Ford F150 Pickup. Manual — part 271

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If the diagnostic tool still does not power up, refer to the diagnostic tool manual.

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