Ford 2003 Mustang Workshop Manual page 3668

The power seat does not
move vertically — front
The power seat does not
move vertically — rear
The power seat does not
move horizontally
The power lumbar is
inoperative
The power bolster/lumbar is
inoperative (Cobra only)
Pinpoint Tests
PINPOINT TEST A: THE POWER SEAT IS INOPERATIVE
A1 CHECK CIRCUIT 566 (DG)
Disconnect: Seat Regulator Control Switch C360.
Measure the voltage between seat regulator control
switch C360-2, Circuit 566 (DG), harness side and
ground.
Is the voltage greater than 10 volts?
A2 CHECK CIRCUIT 1205 (BK) FOR AN OPEN
Measure the resistance between seat regulator control
switch C360-4, Circuit 1205 (BK), harness side and
ground.
Seat track.
Seat regulator control
switch.
Seat track.
Circuitry.
Seat regulator control
switch.
Seat track.
Circuitry.
Seat regulator control
switch.
Seat track.
Circuitry.
Lumbar motor.
Lumbar seat control
switch.
Circuitry.
Bolster/lumbar pump
and solenoid module.
Bolster/lumbar seat
control switches.
Circuitry.
Test Step
Go To
Pinpoint Test
B .
Go To
Pinpoint Test
C .
Go To
Pinpoint Test
D .
Go To
Pinpoint Test
E .
Go To
Pinpoint Test
F .
Result / Action to Take
Yes
GO to A2 .
No
REPAIR the circuit. TEST the
system for normal operation.
Yes
GO to A3 .
No
REPAIR the circuit. TEST the
system for normal operation.