Yes | GO to AB3 |
|---|---|
No | If the driver seat cushion PID varies 10° C (18° F) or more from ambient temperature, GO to AB16 If the driver seat backrest PID varies 10° C (18° F) or more from ambient temperature, GO to AB32 |
AB3 CONFIRM THE FAULT IS IN THE SEAT CUSHION OR THE BACKREST
Ignition OFF. Start the engine.
NOTE: A crushed seat cushion foam pad may be the cause of the fault. It may be necessary to sit on the seat or place something of reasonable size and weight on the seat to recreate the fault. After cycling the ignition and with the engine running, set the driver seat to high heat. Allow the seat to heat for at least 15 minutes while monitoring the blower motor temperature Parameter Identifications (PIDs) of the driver seat.
Do the driver seat cushion blower motor and backrest blower motor Parameter Identifications (PIDs) vary more than 60° C (108° F) from each other?
Yes | If the driver seat cushion PID is 60° C (108° F) hotter than the backrest PID, GO to AB5 If the driver seat backrest PID is 60° C (108° F) hotter than the cushion PID, GO to AB20 |
|---|---|
No | GO to AB4 |
AB4 CHECK THE BLOWER MOTOR COOLING PERFORMANCE
Check the blower motors cooling performance on the affected seat. Refer to Component Test — Blower Motor Cooling Performance in this section.
Did the blower motors pass the component test?
Yes | The DTC may have been set by extreme cabin temperatures or excessive sunload on the seat causing the system to enter recovery mode. Occupant size and weight characteristics can also be a factor. CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. TEST the system for normal operation. If a concern cannot be found or duplicated, RETURN the vehicle to the customer. |
|---|---|
No | CHECK the affected seat cushion or backrest for correct installation of the climate controlled seat components (blower motor, air ducts and foam pad). CHECK for airflow restrictions (blower motor inlets and outlets, filters and ducts) and REPAIR as needed. CHECK for an intermittent wiring fault. REPAIR as needed. CLEAR the Diagnostic Trouble Codes (DTCs). REPEAT the self-test. |
AB5 CHECK FOR CORRECT BLOWER MOTOR INSTALLATION AND FOR CRUSHED FOAM
Ignition OFF. Remove the seat. REFER to: Front Seat (501-10A Front Seats, Removal and Installation). Remove the seat cushion trim cover. REFER to: Front Seat Cushion Cover (501-10A Front Seats, Removal and Installation). Inspect the driver seat cushion for the following:
Cushion blower obstructed Blower filter restricted or plugged Blower motor correctly installed Seat cushion foam pad crushed or restricted
Is the blower motor correctly installed and the foam pad OK?
Yes | GO to AB6 |
|---|---|
No | Correctly INSTALL the cushion blower motor or INSTALL a new seat cushion foam pad. |
AB6 CHECK BACKREST BLOWER MOTOR THERMO ELECTRIC DEVICE CIRCUIT FOR A SHORT TO VOLTAGE
REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures). Position the driver seat in the vehicle and connect the seat-to-floor connectors. Disconnect: Driver Side Airbag In-line C345. Disconnect: Passenger Side Airbag In-line C219. Disconnect: SCME C3265A. Ignition ON. Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C3265A-K | Ground |
Is any voltage present?
Yes | REPAIR the circuit. GO to AB36 |
|---|---|
No | GO to AB7 |
AB7 CHECK BACKREST BLOWER MOTOR THERMO ELECTRIC DEVICE CIRCUIT FOR A SHORT TO GROUND
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.