2003 FORD MUSTANG fuse diagram

relay Pin 5, Circuit 65 (DG), harness side and ground; and
between BJB wiper ON/OFF relay Pin 2, Circuit 65 (DG),
harness side and ground.
z Are the voltages greater than 10 volts? REPAIR circuit(s) in question.
REPEAT the self-
test.
CLEAR the DTCs. B11 ISOLATE PROBLEM BETWEEN GEM AND BJB
z
Key in OFF position.
z Connect a fused jumper wire (30A) between wiper
ON/OFF relay Pin 3 and Pin 5, harness side.
z Key in ON position.
z Did the wiper motor activate? Yes
GO to
B12 .
No
GO to B22 .
B12 CARRY OUT THE WIPER ON/OFF RELAY COMPONENT
TEST z
Check the wiper ON and OFF relay; refer to Wiring
Diagrams, Cell 149, Component Testing.
z Is the ON/OFF wiper relay OK? Yes
GO to
B13 .
No
INSTALL a new wiper
ON/OFF relay. REPEAT the
self- test. CLEAR the DTCs. B13 CHECK CIRCUIT 646 (YE/WH) FOR SHORT TO
BATTERY BETWEEN GEM AND BJB z
Disconnect: Wiper On/Off Relay.
z Disconnect: GEM C201d.
z Measure the voltage between GEM C201d 3 Pin 12,
Circuit 646 (YE/WH), harness side and ground. Yes
REPAIR Circuit 646
(YE/WH). REPEAT the self-
test. CLEAR the DTCs.
No
GO to
B14 . Klj . 10 ba
202003 Mustang Workshop Manual
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z
Connect a fused jumper wire (30A) between wiper
HIGH/LOW relay Pin 30, Circuit 61 (YE/RD), harness side
and Pin 87, Circuit 58 (WH), harness side.
z Did the wiper motor speed increase with the jumper
installed and slow down with the jumper removed? GO to
B18 .
No
GO to B26 .
B18 CARRY OUT COMPONENT TEST ON WIPER HIGH/LOW
RELAY z
Check the wiper HIGH/LOW relay; refer to Wiring
Diagrams, Cell 149, Component Testing.
z Is the wiper HIGH/LOW relay OK? Yes
GO to
B19 .
No
INSTALL a new wiper
HIGH/LOW relay. REPEAT
the self- test. CLEAR the
DTCs. B19 CHECK CIRCUIT 647 (GY/LB) FOR SHORT TO
BATTERY BETWEEN GEM AND BJB z
Disconnect: GEM C201d.
z Measure voltage between GEM C201d Pin 5, Circuit 647
(GY/LB), harness side and ground.
z Is the voltage greater than 10 volts? Yes
REPAIR Circuit 647 (GY/LB).
REPEAT the self-
test.
CLEAR the DTCs.
No
GO to B20 .
B20 CHECK CIRCUIT 647 (GY/LB) FOR SHORT TO GROUND
BETWEEN GEM AND BJB z
Measure the resistance between GEM C201d Pin 5,
Circuit 647 (GY/LB), harness side and ground. Yes
GO to
B21 .
No
REPAIR Circuit 647 (GY/LB).
REPEAT the self- test.
CLEAR the DTCs. Klj . 12 ba
202003 Mustang Workshop Manual
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test.
z Disconnect: Washer ON/OFF Relay.
z Measure the voltage between washer ON/OFF relay Pin 2, Circuit
65 (DG), harness side and ground; and washer ON/OFF relay Pin
3, Circuit 65 (DG), harness side and ground.
z Are the voltages greater than 10 volts? GO to
C5 .
No
REPAIR the circuit in
question. REPEAT
the self- test. CLEAR
the DTCs. C5 ISOLATE THE PROBLEM BETWEEN GEM AND BJB
z
Connect a fused jumper wire (30A) between washer ON/OFF
relay Pin 3, Circuit 65 (DG), harness side and Pin 5, Circuit 941
(BK/WH), harness side.
z Did the washer motor activate? Yes
GO to
C6 .
No
GO to C10 .
C6 CARRY OUT WASHER ON/OFF RELAY COMPONENT TEST
z
Check the washer ON/OFF relay; refer to Wiring Diagrams, Cell
149, Component Testing.
z Is the washer ON/OFF relay OK? Yes
GO to
C7 .
No
INSTALL a new wiper
ON/OFF relay.
REPEAT the self- test.
CLEAR the DTCs. C7 CHECK CIRCUIT 686 (TN/RD) FOR SHORT TO BATTERY
BETWEEN GEM AND BJB z
Disconnect: GEM C201d.
z Measure the voltage between GEM C201d Pin 6, Circuit 686
(TN/RD), harness side and ground. Yes
REPAIR Circuit 686
(TN/RD). REPEAT the
self-
test. CLEAR the
DTCs.
No
GO to C8 . Klj . 16 ba
202003 Mustang Workshop Manual
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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
102003 Mustang Workshop Manual
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