2003 FORD MUSTANG fuse

Symptom Chart B2139 PCM ID Does Not Match Between Instrument Cluster and
PCM ICM GO to
Pinpoint Test J .
B2141 NVM Configuration Failure (No PCM ID Exchange
Between Instrument Cluster and PCM) ICM GO to
Pinpoint Test K .
B2143 NVM Memory Failure ICM REFER to
Section 413
- 01
C1284 Oil Pressure Switch Failure ICM REFER to
Section 413
- 01 .
U1147 SCP Invalid or Missing Data for Vehicle Security PCM/SCP GO to
Pinpoint Test C .
U1262 Missing SCP Message J1850 REFER to
Section 418
- 00 .
Symptom Chart Condition
Possible Sources Action
z No communication
with the instrument
cluster z
Central junction box
Fuses:
„5 (15A)
„ 21 (5A)
„ 34 (20A)
z Circuitry
z Instrument cluster z
GO to Pinpoint Test A .
z The anti- theft
indicator is
always/never on —
no three second
theft indicator prove
out z
Instrument cluster
z Theft indicator z
GO to Pinpoint Test B .
z The vehicle does not
start — theft
indicator proves out
for three seconds as
normal z
Less than two keys
programmed to the
system
z Transceiver not
connected/defective
z Circuitry
z Transceiver internal
antenna damaged
z NON- PATS key,
damaged key or no
code received
z Partial key read of
PATS key
z Unprogrammed
PATS key z
CARRY OUT Instrument
Cluster On- Demand
Self- Test. RETRIEVE
DTCs. If DTCs are
present, GO to
Instrument Cluster
Diagnostics Trouble
Code (DTC) Index. If no
DTCs are retrieved,
CHECK for other
possible no- start
causes.
z No PCM ID stored in
PATS
z PATS/PCM ID do not
match
z Problem with SCP
link z
CLEAR the stored
DTCs. CYCLE the
ignition key from OFF to
RUN. RETRIEVE
continuous DTCs. If
DTCs are present, GO
to Instrument Cluster
Diagnostics Trouble
Code (DTC) Index. If no Klj . 3 ba
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DIAGNOSIS AND TESTING
Rear View Mirrors
Refer to Wiring Diagrams Cell
124 , Power Mirrors for schematic and connector information.
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.
Symptom Chart
Refer to the Wiring Diagrams for connector numbers stated in the pinpoint tests. SECTION 501-
09: Rear View Mirrors 2003 Mustang Workshop Manual Special Tool(s)
73III Automotive Meter
105-
R0057 or equivalent Flex Probe Kit
105-
R025B or equivalent
Visual Inspection Chart Mechanical Electrical
z
Exterior rear view mirrors
z Interior rear view mirror z
Central junction box (CJB) fuse 19 (15A)
z Wiring harness
z Connections
z Exterior rear view mirror control
z Exterior rear view mirror motor
SYMPTOM CHART Condition
Possible Sources Action
z The mirrors are inoperative zExterior rear view
mirror control. z
Go To Pinpoint Test A . Klj . 1 ba
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Pinpoint Tests
PINPOINT TEST A: THE MIRRORS ARE INOPERATIVE z
Central junction box
(CJB) fuse 19 (15A).
z Circuitry.
z A single mirror is inoperative zExterior rear view
mirror control.
z Exterior rear view
mirror motor.
z Circuitry. z
Go To Pinpoint Test B .
z A single mirror does not
function with switch logic z
Exterior rear view
mirror control.
z Exterior rear view
mirror motor.
z Circuitry. z
Go To Pinpoint Test C .
Test Step Result / Action to
Take A1 CHECK CIRCUIT 326 (WH/VT)
z
Disconnect: Exterior Rear View Mirror Control C527.
z Measure the voltage between exterior rear view mirror control
C527 pin 1, circuit 326 (WH/VT), harness side and ground.
z Is the voltage greater than 10 volts? Yes
GO to
A2 .
No
REPAIR the circuit.
TEST the system for
normal operation. A2 CHECK CIRCUIT 1205 (BK) FOR AN OPEN
z
Measure the resistance between exterior rear view mirror control
C527 pin 5, circuit 1205 (BK), harness side and ground.
z Is the resistance less than 5 ohms? Yes
GO to
A3 .
No
REPAIR the circuit.
TEST the system for
normal operation. A3 CHECK CIRCUIT 542 (YE) FOR AN OPEN Klj . 2 ba
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DIAGNOSIS AND TESTING
Seats
Refer to Wiring Diagrams Cell
120 , Power Seats for schematic and connector information.
Refer to Wiring Diagrams Cell 122 , Power Lumbar Seats for schematic and connector information.
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. GO to Symptom Chart .
Symptom Chart
Refer to the Wiring Diagram manual for the connector numbers cited in the pinpoint tests. SECTION 501-
10: Seating 2003 Mustang Workshop Manual Special Tool(s)
73 III Automotive Meter
105-
R0057
Visual Inspection Chart Mechanical Electrical
z
Front seat track.
z Seat at limit(s) of travel. z
Battery junction box (BJB) Fuse Power Seat (25A).
z Loose, corroded or damaged connectors.
z Seat regulator control switch.
z Lumbar seat control switch.
z Lumbar motor.
z Bolster and lumbar control switches (cobra)
SYMPTOM CHART Condition
Possible Sources Action
z The power seat is
inoperative z
BJB Fuse Power Seat
(25A).
z Seat regulator control
switch.
z Circuitry. z
Go To Pinpoint Test
A . Klj . 1 ba
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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 diagnostic tool does not communicate with the vehicle, refer to the diagnostic tool manual.
5. Carry out the DATA LINK DIAGNOSTIC TEST. If the diagnostic tool responds with: zCKT 914, CKT 915 or CKT70 - ALL ECUS NO RESP/NOT EQUIP, refer to Section 418 -
00 .
z NO RESP/NOT EQUIP for the generic electronic module (GEM), go to Pinpoint Test A.
z NO RESP/NOT EQUIP for the instrument cluster module (ICM), refer to Section 413 - 01 .
z System passed, retrieve and record the continuous diagnostic trouble codes (DTCs),
erase the continuous DTCs and carry out self- test diagnostics for the GEM or ICM.
6. If the GEM or ICM DTCs retrieved are related to the concern, go to the GEM or ICM Diagnostic Trouble Code (DTC) Index.
7. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics.
GEM DIAGNOSTIC TROUBLE CODE (DTC) INDEX Visual Inspection Chart Mechanical Electrical
z
Power window
regulator
z Window run
weatherstrip
z Door window glass z
Central junction box (CJB) circuit breaker 43 (20A), fuse 39
(5A) or 23 (15A)
z Battery junction box (BJB) fuse HTD BL (40A)
z Generic electronic module (GEM)
z Window regulator control switch
z Window regulator motor
z Instrument cluster module (ICM)
z Heated rear window relay
z Rear window defrost switch
z Heated rear window grid
z Circuitry DTC Description Source Action
B1217 Horn Relay Output Driver
Circuit Failure GEM GO to
Section 501 - 14B .
B1218 Horn Relay Output Driver
Short to Battery GEM GO to
Section 501 - 14B .
B1312 Lamp Headlamp Input Circuit GEM GO to
Section 413 - 09 . Klj . 2 ba
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Symptom Chart
Refer to the Wiring Diagrams for the connector numbers stated in pinpoint tests.
Symptom Chart Condition
Possible Sources Action
z No communication with the
generic electronic module
(GEM) z
Central junction box
(CJB) fuse 39 (5A).
z GEM.
z Circuitry. z
GO to Pinpoint Test A .
z All power windows are
inoperative — convertible z
Circuitry.
z CJB circuit breaker
43 (20A).
z Window regulator
control switch. z
GO to Pinpoint Test B .
z All power windows are
inoperative — coupe z
Circuitry.
z CJB circuit breaker
43 (20A).
z Window regulator
control switch. z
GO to Pinpoint Test C .
z A single power window is
inoperative — driver,
convertible z
Circuitry.
z CJB fuse 43 (20A).
z Ignition switch.
z Window regulator
motor.
z Window regulator
control switch.
z GEM. z
GO to Pinpoint Test D .
z A single power window is
inoperative — driver, coupe z
Circuitry.
z CJB fuse 43 (20A).
z Ignition switch.
z Window regulator
motor.
z Window regulator
control switch.
z GEM. z
GO to Pinpoint Test E .
z The one- touch down feature
is inoperative z
Circuitry.
z CJB fuse 43 (20A).
z Ignition switch.
z Window regulator
motor.
z Window regulator
control switch.
z GEM. z
For convertible,
GO to Pinpoint Test D .
z For coupe, GO to
Pinpoint Test E .
z A single power window is
inoperative — passenger z
Circuitry.
z Driver window
regulator control
switch.
z Window regulator
motor.
z Passenger window
regulator control
switch. z
GO to Pinpoint Test F .
z A single power window is zCircuitry. zGO to Pinpoint Klj . 5 ba
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Pinpoint Tests
PINPOINT TEST A: NO COMMUNICATION WITH THE GENERIC
ELECTRONIC MODULE (GEM) inoperative —
rear,
convertible only z
Window regulator
motor.
z Driver window
regulator control
switch. Test G .
z The defrost system is
inoperative z
BJB fuse HTD BL
(30A).
z CJB fuse 23 (15A).
z Circuitry.
z Instrument cluster
module (ICM).
z Rear window
defrost switch.
z Heated rear
window grid. z
GO to Pinpoint Test H .
z The defrost system will not
shut off automatically z
Circuit.
z ICM.
z Rear window
defrost switch. z
GO to Pinpoint Test I .
Test Step Result / Action to Take
CAUTION: Use the correct probe adapter(s) when making measurements. Failure to
use the correct probe adapter(s) may damage the connector. A1 CHECK THE GENERIC ELECTRONIC MODULE (GEM)
POWER SUPPLY z
Key in OFF position.
z Disconnect: Generic Electronic Module (GEM) C201a.
z Disconnect: GEM C201b.
z Key in ON position.
z Using the following table, measure the voltage between the
GEM, harness side and ground.
z Are the voltages greater than 10 volts? Connector Pin Circuit
C201a 4 400 (LB/BK)
C201a 1 1006 (DG/WH)
C201b 2 1001 (WH/YE)
C201b 3 193 (YE/LG) Yes
GO to
A2 .
No
REPAIR the circuit(s) in
question. TEST the system
for normal operation. A2 CHECK THE GEM GROUND CIRCUIT 397 (BK/WH) FOR
OPEN z
Key in OFF position.
z Measure the resistance between the GEM C201b pin 4,
circuit 397 (BK/WH), harness side and ground. Yes
GO to
A3 .
No Klj . 6 ba
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z
Is the resistance less than 5 ohms? D9 CHECK THE GEM CONTROL OF THE DRIVER POWER
WINDOW z
Key in ON position.
z Enter the following diagnostic mode on the diagnostic tool:
GEM Active Command FRONT WINDOW CONTROL.
z Trigger DR DOWN ON.
z Did the driver window move down? Yes
INSTALL a new GEM.
REFER to
Section 419 -
10 . TEST the system for
normal operation.
No
GO to D10 .
D10 CHECK THE WINDOW REGULATOR MOTOR OPERATION
z
Disconnect: Driver Window Regulator Motor C518.
z Connect a 20 amp fused jumper wire between battery positive
and one pin of the window regulator motor (component side).
z Momentarily connect a jumper wire between second pin of the
window regulator motor and ground.
z Reverse the jumper wires on the window regulator motor.
z Did the window regulator motor operate in both
directions? Yes
GO to
D11 .
No
INSTALL a new window
regulator motor. REFER
to Motor — Window
Regulator in this section.
TEST the system for
normal operation. D11 CHECK CIRCUIT 992 (WH/BK) FOR AN OPEN BETWEEN
THE DRIVER WINDOW MOTOR AND THE WINDOW
REGULATOR CONTROL SWITCH z
Disconnect: Driver Window Regulator Control Switch C537.
z Measure the resistance between driver window regulator
control switch C537 pin 6, circuit 992 (WH/BK), harness side
and driver window regulator motor C518, circuit 992 (WH/BK),
harness side. Yes
GO to
D12 .
No
REPAIR the circuit. TEST
the system for normal
operation. Klj . 12 ba
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