the passenger seat system and sets this DTC. |
Possible Causes
Wiring, terminals or connectors Cushion blower motor SCME
PINPOINT TEST R : DTC B19A1
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.
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.