Ford 2003 Mustang Workshop Manual page 3908

Symptom Chart
SYMPTOM CHART
Condition
The convertible top does not
raise/lower
The convertible top
hesitates/comes up uneven
The convertible top does not
raise or does not go up all the
way
The convertible top hydraulic
system
PINPOINT TEST A: THE CONVERTIBLE TOP DOES NOT
RAISE/LOWER
A1 CHECK THE CONVERTIBLE TOP OPERATION
NOTE: The parking brake must be applied for the convertible top
system to operate.
Key in ON position.
Depress the convertible top switch in RAISE and LOWER
positions while listening for motor operation.
Does the convertible top motor assembly operate in both
directions?
A2 CHECK THE POWER SUPPLY TO THE CONVERTIBLE TOP
SWITCH
Key in OFF position.
Disconnect: Convertible Top Switch C3115.
Key in ON position.
Measure the voltage between convertible top switch C3115 pin 4,
circuit 296 (WH/PK), harness side and ground.
Possible Sources
Convertible top
switch.
Central junction box
(CJB) Fuse 20 (15A).
Parking brake switch.
Lower relay.
Raise relay.
Circuitry.
Convertible top
adjustment.
Hydraulic lift
cylinders.
Hydraulic system.
Convertible top
adjustment.
Hydraulic lift
cylinders.
Hydraulic system.
Convertible top
adjustment.
Hydraulic lift
cylinders.
Hydraulic motor/pump
assembly.
Hydraulic system.
Test Step
Action
Go To
Pinpoint Test
A .
Go To
Pinpoint Test
B .
Go To
Pinpoint Test
C .
Go To
Pinpoint Test
D .
Result / Action to
Take
Yes
Go To Pinpoint Test
C .
No
GO to A2 .
Yes
GO to A3 .
No
REPAIR circuit 296
(WH/PK). TEST the
system for normal
operation.