FORD MUSTANG 2003 Workshop Manual

REMOVAL AND INSTALLATION
Module —
Generic Electronic (GEM)
For additional information, refer to Section 419 - 10 .
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REMOVAL AND INSTALLATION
Switch —
Multi-Function
Removal and Installation
For additional information, refer to Section 211 - 05 .
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SPECIFICATIONS
SECTION 501-
18: Convertible Top 2003 Mustang Workshop Manual General Specifications
Item Specification
Mercon® multi-
purpose automatic transmission fluid XT -2-QDX —
Torque Specifications Description Nm lb-
ft lb-
in Cylinder mounting nut 23 17 —
Rail seal screws 3 — 27
Side rail bolts 63 46 —
Cylinder upper mounting bolt 17 13 —
Cylinder retaining bolts 22 16 —
Front safety belt retractor bolts and nut 30 20 —
Front seal screws 5 — 44
Cylinder rod mounting bolts 12 9 —
Side rail to header bolts 23 17 —
Tacking strip nuts 7 — 62
Hydraulic line to lift cylinder nuts 9 — 80
Hydraulic line to motor nuts 12 9 —
B-
Hinge lock nut 4 — 35
Balance linkage bolts 22 16 —
Adjusting cam set screw 6 — 53 Klj . 1 ba
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DESCRIPTION AND OPERATION
Convertible Top
Rear Window Glass Assembly
The convertible top assembly is equipped with a rear window glass assembly. The rear window glass
assembly is permanently attached to the folding top rear window curtain and cannot be opened. The
rear window glass must be repaired separately.
Stay Pad
The stay pad is attached to the bows and is repaired as a component.
Hydraulic System
The convertible top hydraulic system is comprised of the lift cylinders, the motor, the connecting
hydraulic lines and a convertible top switch. The hydraulic system, except for the convertible top
switch, is removed as an assembly, but the components may be repaired separately.
SECTION 501-
18: Convertible Top 2003 Mustang Workshop Manual Item Part Number Description
1 7652500 Rear glass assembly
2 76533A00 Motor assembly
3 011702 Lift cylinder with hydraulic lines Klj . 1 ba
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DIAGNOSIS AND TESTING
Convertible Top
Refer to Wiring Diagrams Cell
103 , for schematic and connector information.
Principles of Operation
The convertible top will only operate with the parking brake engaged and the ignition switch in the RUN
position. When the parking brake is engaged, the raise and lower relay coils are grounded through the
parking brake switch. The convertible top switch supplies power to the raise or lower relay coil when
raise or lower is selected. This power energizes the coil causing the relay contacts to close which
supplies battery power to the convertible top motor/pump assembly. The normal state of the relay is
connected to ground. When the raise or lower relay is operating, the other relay remains in its normal
state supplying the motor/pump ground.
Convertible Top Adjustments
The convertible top adjustments must be made by a qualified technician.
Inspection and Verification 1. Verify the customer concern by operating the system.
2. Visually inspect for obvious signs of mechanical or electrical damage.
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. If the concern is not visually evident, verify the symptom and refer to the Symptom Chart.
SECTION 501-
18: Convertible Top 2003 Mustang Workshop Manual Special Tool(s)
73 III Automotive Meter
105-
R0057 or equivalent
Visual Inspection Chart Mechanical Electrical
z
Convertible top brackets and
frame
z Hydraulic motor and pump
z Hydraulic lift cylinders
z Door and quarter window glass
adjustment z
Central junction box (CJB) Fuse 20 (15A)
z Battery junction box (BJB) circuit breaker
CONV TOP (30A)
z Wiring harness
z Loose or corroded connections
z Raise or lower relays
z Parking brake switch
z Convertible top switch Klj . 1 ba
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Symptom Chart
PINPOINT TEST A: THE CONVERTIBLE TOP DOES NOT
RAISE/LOWER
SYMPTOM CHART Condition
Possible Sources Action
z The convertible top does not
raise/lower z
Convertible top
switch.
z Central junction box
(CJB) Fuse 20 (15A).
z Parking brake switch.
z Lower relay.
z Raise relay.
z Circuitry. z
Go To Pinpoint Test
A .
z The convertible top
hesitates/comes up uneven z
Convertible top
adjustment.
z Hydraulic lift
cylinders.
z Hydraulic system. z
Go To Pinpoint Test
B .
z The convertible top does not
raise or does not go up all the
way z
Convertible top
adjustment.
z Hydraulic lift
cylinders.
z Hydraulic system. z
Go To Pinpoint Test
C .
z The convertible top hydraulic
system z
Convertible top
adjustment.
z Hydraulic lift
cylinders.
z Hydraulic motor/pump
assembly.
z Hydraulic system. z
Go To Pinpoint Test
D .
Test Step Result / Action to
Take A1 CHECK THE CONVERTIBLE TOP OPERATION
NOTE:
The parking brake must be applied for the convertible top
system to operate.
z Key in ON position.
z Depress the convertible top switch in RAISE and LOWER
positions while listening for motor operation.
z Does the convertible top motor assembly operate in both
directions? Yes
Go To Pinpoint Test
C .
No
GO to A2 .
A2 CHECK THE POWER SUPPLY TO THE CONVERTIBLE TOP
SWITCH z
Key in OFF position.
z Disconnect: Convertible Top Switch C3115.
z Key in ON position.
z Measure the voltage between convertible top switch C3115 pin 4,
circuit 296 (WH/PK), harness side and ground. Yes
GO to
A3 .
No
REPAIR circuit 296
(WH/PK). TEST the
system for normal
operation. Klj . 2 ba
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z
Is the voltage greater than 10 volts? A3 CHECK CIRCUIT 588 (VT) FOR AN OPEN
z
Key in OFF position.
z Connect: Convertible Top Switch C3115.
z Disconnect: Raise Relay C4063.
z Key in ON position.
z Depress and hold the convertible top switch in the RAISE position.
z Measure the voltage between raise relay C4063 pin 85, circuit 588
(VT), harness side and ground.
z Is the voltage greater than 10 volts? Yes
GO to
A4 .
No
GO to A5 .
A4 CHECK CIRCUIT 688 (GY/LB) FOR VOLTAGE
z
Key in OFF position.
z Disconnect: Lower Relay C4064.
z Key in ON position.
z Depress and hold the convertible top switch in the LOWER
position.
z Measure the voltage between lower relay C4064 pin 85, circuit
688 (GY/LB), harness side and ground.
z Is the voltage greater than 10 volts? Yes
GO to
A9 .
No
GO to A8 .
A5 CHECK CIRCUIT 588 (VT) FOR OPEN
z
Key in OFF position.
z Disconnect: Convertible Top Switch C3115.
z Measure the resistance between convertible top switch C3115 pin
3, circuit 588 (VT), harness side and raise relay C4063 pin 85, Yes
INSTALL a new
convertible top switch.
REFER to
Convertible Klj . 3 ba
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circuit 588 (VT), harness side.
z Is the resistance less than 5 ohms? Top Switch in this
section. TEST the
system for normal
operation.
No
REPAIR Circuit 588
(VT). TEST the
system for normal
operation. A6 CHECK CIRCUIT 688 (GY/LB) FOR OPEN
z
Key in OFF position.
z Disconnect: Convertible Top Switch C3115.
z Measure the resistance between convertible top switch C3115 pin
5, circuit 688 (GY/LB), harness side and lower relay C4064 pin 85,
circuit 688 (GY/LB), harness side.
z Is the resistance less than 5 ohms? Yes
INSTALL a new
convertible top switch.
REFER to
Convertible Top Switch in this
section. TEST the
system for normal
operation.
No
REPAIR circuit 688
(GY/LB). TEST the
system for normal
operation. A7 CHECK THE BATTERY SUPPLY TO THE RELAYS
z
Measure the voltage between raise relay C4063 pin 87, circuit 170
(RD/LB), harness side and ground; and between lower relay
C4064 pin 87, circuit 170 (RD/LB), harness side and ground.
z Are the voltages greater than 10 volts? Yes
GO to
A8 .
No
REPAIR circuit 170
(RD/LB). TEST the
system for normal
operation. A8 CHECK CIRCUIT 1205 (BK) FOR AN OPEN
z
Key in OFF position.
z Measure the resistance between raise relay C4063 pin 87A,
circuit 1205 (BK), harness side and ground; and between lower
relay C4064 pin 87A, circuit 1205 (BK), harness side and ground. Yes
GO to
A9 .
No
REPAIR the circuit.
TEST the system for
normal operation. Klj . 4 ba
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