Ford 2003 Mustang Workshop Manual page 3913

Is the resistance less than 5 ohms?
A15 CHECK CIRCUIT 903 (RD) FOR AN OPEN
Disconnect: Raise Relay C4063.
Measure the resistance between raise relay C4063 pin 30, circuit
903 (RD), harness side and convertible top motor C4062, circuit
903 (RD), harness side.
Is the resistance less than 5 ohms?
A16 CHECK THE RAISE INPUT TO THE MOTOR
Key in ON position.
Depress and hold the convertible top switch in the RAISE position.
Measure the voltage between convertible top motor C4062, circuit
903 (RD), harness side and ground.
Is the voltage greater than 10 volts?
PINPOINT TEST B: THE CONVERTIBLE TOP HESITATES/COMES UP
UNEVEN
B1 CHECK THE CONVERTIBLE TOP UP/DOWN
OPERATION
NOTE: The parking brake must be applied for the
Test Step
Yes
INSTALL a new raise
relay. TEST the
system for normal
operation.
No
REPAIR the circuit.
TEST the system for
normal operation.
Yes
INSTALL a new
convertible top motor;
REFER to
System, Lift Cylinder
and Motor
section. TEST the
system for normal
operation.
No
INSTALL a new raise
relay. TEST the
system for normal
operation.
Result / Action to Take
Yes
Hydraulic
in this