Ford F150 Pickup. Instruction - part 1952

Fig. 76: Identifying Special Tool(s) 
Courtesy of FORD MOTOR CO. 

Inspection & Verification 

1. Verify the customer concern by operating the 2H/4x4 engagement.  

2. Visually inspect for the following obvious signs of mechanical and electrical damage. 

 

2003 Ford Pickup F150 

2003 TRANSMISSIONS Transfer Case - General Information - F150 Pickup

  

Fig. 77: Visual Inspection Chart 
Courtesy of FORD MOTOR CO. 

3. If the concern remains after the inspection, connect the diagnostic tool to the Data Link Connector (DLC) 

located beneath the instrument panel and select the vehicle to be tested from the diagnostic tool menu. If 
the diagnostic tool does not communicate with the vehicle: 

z

check that the program card is correctly installed.  

z

check the connections to the vehicle.  

z

check the ignition switch position.  

4. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool instruction.  

5. Perform the DATA LINK DIAGNOSTIC TEST. If the diagnostic tool responds with: 

z

CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to MODULE 
COMMUNICATIONS NETWORK - F150 PICKUP .  

z

NO RESP/NOT EQUIP for GEM, go to PINPOINT TEST K .  

z

SYSTEM PASSED, retrieve and record the continuous Diagnostic Trouble Codes (DTCs), erase 
the continuous DTCs and perform self-test diagnostics for the GEM.  

6. If the DTCs retrieved are related to the concern, go to GEM DIAGNOSTIC TROUBLE CODE (DTC) 

INDEX to continue diagnostics.  

7. If no DTCs related to the concern are retrieved, proceed to SYMPTOM CHART to continue diagnostics. 

GEM/CTM DIAGNOSTIC TROUBLE CODE (DTC) INDEX 

GEM/CTM DIAGNOSTIC TROUBLE CODE (DTC) INDEX 

DTC

Description

Source

Action

 

2003 Ford Pickup F150 

2003 TRANSMISSIONS Transfer Case - General Information - F150 Pickup

  

B1302

Accessory Delay Relay Coil Circuit 

Failure

GEM

REFER to GLASS, FRAMES AND 

MECHANISMS - F150 .

B1304 Accessory Delay Relay Coil Circuit Short 

to Battery

GEM

REFER to GLASS, FRAMES AND 

MECHANISMS - F150 .

B1313 Battery Saver Relay Coil Circuit Failure

GEM/CTM

REFER to INTERIOR LIGHTING -

F150 .

B1315 Battery Saver Relay Coil Circuit Short to 

Battery

GEM/CTM

REFER to INTERIOR LIGHTING -

F150 .

B1317

Battery Voltage High

GEM/CTM

REFER to GENERATORS & 

REGULATORS - F150 PICKUP .

B1318

Battery Voltage Low

GEM/CTM

REFER to GENERATORS & 

REGULATORS - F150 PICKUP .

B1322 Driver Door Ajar Circuit Short to Ground GEM/CTM

REFER to INTERIOR LIGHTING -

F150 .

B1323

Door Ajar Lamp Circuit Failure

GEM/CTM REFER to INSTRUMENT CLUSTER-

CONVENTIONAL - F150 .

B1325 Door Ajar Lamp Circuit Short to Battery GEM/CTM REFER to INSTRUMENT CLUSTER-

CONVENTIONAL - F150 .

B1330

Passenger Door Ajar Circuit Short to 

Ground

GEM/CTM

REFER to INTERIOR LIGHTING -

F150 .

B1340

Chime Input Request Circuit Short to 

Ground

GEM/CTM

REFER to WARNING DEVICES -

F150 .

B1342

ECU Is Defective

GEM/CTM

REFER to MULTIFUNCTION 

ELECTRONIC MODULE - F150 .

B1352

Ignition Key-In Circuit Failure

GEM/CTM

REFER to WARNING DEVICES -

F150 .

B1355

Ignition Run Circuit Failure

GEM/CTM

REFER to STEERING COLUMN 

SWITCHES - F150 PICKUP .

B1359

Ignition Run/Acc Circuit Failure

GEM/CTM

REFER to STEERING COLUMN 

SWITCHES - F150 PICKUP .

B1365

Ignition Start Circuit Short to Battery

GEM/CTM

REFER to STEERING COLUMN 

SWITCHES - F150 PICKUP .

B1371

Illuminated Entry Relay Circuit Failure

GEM/CTM

REFER to INTERIOR LIGHTING -

F150 .

B1373 Illuminated Entry Relay Short to Battery GEM/CTM

REFER to INTERIOR LIGHTING -

F150 .

B1398

Driver Power Window One Touch 

Window Relay Circuit Failure

GEM

REFER to GLASS, FRAMES AND 

MECHANISMS - F150 .

B1400

Driver Power Window One Touch 

Window Relay Circuit Short to Battery

GEM

REFER to GLASS, FRAMES AND 

MECHANISMS - F150 .

B1405 Driver Power Window Down Circuit Short 

to Battery

GEM

REFER to GLASS, FRAMES AND 

MECHANISMS - F150 .

B1410

Driver Power Window Motor Circuit 

Failure

GEM

REFER to GLASS, FRAMES AND 

MECHANISMS - F150 .

 

2003 Ford Pickup F150 

2003 TRANSMISSIONS Transfer Case - General Information - F150 Pickup

  

B1426 Lamp Safety Belt Circuit Short to Battery GEM/CTM REFER to INSTRUMENT CLUSTER-

CONVENTIONAL - F150 .

B1428

Lamp Safety Belt Circuit Failure

GEM/CTM REFER to INSTRUMENT CLUSTER-

CONVENTIONAL - F150 .

B1431

Wiper Brake/Run Relay Circuit Failure

GEM/CTM

REFER to WIPERS AND WASHERS 

- F150 .

B1432 Wiper Brake/Run Relay Circuit Short to 

Battery

GEM/CTM

REFER to WIPERS AND WASHERS 

- F150 .

B1434 Wiper Hi/Low Speed Relay Coil Circuit 

Failure

GEM/CTM

REFER to WIPERS AND WASHERS 

- F150 .

B1436 Wiper Hi/Low Speed Relay Coil Circuit 

Short to Battery

GEM/CTM

REFER to WIPERS AND WASHERS 

- F150 .

B1438 Wiper Mode Select Switch Circuit Failure GEM/CTM

REFER to WIPERS AND WASHERS 

- F150 .

B1441 Wiper Mode Select Switch Circuit Short to 

Ground

GEM/CTM

REFER to WIPERS AND WASHERS 

- F150 .

B1446

Wiper Park Sense Circuit Failure

GEM/CTM

REFER to WIPERS AND WASHERS 

- F150 .

B1450 Wiper Wash/Delay Switch Circuit Failure GEM/CTM

REFER to WIPERS AND WASHERS 

- F150 .

B1453 Wiper Wash/Delay Switch Circuit Short to 

Ground

GEM/CTM

REFER to WIPERS AND WASHERS 

- F150 .

B1458 Wiper Washer Pump Motor Relay Circuit 

Failure

GEM/CTM

REFER to WIPERS AND WASHERS 

- F150 .

B1460

Wiper Washer Pump Motor Relay Coil 

Circuit Short to Battery

GEM/CTM

REFER to WIPERS AND WASHERS 

- F150 .

B1462

Safety Belt Switch Circuit Failure

GEM/CTM

REFER to WARNING DEVICES -

F150 .

B1466

Wiper Hi/Low Speed Not Switching

GEM/CTM

REFER to WIPERS AND WASHERS 

- F150 .

B1467 Wiper Hi/Low Speed Circuit Motor Short 

to Battery

CTM

REFER to WIPERS AND WASHERS 

- F150 .

B1473 Wiper Low Speed Circuit Motor Failure

GEM/CTM

REFER to WIPERS AND WASHERS 

- F150 .

B1476 Wiper High Speed Circuit Motor Failure GEM/CTM

REFER to WIPERS AND WASHERS 

- F150 .

B1483

Brake Pedal Input Circuit Failure

GEM

REFER to TRANSFER CASE -

ESOF .

B1485

Brake Pedal Input Circuit Battery Short

GEM

REFER to TRANSFER CASE -

ESOF .

B1577 Lamp Park Input Circuit Short to Battery GEM/CTM

REFER to WARNING DEVICES -

F150 .

B1610

Illuminated Entry Input Short Circuit to 

Ground

GEM

REFER to INTERIOR LIGHTING -

F150 .

 

2003 Ford Pickup F150 

2003 TRANSMISSIONS Transfer Case - General Information - F150 Pickup