Visual Inspection and Diagnostic Pre-checks
PINPOINT TEST A : THE POWER SEAT IS INOPERATIVE OR DOES NOT OPERATE CORRECTLY — PASSENGER
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.
A1 CHECK THE SEAT OPERATION
REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures). Disconnect: Passenger Side Airbag In-line C219. Attempt to operate the seat in all directions.
Is the seat inoperative in all directions?
Yes | GO to A2 |
|---|---|
No | If only the horizontal motor is inoperative, GO to A4 If only the front height motor is inoperative, GO to A6 If only the rear height motor is inoperative, GO to A8 |
A2 CHECK FOR VOLTAGE TO THE SEAT CONTROL SWITCH
Disconnect: Passenger Seat Control Switch C3190. Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C3190-8 | Ground |
Is the voltage greater than 11 volts?
Yes | GO to A3 |
|---|---|
No | VERIFY BJB fuse 13 (30A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short. GO to A10 |
A3 CHECK THE SEAT CONTROL SWITCH GROUND CIRCUIT
Measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C3190-10 | Ground |
Is the resistance 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. GO to A10 |
A4 CHECK FOR VOLTAGE TO THE SEAT HORIZONTAL MOTOR
Disconnect: Passenger Seat Horizontal Motor C332.
NOTE: The voltage being measured changes polarity depending upon which direction the seat control switch is activated. While pushing the horizontal switch forward and rearward, measure:
Click to display connectors
Positive Lead | Measurement / Action | Negative Lead |
|---|---|---|
C332-1 | C332-3 |
Is the voltage greater than 11 volts when the seat control switch is operated in both directions?
Yes | INSTALL a new horizontal motor. REFER to: Front Seat Track Motor (501-10A Front Seats, Removal and Installation). GO to A10 |
|---|
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.