Ford F150 Pickup. Manual — part 309

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 - GENERAL

INFORMATION - F150 PICKUP .

B1485

Brake Pedal Input Circuit

Battery Short

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

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 .

B1840 Wiper Front Power Circuit

Failure

GEM/CTM

REFER to WIPERS AND WASHERS - F150 .

P0500

Vehicle Speed Sensor

Malfunction

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1804 Transmission 4-Wheel Drive

High Indicator Circuit Failure

GEM

REFER to INSTRUMENT CLUSTER-

CONVENTIONAL - F150 .

P1806 Transmission 4-Wheel Drive

High Indicator Short Circuit

to Battery

GEM

REFER to INSTRUMENT CLUSTER-

CONVENTIONAL - F150 .

P1812 Transmission 4-Wheel Drive

Mode Select Circuit Failure

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1815 Transmission 4-Wheel Drive

Mode Select Short Circuit to

Ground

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1820 Transmission Transfer Case

Clockwise Shift Relay Coil

Circuit Failure

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1822 Transmission Transfer Case

Clockwise Shift Relay Coil

Short Circuit to Battery

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1824 Transmission 4-Wheel Drive

Clutch Relay Circuit Failure

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1826 Transmission 4-Wheel Drive

Low Clutch Relay Short

Circuit to Battery

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1828 Transmission Transfer Case

Counter Clockwise Shift

Relay Coil Circuit Failure

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1830 Transmission Transfer Case

Counter Clockwise Shift

Relay Coil Short Circuit to

Battery

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1832 Transmission Transfer Case

Differential Lock-Up

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

2003 Ford Pickup F150

2003 STEERING Steering Column Switches - F150 Pickup

SYMPTOM CHART

Refer to the Wiring Diagrams for connector numbers stated in Pinpoint Tests.

SYMPTOM CHART

Solenoid Circuit Failure

P1834 Transmission Transfer Case

Differential Lock-Up

Solenoid Short Circuit to

Battery

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1838 Transmission Transfer Case

Shift Motor Circuit Failure

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1846 Transmission Transfer Case

Contact Plate 'A' Circuit

Failure

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1850 Transmission Transfer Case

Contact Plate 'B' Circuit

Failure

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1854 Transmission Transfer Case

Contact Plate 'C' Circuit

Failure

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1858 Transmission Transfer Case

Contact Plate 'D' Circuit

Failure

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1866 Transmission Transfer Case

System Concern - Servicing

Required

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1867 Transmission Transfer Case

Contact Plate General Circuit

Failure

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1876 Transmission Transfer Case

2-Wheel Drive Solenoid

Circuit Failure

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1877 Transmission Transfer Case

2-Wheel Drive Solenoid

Circuit Short to Battery

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

P1891 Transmission Transfer Case

Contact Plate Ground Return

Open Circuit

GEM

REFER to TRANSFER CASE - GENERAL

INFORMATION - F150 PICKUP .

Condition

Possible Sources

Action

No communication with the
generic electronic module
(GEM)

z

Central junction box
(CJB) fuse 15 (5A).

z

Battery junction box

Go To PINPOINT TEST A .

2003 Ford Pickup F150

2003 STEERING Steering Column Switches - F150 Pickup

PINPOINT TESTS

Pinpoint Test A: No Communication With The Generic Electronic Module Or Central Timer Module

(BJB) fuse 103 (50A).

z

Circuitry.

z

GEM.

Unable to enter self-test

z

Generic electronic
module (GEM).

Go To PINPOINT TEST B .

The ignition switch is
inoperative

z

Battery junction box
(BJB) fuse(s):

z

111 (50A).

z

113 (50A).

z

Ignition switch.

z

Circuitry.

Go To PINPOINT TEST C .

No power in ACC

z

Ignition switch.

z

Circuitry.

Go To PINPOINT TEST D .

No power in RUN

z

Battery junction box
(BJB) fuse(s):

z

102 (20A).

z

111 (50A).

z

113 (50A).

z

Ignition switch.

z

Circuitry.

Go To PINPOINT TEST E .

No power in START

z

Battery junction box
(BJB) fuse 111 (50A).

z

Ignition switch.

z

Circuitry.

Go To PINPOINT TEST F .

The multifunction switch and/or
hazard switch does not operate
correctly

z

Multifunction switch.

REFER to the Multifunction Switch

Component Test in COMPONENT

TESTING - F150 PICKUP .

2003 Ford Pickup F150

2003 STEERING Steering Column Switches - F150 Pickup

Fig. 5: Pinpoint Test A: No Communication With The Generic Electronic Module Or Central Timer
Module (Steps A1-A2)
Courtesy of FORD MOTOR CO.

2003 Ford Pickup F150

2003 STEERING Steering Column Switches - F150 Pickup