Ford F150 Pickup. Instruction — part 271
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If the diagnostic tool still does not power up, refer to the diagnostic tool instruction.
5. Carry out the DATA LINK DIAGNOSTICS test. If the diagnostic tool responds with:
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SCP+, SCP-, or UBP circuits fault = ALL ECUS NO RESP/NOT EQUIP, refer to MODULE
COMMUNICATIONS NETWORK - F150 .
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NO RESP/NOT EQUIP for GEM, refer to ANTI-THEFT - PATS - F150 .
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SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the
continuous DTCs, and carry out the self-test diagnostics for the GEM.
6. If the DTCs retrieved are related to the concern, go to the GEM Diagnostic Trouble Code (DTC) Index to
continue diagnostics.
7. If no DTCs related to the concern are retrieved, GO to Symptom Chart to continue diagnostics.
8. If DTCs are not present in GEM Diagnostic Trouble Code (DTC) Index, refer to INSTRUMENT
CLUSTER DIAGNOSTIC TROUBLE CODE (DTC) .
GEM Diagnostic Trouble Code (DTC) Index
GEM DIAGNOSTIC TROUBLE CODE (DTC) INDEX
Symptom Chart
SYMPTOM CHART
DTC
Description
Source
Action
B1302
Accessory Delay Relay Coil
Circuit Failure (Only Set if
Battery Saver Relay Has No
Faults)
GEM
Go To PINPOINT TEST B .
B1304
Accessory Delay Relay Coil
Circuit Short to Battery
GEM
Go To PINPOINT TEST B .
B1342 ECU Is Defective, RAM/ROM
Check Sum Failure
GEM
CLEAR the DTCs. RETRIEVE the DTCs. If DTC
B1342 is retrieved, INSTALL a new GEM. REFER to
MULTIFUNCTION ELECTRONIC MODULE -
F150 .
B1398
LF One-Touch Down Power
Window Relay Coil Circuit
Failure
GEM
Go To PINPOINT TEST C .
B1400
LF One-Touch Down Power
Window Relay Coil Circuit
Short to Battery
GEM
Go To PINPOINT TEST C .
B1405
LF Power Window Switch
Down Circuit Short to Battery
GEM
Go To PINPOINT TEST C .
B1408 LF Power Window Switch Up
Circuit Short to Power
GEM
Go To PINPOINT TEST C .
B1410
LF Power Window Motor
Excessive Current Draw
GEM
Go To PINPOINT TEST C .
2003 Ford Pickup F150
2003 ACCESSORIES AND EQUIPMENT Glass, Frames and Mechanisms - F150 Pickup
Condition
Possible Sources
Action
No communication with the
generic electronic module
(GEM)
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Central junction box (CJB)
Fuse 6 (5A), 8 (5A), 15 (5A),
and 20 (5A).
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Circuitry.
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GEM.
REFER to MODULE
COMMUNICATIONS
NETWORK - F150 .
The power sliding window is
inoperative
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Fuse.
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Circuitry.
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Rear window motor.
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Rear window adjust switch.
Go To PINPOINT TEST A .
All power windows are
inoperative
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Central junction box (CJB)
Fuse 6 (5A), 8 (5A), 15 (5A),
and 20 (5A).
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Battery junction box (BJB)
Fuse 103 (50A), and 110
(30A), and 601 (30A).
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Circuitry.
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Battery saver relay.
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CJB.
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BJB.
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Accessory delay relay.
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Driver window control
switch (14529).
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Generic electronic module
(GEM).
Go To PINPOINT TEST B .
A single power window is
inoperative
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Circuitry.
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Central junction box (CJB).
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One-touch down relay.
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Window control switch.
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Window regulator motor.
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Generic electronic module
(GEM).
Go To PINPOINT TEST C .
The one-touch down feature
is inoperative
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Circuitry.
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Battery saver relay.
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One-touch down relay.
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Driver window control
switch.
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Driver window regulator
motor.
Go To PINPOINT TEST D .
2003 Ford Pickup F150
2003 ACCESSORIES AND EQUIPMENT Glass, Frames and Mechanisms - F150 Pickup
Pinpoint Tests
PINPOINT TEST A: POWER SLIDING WINDOW IS INOPERATIVE
Fig. 6: Pinpoint Test A: Power Sliding Window Is Inoperative (A1)
Courtesy of FORD MOTOR CO.
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Central junction box (CJB).
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Generic electronic module
(GEM).
The defrost system is
inoperative
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Circuitry.
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EATC module.
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Rear window defrost grid.
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Rear window defrost relay.
Go To PINPOINT TEST E .
The defrost system will not
shut off automatically
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Circuitry.
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EATC module.
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Rear window defrost relay.
Go To PINPOINT TEST F .
2003 Ford Pickup F150
2003 ACCESSORIES AND EQUIPMENT Glass, Frames and Mechanisms - F150 Pickup
Fig. 7: Pinpoint Test A: Power Sliding Window Is Inoperative (A1 Cont. - A3)
Courtesy of FORD MOTOR CO.
2003 Ford Pickup F150
2003 ACCESSORIES AND EQUIPMENT Glass, Frames and Mechanisms - F150 Pickup
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