Yes | INSTALL a new passenger seat track. REFER to: Front Seat Track (501-10A Front Seats, Removal and Installation). GO to A10 |
|---|---|
No | GO to A9 |
A9 CHECK THE SEAT REAR HEIGHT MOTOR CIRCUIT FOR AN OPEN
Disconnect: Passenger Seat Control Switch C3190. Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C3190-9 | C3075-3 | |
C3190-7 | C3075-1 |
Are the resistances less than 3 ohms?
Yes | INSTALL a new passenger seat control switch. REFER to: Front Seat Control Switch (501-10A Front Seats, Removal and Installation). GO to A10 |
|---|---|
No | REPAIR the circuit in question. GO to A10 |
A10 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). |
The Power Lumbar is Inoperative — Driver
Refer to Wiring Diagrams Cell 120 for schematic and connector information.
Normal Operation and Fault Conditions
REFER to: Front Seats - System Operation and Component Description (501-10A Front Seats, Description and Operation).
Possible Causes
Wiring, terminals or connectors Seat control switch Front seat power lumbar assembly
PINPOINT TEST B : THE POWER LUMBAR IS INOPERATIVE — DRIVER
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.
B1 CHECK FOR VOLTAGE TO THE SEAT LUMBAR MOTOR
REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures). Disconnect: Driver Side Airbag In-line C345. Disconnect: Driver Seat Lumbar Motor C3215.
NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the lumbar switch in both directions, measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C3215-A | C3215-B |
Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
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.